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Bridge Statistics for Big Rock, Illinois (IL)
Condition, Traffic, Stress, Structural Evaluation, Project Costs


  • National Bridge Inventory (NBI) Statistics
  • 21Number of bridges
  • 164ft / 50.0mTotal length
  • $842,000Total costs
  • 86,525Total average daily traffic
  • 15,114Total average daily truck traffic
  • 129,491Total future (year 2032) average daily traffic
  • National Bridge Inventory (NBI) Registered Bridges for Big Rock
  • No street view available for this location

New bridges in Big Rock, IL - historical statistics
  • New bridges - historical statistics
  • 11920-1929
  • 11930-1939
  • 11950-1959
  • 31960-1969
  • 91970-1979
  • 31980-1989
  • 11990-1999
  • 12000-2009
  • 12010-2019
Reconstructed bridges in Big Rock, IL - Historical Statistics
  • Reconstructed bridges - Historical Statistics
  • 11960-1969
  • 11970-1979
  • 01980-1989
  • 01990-1999
  • 32000-2009
  • 12010-2019
Average Bridge Daily Traffic in Big Rock, IL
Average Bridge Truck Traffic in Big Rock, IL
Bridge Condition - Deck
  • Bridge Condition - Deck
  • 21.1%Very good
  • 21.1%Good
  • 26.3%Satisfactory
  • 21.1%Fair
  • 5.3%Poor
  • 5.3%Serious
Bridge Condition - Superstructure
  • Bridge Condition - Superstructure
  • 21.1%Very good
  • 26.3%Good
  • 21.1%Satisfactory
  • 21.1%Fair
  • 10.5%Serious
Bridge Condition - Substructure
  • Bridge Condition - Substructure
  • 5.3%Very good
  • 47.4%Good
  • 31.6%Satisfactory
  • 15.8%Fair
Bridge Condition - Channel
  • Bridge Condition - Channel
  • 9.5%Very good
  • 28.6%Good
  • 52.4%Satisfactory
  • 4.8%Fair
  • 4.8%Poor
Bridge Condition - Culverts
  • Bridge Condition - Culverts
  • 50.0%Good
  • 50.0%Fair
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Structure Number: 450034,  Location: 3.2 M W OF IL 47 (Lat: 41.764111,  Lng: -88.515583),  Route carried "on" structure: US 30,  Year Built: 1927,  Year Reconstructed: 1967,  Status: Open,  Structure Length: 1.57m (5.15ft),  Average Daily Traffic: 5,100 (year 2021),  Truck Traffic: 16%,  Average Future Daily Traffic: 13,207 (year 2032),  Design Load: HS 20,  Features Intersected: WELCH CREEK
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 142.809,  Lanes on structure: 2,  Base Highway Network: Yes,  Owner: State Highway Agency,  Approaching Roadway Width: 8.5m (27.9ft),  Skew: 1 degrees,  Material/Design: Concrete continuous,  Design/Construction: Slab,  Number Of Spans In Main Unit: 2,  Length of Maximum Span: 7.5m (24.6ft),  Curb-To-Curb Width: 13.4m (44.0ft),  Out-to-Out Width: 14.2m (46.6ft)

Condition: Deck: Satisfactory,  Superstructure: Satisfactory,  Substructure: Fair,  Channel: Poor,  Operating Rating: 58.3 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Inventory Rating: 35.0 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Structural Evaluation: Somewhat better than minimum adequacy,  Deck Geometry: Equal to present minimum criteria,  Waterway Adequacy: Equal to present minimum criteria,  Approach Roadway Alignment: Equal to present minimum criteria,  Designated Inspection Frequency: Every 24 months,  Other Special Inspection Frequency: Every 12 months,  Inspection Date: October 2021,  Other Special Inspection Date: October 2021,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Latex Concrete
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Structure Number: 452005,  Location: .6 E OF DEKALB CO L (Lat: 41.767394,  Lng: -88.590969),  Route carried "on" structure: US 30,  Year Built: 1984,  Status: Open,  Structure Length: 4.96m (16.27ft),  Average Daily Traffic: 4,900 (year 2021),  Truck Traffic: 12%,  Average Future Daily Traffic: 6,890 (year 2032),  Design Load: HS 20,  Features Intersected: W BR BIG ROCK CREEK
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 136.678,  Lanes on structure: 2,  Base Highway Network: Yes,  Owner: State Highway Agency,  Approaching Roadway Width: 7.3m (24.0ft),  Skew: 4 degrees,  Material/Design: Prestressed concrete continuous,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 15.4m (50.5ft),  Curb-To-Curb Width: 12.2m (40.0ft),  Out-to-Out Width: 13.2m (43.3ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Good,  Channel: Satisfactory,  Operating Rating: 65.8 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Inventory Rating: 38.9 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Structural Evaluation: Better than present minimum criteria,  Deck Geometry: Equal to present minimum criteria,  Waterway Adequacy: Better than present minimum criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 48 months,  Other Special Inspection Frequency: Every 24 months,  Inspection Date: May 2021,  Other Special Inspection Date: May 2021,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Latex Concrete,  Deck Protection: Epoxy Coated Reinforcing
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Structure Number: 452006,  Location: 1.7M E OF KANE-DEK L (Lat: 41.767728,  Lng: -88.569911),  Route carried "on" structure: US 30,  Year Built: 1984,  Status: Open,  Structure Length: 3.90m (12.80ft),  Average Daily Traffic: 5,350 (year 2021),  Truck Traffic: 13%,  Average Future Daily Traffic: 7,082 (year 2032),  Design Load: HS 20,  Features Intersected: E BR BIG ROCK CREEK
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 138.432,  Lanes on structure: 2,  Base Highway Network: Yes,  Owner: State Highway Agency,  Approaching Roadway Width: 7.9m (25.9ft),  Skew: 2 degrees,  Material/Design: Prestressed concrete continuous,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 12.6m (41.3ft),  Curb-To-Curb Width: 12.2m (40.0ft),  Out-to-Out Width: 13.2m (43.3ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Good,  Channel: Satisfactory,  Operating Rating: 64.5 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Inventory Rating: 38.9 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Structural Evaluation: Better than present minimum criteria,  Deck Geometry: Somewhat better than minimum adequacy,  Waterway Adequacy: Better than present minimum criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Length Of Structure Improvement: 3.90m (12.80ft),  Designated Inspection Frequency: Every 48 months,  Inspection Date: June 2019,  Bridge Improvement Cost: $398,000,  Roadway Improvement Cost: $40,000,  Total Project Cost: $597,000,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Latex Concrete,  Deck Protection: Epoxy Coated Reinforcing
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Structure Number: 452021,  Location: .5 MI W. OF ILL 47 (Lat: 41.827725,  Lng: -88.479311),  Route carried "on" structure: Interstate 88,  Year Built: 1972,  Status: Open,  Structure Length: 0.69m (2.26ft),  Average Daily Traffic: 23,100 (year 2020),  Truck Traffic: 22%,  Average Future Daily Traffic: 36,621 (year 2032),  Design Load: HS 20,  Features Intersected: STREAM
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 174.046,  Lanes on structure: 4,  Base Highway Network: Yes,  Toll: On toll road,  Owner: State Toll Authority,  Approaching Roadway Width: 39.6m (129.9ft),  Skew: 1 degrees,  Material/Design: Concrete continuous,  Design/Construction: Culvert,  Number Of Spans In Main Unit: 2,  Length of Maximum Span: 3.0m (9.8ft)

Condition: Channel: Satisfactory,  Culverts: Good,  Operating Rating: 73.9 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Inventory Rating: 44.1 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Structural Evaluation: Better than present minimum criteria,  Waterway Adequacy: Equal to present desirable criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: July 2019,  Deck Structure Type: Concrete Cast-file-Place
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Structure Number: 453004,  Location: 0.5M. E. COUNT LINE (Lat: 41.821381,  Lng: -88.585342),  Route carried "on" structure: County highway ,  Year Built: 1966,  Year Reconstructed: 2006,  Status: Open,  Structure Length: 1.40m (4.59ft),  Average Daily Traffic: 1,000 (year 2018),  Truck Traffic: 17%,  Average Future Daily Traffic: 1,021 (year 2032),  Design Load: HS 20,  Features Intersected: BIG ROCK CREEK,  Facility Carried by Structure: MAIN STREET
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 2.189,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 7.9m (25.9ft),  Skew: 1 degrees,  Material/Design: Prestressed concrete,  Design/Construction: Box Beam or Girders - Multiple,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 13.7m (44.9ft),  Curb-To-Curb Width: 9.1m (29.9ft),  Out-to-Out Width: 9.1m (29.9ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Satisfactory,  Channel: Satisfactory,  Operating Rating: 44.1 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Inventory Rating: 32.4 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Structural Evaluation: Equal to present minimum criteria,  Deck Geometry: Equal to present minimum criteria,  Waterway Adequacy: Equal to present desirable criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: January 2020,  Deck Structure Type: Concrete Precast Panels,  Wearing Surface/Protective System: Wearing Surface: Integral Concrete,  Deck Protection: Epoxy Coated Reinforcing
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Structure Number: 453009,  Location: 4.0 MI SW SUGARGROVE (Lat: 41.733339,  Lng: -88.507831),  Route carried "on" structure: County highway ,  Year Built: 1934,  Year Reconstructed: 1981,  Status: Open,  Structure Length: 2.36m (7.74ft),  Average Daily Traffic: 2,450 (year 2018),  Truck Traffic: 4%,  Average Future Daily Traffic: 2,552 (year 2032),  Design Load: HS 20+Mod,  Features Intersected: BIG ROCK CREEK,  Facility Carried by Structure: JERICHO RD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 3.540,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 9.1m (29.9ft),  Material/Design: Prestressed concrete,  Design/Construction: Box Beam or Girders - Multiple,  Number Of Spans In Main Unit: 1,  Number Of Approach Spans: 2,  Length of Maximum Span: 23.1m (75.8ft),  Curb-To-Curb Width: 11.9m (39.0ft),  Out-to-Out Width: 11.9m (39.0ft)

Condition: Deck: Fair,  Superstructure: Fair,  Substructure: Fair,  Channel: Fair,  Operating Rating: 41.5 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Inventory Rating: 24.6 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Structural Evaluation: Somewhat better than minimum adequacy,  Deck Geometry: Somewhat better than minimum adequacy,  Waterway Adequacy: Better than present minimum criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: August 2021,  Deck Structure Type: Concrete Precast Panels,  Wearing Surface/Protective System: Wearing Surface: Integral Concrete,  Deck Protection: Epoxy Coated Reinforcing
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Structure Number: 453067,  Location: 2.0 MI NW BIG ROCK (Lat: 41.779992,  Lng: -88.589658),  Route carried "on" structure: County highway ,  Year Built: 1960,  Status: Posted for load,  Structure Length: 2.20m (7.22ft),  Average Daily Traffic: 100 (year 2018),  Truck Traffic: 13%,  Average Future Daily Traffic: 128 (year 2032),  Design Load: HS 15,  Features Intersected: Big Rock Creek,  Facility Carried by Structure: TR-173 (Scott Road
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 1.046,  Lanes on structure: 2,  Owner: Town or Township Highway Agency,  Approaching Roadway Width: 5.5m (18.0ft),  Material/Design: Concrete continuous,  Design/Construction: Slab,  Number Of Spans In Main Unit: 2,  Length of Maximum Span: 10.7m (35.1ft),  Curb-To-Curb Width: 7.3m (24.0ft),  Out-to-Out Width: 8.6m (28.2ft)

Condition: Deck: Fair,  Superstructure: Fair,  Substructure: Good,  Channel: Good,  Operating Rating: 35.0 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Inventory Rating: 20.7 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Structural Evaluation: Somewhat better than minimum adequacy,  Deck Geometry: Equal to present minimum criteria,  Waterway Adequacy: Equal to present desirable criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Bridge Posting: Required (Relationship of Operating Rating to Maximum Legal Load: 20.0 - 29.9% below),  Designated Inspection Frequency: Every 24 months,  Inspection Date: April 2021,  Deck Structure Type: Concrete Cast-file-Place
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Structure Number: 453084,  Location: 2 MI E BIG ROCK (Lat: 41.759950,  Lng: -88.511406),  Route carried "on" structure: Other road ,  Year Built: 1959,  Status: Open,  Structure Length: 1.83m (6.00ft),  Average Daily Traffic: 5,300 (year 2018),  Truck Traffic: 5%,  Average Future Daily Traffic: 7,528 (year 2032),  Design Load: HS 15,  Features Intersected: WELCH CREEK,  Facility Carried by Structure: GRANART ROAD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 1.432,  Lanes on structure: 2,  Base Highway Network: Yes,  Owner: City or Municipal Highway Agency,  Approaching Roadway Width: 7.0m (23.0ft),  Material/Design: Concrete continuous,  Design/Construction: Slab,  Number Of Spans In Main Unit: 2,  Length of Maximum Span: 9.1m (29.9ft),  Curb-To-Curb Width: 7.3m (24.0ft),  Out-to-Out Width: 7.9m (25.9ft)

Condition: Deck: Fair,  Superstructure: Fair,  Substructure: Good,  Channel: Satisfactory,  Operating Rating: 43.7 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Inventory Rating: 26.2 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Structural Evaluation: Somewhat better than minimum adequacy,  Deck Geometry: High priority of replacement,  Waterway Adequacy: Equal to present desirable criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Length Of Structure Improvement: 2.56m (8.40ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: May 2021,  Bridge Improvement Cost: $163,000,  Roadway Improvement Cost: $16,000,  Total Project Cost: $245,000,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Gravel
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Structure Number: 453103,  Location: 0.2 MI W DAUBERMN RD (Lat: 41.778950,  Lng: -88.532350),  Route carried "on" structure: City street ,  Year Built: 1974,  Status: Open,  Structure Length: 1.03m (3.38ft),  Average Daily Traffic: 200 (year 2018),  Truck Traffic: 15%,  Average Future Daily Traffic: 160 (year 2032),  Design Load: HS 20,  Features Intersected: WELCH CREEK,  Facility Carried by Structure: WHEELER ROAD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.032,  Lanes on structure: 2,  Owner: City or Municipal Highway Agency,  Approaching Roadway Width: 6.1m (20.0ft),  Material/Design: Concrete,  Design/Construction: Channel Beam,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 10.1m (33.1ft),  Curb-To-Curb Width: 8.0m (26.2ft),  Out-to-Out Width: 8.0m (26.2ft)

Condition: Deck: Satisfactory,  Superstructure: Serious,  Substructure: Fair,  Channel: Satisfactory,  Operating Rating: 45.4 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Inventory Rating: 27.2 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Structural Evaluation: High priority of corrective action,  Deck Geometry: Somewhat better than minimum adequacy,  Waterway Adequacy: Better than present minimum criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: May 2021,  Deck Structure Type: Concrete Precast Panels,  Wearing Surface/Protective System: Wearing Surface: Gravel
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Structure Number: 453104,  Location: 0.1 MI E. Jericho Rd (Lat: 41.764339,  Lng: -88.589439),  Route carried "on" structure: County highway ,  Year Built: 1975,  Year Reconstructed: 2012,  Status: Open,  Structure Length: 2.12m (6.96ft),  Average Daily Traffic: 350 (year 2018),  Truck Traffic: 9%,  Average Future Daily Traffic: 287 (year 2032),  Design Load: HS 25 or greater,  Features Intersected: W BRANCH BIG ROCK CR,  Facility Carried by Structure: HINCKLEY ROAD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.177,  Lanes on structure: 2,  Owner: Town or Township Highway Agency,  Approaching Roadway Width: 6.1m (20.0ft),  Skew: 1 degrees,  Material/Design: Concrete continuous,  Design/Construction: Slab,  Number Of Spans In Main Unit: 2,  Length of Maximum Span: 10.3m (33.8ft),  Curb-To-Curb Width: 8.2m (26.9ft),  Out-to-Out Width: 8.2m (26.9ft)

Condition: Deck: Very good,  Superstructure: Very good,  Substructure: Good,  Channel: Very good,  Operating Rating: 47.3 metric tons,  Method Used To Determine Operating Rating: Load and Resistance Factor Rating (LRFR) rating reported by rating factor(RF) method using HL-93 loadings,  Inventory Rating: 36.6 metric tons,  Method Used To Determine Inventory Rating: Load and Resistance Factor Rating (LRFR) rating reported by rating factor(RF) method using HL-93 loadings,  Structural Evaluation: Better than present minimum criteria,  Deck Geometry: Somewhat better than minimum adequacy,  Waterway Adequacy: Equal to present desirable criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 48 months,  Inspection Date: April 2018,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Gravel,  Deck Protection: Epoxy Coated Reinforcing
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Structure Number: 453105,  Location: 0.5 MI W BIG ROCK (Lat: 41.763928,  Lng: -88.561381),  Route carried "on" structure: County highway ,  Year Built: 1976,  Status: Posted for load,  Structure Length: 2.75m (9.02ft),  Average Daily Traffic: 350 (year 2018),  Truck Traffic: 9%,  Average Future Daily Traffic: 287 (year 2032),  Design Load: HS 20,  Features Intersected: E BRANCH BIG ROCK CR,  Facility Carried by Structure: HINCKLEY ROAD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 2.655,  Lanes on structure: 2,  Owner: City or Municipal Highway Agency,  Approaching Roadway Width: 6.7m (22.0ft),  Skew: 3 degrees,  Material/Design: Prestressed concrete,  Design/Construction: Box Beam or Girders - Multiple,  Number Of Spans In Main Unit: 2,  Length of Maximum Span: 13.3m (43.6ft),  Curb-To-Curb Width: 8.1m (26.6ft),  Out-to-Out Width: 8.2m (26.9ft)

Condition: Deck: Serious,  Superstructure: Serious,  Substructure: Satisfactory,  Channel: Satisfactory,  Operating Rating: 26.6 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Inventory Rating: 10.0 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Structural Evaluation: High priority of corrective action,  Deck Geometry: Somewhat better than minimum adequacy,  Waterway Adequacy: Better than present minimum criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Bridge Posting: Required (Relationship of Operating Rating to Maximum Legal Load: > 39.9% below),  Designated Inspection Frequency: Every 24 months,  Other Special Inspection Frequency: Every 6 months,  Inspection Date: June 2020,  Other Special Inspection Date: October 2021,  Deck Structure Type: Concrete Precast Panels,  Wearing Surface/Protective System: Wearing Surface: Bituminous
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Structure Number: 453107,  Location: N. OF U.S. 30 (Lat: 41.771231,  Lng: -88.527911),  Route carried "on" structure: County highway ,  Year Built: 1975,  Year Reconstructed: 2016,  Status: Open,  Structure Length: 1.41m (4.63ft),  Average Daily Traffic: 1,400 (year 2018),  Truck Traffic: 17%,  Average Future Daily Traffic: 1,404 (year 2032),  Design Load: HS 25 or greater,  Features Intersected: WELCH CREEK,  Facility Carried by Structure: DAUBERMAN ROAD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 12.038,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 12.2m (40.0ft),  Skew: 2 degrees,  Material/Design: Prestressed concrete,  Design/Construction: Box Beam or Girders - Multiple,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 13.1m (43.0ft),  Curb-To-Curb Width: 12.2m (40.0ft),  Out-to-Out Width: 13.2m (43.3ft)

Condition: Deck: Very good,  Superstructure: Very good,  Substructure: Good,  Channel: Good,  Operating Rating: 68.0 metric tons,  Method Used To Determine Operating Rating: Load and Resistance Factor Rating (LRFR) rating reported by rating factor(RF) method using HL-93 loadings,  Inventory Rating: 52.5 metric tons,  Method Used To Determine Inventory Rating: Load and Resistance Factor Rating (LRFR) rating reported by rating factor(RF) method using HL-93 loadings,  Structural Evaluation: Better than present minimum criteria,  Deck Geometry: Better than present minimum criteria,  Waterway Adequacy: Equal to present minimum criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 48 months,  Inspection Date: July 2018,  Deck Structure Type: Concrete Precast Panels,  Wearing Surface/Protective System: Wearing Surface: Integral Concrete,  Deck Protection: Epoxy Coated Reinforcing
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Structure Number: 453111,  Location: 1.5 MI NW BIG ROCK (Lat: 41.785608,  Lng: -88.573783),  Route carried "on" structure: County highway ,  Year Built: 1978,  Status: Open,  Structure Length: 1.01m (3.31ft),  Average Daily Traffic: 100 (year 2018),  Truck Traffic: 13%,  Average Future Daily Traffic: 128 (year 2032),  Design Load: HS 20,  Features Intersected: Malgren Drain,  Facility Carried by Structure: TR-173 (Scott Rd)
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 2.865,  Lanes on structure: 2,  Owner: Town or Township Highway Agency,  Approaching Roadway Width: 6.7m (22.0ft),  Material/Design: Prestressed concrete,  Design/Construction: Box Beam or Girders - Multiple,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 9.7m (31.8ft),  Curb-To-Curb Width: 8.2m (26.9ft),  Out-to-Out Width: 8.2m (26.9ft)

Condition: Deck: Fair,  Superstructure: Fair,  Substructure: Satisfactory,  Channel: Good,  Operating Rating: 53.5 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Inventory Rating: 32.1 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Structural Evaluation: Somewhat better than minimum adequacy,  Deck Geometry: Equal to present minimum criteria,  Waterway Adequacy: Equal to present minimum criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: April 2021,  Deck Structure Type: Concrete Precast Panels,  Wearing Surface/Protective System: Wearing Surface: Bituminous
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Structure Number: 453117,  Location: 0.6 MI NW FINLEY RD (Lat: 41.822619,  Lng: -88.475769),  Route carried "on" structure: County highway ,  Year Built: 1971,  Status: Open,  Structure Length: 2.67m (8.76ft),  Average Daily Traffic: 50 (year 2020),  Truck Traffic: 20%,  Average Future Daily Traffic: 64 (year 2032),  Design Load: HS 20,  Features Intersected: BLACKBERRY CREEK,  Facility Carried by Structure: SEAVEY RD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 2.366,  Lanes on structure: 2,  Owner: Town or Township Highway Agency,  Approaching Roadway Width: 7.3m (24.0ft),  Material/Design: Concrete continuous,  Design/Construction: Slab,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 9.9m (32.5ft),  Curb-To-Curb Width: 8.1m (26.6ft),  Out-to-Out Width: 9.1m (29.9ft)

Condition: Deck: Satisfactory,  Superstructure: Satisfactory,  Substructure: Satisfactory,  Channel: Satisfactory,  Operating Rating: 61.2 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Inventory Rating: 36.6 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Structural Evaluation: Equal to present minimum criteria,  Deck Geometry: Equal to present minimum criteria,  Waterway Adequacy: Equal to present desirable criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: May 2021,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Bituminous
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Structure Number: 453146,  Location: 1.2 M W OF DAUBERMAN (Lat: 41.793411,  Lng: -88.540236),  Route carried "on" structure: County highway ,  Year Built: 1997,  Status: Open,  Structure Length: 2.41m (7.91ft),  Average Daily Traffic: 425 (year 2018),  Truck Traffic: 5%,  Average Future Daily Traffic: 479 (year 2032),  Design Load: HS 20,  Features Intersected: WELCH CREEK,  Facility Carried by Structure: SCOTT RD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 1.175,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 7.3m (24.0ft),  Skew: 1 degrees,  Material/Design: Prestressed concrete,  Design/Construction: Box Beam or Girders - Multiple,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 23.3m (76.4ft),  Curb-To-Curb Width: 9.1m (29.9ft),  Out-to-Out Width: 9.1m (29.9ft)

Condition: Deck: Poor,  Superstructure: Good,  Substructure: Good,  Channel: Good,  Operating Rating: 50.5 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Inventory Rating: 28.2 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Structural Evaluation: Better than present minimum criteria,  Deck Geometry: Equal to present minimum criteria,  Waterway Adequacy: Equal to present desirable criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: June 2020,  Deck Structure Type: Concrete Precast Panels,  Wearing Surface/Protective System: Wearing Surface: Integral Concrete,  Deck Protection: Epoxy Coated Reinforcing
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Structure Number: 453151,  Location: 1.0 MI S BIG ROCK (Lat: 41.743672,  Lng: -88.540961),  Route carried "on" structure: County highway ,  Year Built: 2005,  Status: Open,  Structure Length: 4.37m (14.34ft),  Average Daily Traffic: 5,850 (year 2018),  Truck Traffic: 4%,  Average Future Daily Traffic: 6,061 (year 2032),  Design Load: HS 20,  Features Intersected: BIG ROCK CREEK,  Facility Carried by Structure: GRANART ROAD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.032,  Lanes on structure: 2,  Base Highway Network: Yes,  Owner: County Highway Agency,  Approaching Roadway Width: 15.8m (51.8ft),  Skew: 3 degrees,  Material/Design: Prestressed concrete,  Design/Construction: Box Beam or Girders - Multiple,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 14.2m (46.6ft),  Curb-To-Curb Width: 15.8m (51.8ft),  Out-to-Out Width: 16.5m (54.1ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Good,  Channel: Good,  Operating Rating: 73.9 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Inventory Rating: 44.1 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Structural Evaluation: Better than present minimum criteria,  Deck Geometry: Superior to present desirable criteria,  Waterway Adequacy: Equal to present desirable criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 48 months,  Inspection Date: March 2018,  Deck Structure Type: Concrete Precast Panels,  Wearing Surface/Protective System: Wearing Surface: Integral Concrete,  Deck Protection: Epoxy Coated Reinforcing
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Structure Number: 455011,  Location: .2 MI.S OFGRANART RD (Lat: 41.758011,  Lng: -88.508411),  Route carried "on" structure: City street ,  Year Built: 1982,  Status: Open,  Structure Length: 0.75m (2.46ft),  Average Daily Traffic: 425 (year 2018),  Truck Traffic: 13%,  Average Future Daily Traffic: 425 (year 2032),  Design Load: HS 20,  Features Intersected: WELCH CREEK,  Facility Carried by Structure: CAMP DEAN ROAD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.274,  Lanes on structure: 2,  Owner: City or Municipal Highway Agency,  Approaching Roadway Width: 10.4m (34.1ft),  Material/Design: Concrete continuous,  Design/Construction: Culvert,  Number Of Spans In Main Unit: 2,  Length of Maximum Span: 3.9m (12.8ft),  Curb-To-Curb Width: 10.4m (34.1ft),  Out-to-Out Width: 12.8m (42.0ft)

Condition: Channel: Satisfactory,  Culverts: Fair,  Operating Rating: 60.6 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Inventory Rating: 36.0 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Structural Evaluation: Somewhat better than minimum adequacy,  Deck Geometry: Equal to present minimum criteria,  Waterway Adequacy: Equal to present desirable criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: October 2021
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Structure Number: 45996,  Location: .5 MI. W OF ILL 47 (Lat: 41.823233,  Lng: -88.475719),  Route carried "on" structure: Interstate 88,  Year Built: 1972,  Status: Open,  Structure Length: 2.68m (8.79ft),  Average Daily Traffic: 11,550 (year 2020),  Truck Traffic: 22%,  Average Future Daily Traffic: 18,311 (year 2032),  Design Load: HS 20,  Features Intersected: BLACKBERRY CR
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 174.625,  Lanes on structure: 2,  Base Highway Network: Yes,  Toll: On toll road,  Owner: State Toll Authority,  Approaching Roadway Width: 12.2m (40.0ft),  Skew: 1 degrees,  Material/Design: Concrete continuous,  Design/Construction: Slab,  Number Of Spans In Main Unit: 3,  Number Of Approach Spans: 2,  Length of Maximum Span: 11.0m (36.1ft),  Curb-To-Curb Width: 12.5m (41.0ft),  Out-to-Out Width: 13.0m (42.7ft)

Condition: Deck: Satisfactory,  Superstructure: Satisfactory,  Substructure: Satisfactory,  Channel: Good,  Operating Rating: 64.2 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Inventory Rating: 38.6 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Structural Evaluation: Equal to present minimum criteria,  Deck Geometry: Better than present minimum criteria,  Waterway Adequacy: Superior to present desirable criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 24 months,  Underwater Inspection Frequency: Every 60 months,  Inspection Date: August 2020,  Underwater Inspection Date: April 2018,  Deck Structure Type: Concrete Cast-file-Place
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Structure Number: 459961,  Location: .5 MI. W OF ILL 47 (Lat: 41.823108,  Lng: -88.475622),  Route carried "on" structure: Interstate 88,  Year Built: 1972,  Status: Open,  Structure Length: 2.68m (8.79ft),  Average Daily Traffic: 11,550 (year 2020),  Truck Traffic: 22%,  Average Future Daily Traffic: 18,311 (year 2032),  Design Load: HS 20,  Features Intersected: BLACKBERRY CR
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 174.641,  Lanes on structure: 2,  Base Highway Network: Yes,  Toll: On toll road,  Owner: State Toll Authority,  Approaching Roadway Width: 12.2m (40.0ft),  Skew: 1 degrees,  Material/Design: Concrete continuous,  Design/Construction: Slab,  Number Of Spans In Main Unit: 3,  Number Of Approach Spans: 2,  Length of Maximum Span: 11.0m (36.1ft),  Curb-To-Curb Width: 12.5m (41.0ft),  Out-to-Out Width: 13.0m (42.7ft)

Condition: Deck: Satisfactory,  Superstructure: Satisfactory,  Substructure: Good,  Channel: Satisfactory,  Operating Rating: 64.2 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Inventory Rating: 38.6 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Structural Evaluation: Equal to present minimum criteria,  Deck Geometry: Better than present minimum criteria,  Waterway Adequacy: Superior to present desirable criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 24 months,  Underwater Inspection Frequency: Every 60 months,  Inspection Date: August 2020,  Underwater Inspection Date: April 2018,  Deck Structure Type: Concrete Cast-file-Place
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Structure Number: 459972,  Location: 0.25 MI W RHODES AV (Lat: 41.752375,  Lng: -88.549875),  Route carried "on" structure: County highway ,  Year Built: 2017,  Status: Open,  Structure Length: 4.06m (13.32ft),  Average Daily Traffic: 175 (year 2018),  Truck Traffic: 6%,  Average Future Daily Traffic: 223 (year 2032),  Design Load: HS 25 or greater,  Features Intersected: BIG ROCK CREEK,  Facility Carried by Structure: PRICE ROAD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.595,  Lanes on structure: 2,  Owner: Town or Township Highway Agency,  Approaching Roadway Width: 8.5m (27.9ft),  Skew: 2 degrees,  Material/Design: Concrete continuous,  Design/Construction: Slab,  Number Of Spans In Main Unit: 4,  Length of Maximum Span: 11.0m (36.1ft),  Curb-To-Curb Width: 8.5m (27.9ft),  Out-to-Out Width: 8.5m (27.9ft)

Condition: Deck: Very good,  Superstructure: Very good,  Substructure: Very good,  Channel: Very good,  Operating Rating: 42.1 metric tons,  Method Used To Determine Operating Rating: Load and Resistance Factor Rating (LRFR) rating reported by rating factor(RF) method using HL-93 loadings,  Inventory Rating: 32.4 metric tons,  Method Used To Determine Inventory Rating: Load and Resistance Factor Rating (LRFR) rating reported by rating factor(RF) method using HL-93 loadings,  Structural Evaluation: Equal to present desirable criteria,  Deck Geometry: Equal to present minimum criteria,  Waterway Adequacy: Superior to present desirable criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 48 months,  Inspection Date: October 2019,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Deck Protection: Bituminous
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Structure Number: 473017,  Location: CH9 OVR BIG ROCK (Lat: 41.713936,  Lng: -88.494547),  Route carried "on" structure: Other road ,  Year Built: 1964,  Year Reconstructed: 2014,  Status: Open,  Structure Length: 3.10m (10.17ft),  Average Daily Traffic: 6,800 (year 2015),  Truck Traffic: 24%,  Average Future Daily Traffic: 8,322 (year 2032),  Design Load: HS 20,  Features Intersected: BIG ROCK CREEK,  Facility Carried by Structure: GALENA ROAD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 7.773,  Lanes on structure: 2,  Base Highway Network: Yes,  Owner: County Highway Agency,  Approaching Roadway Width: 11.0m (36.1ft),  Material/Design: Prestressed concrete,  Design/Construction: Box Beam or Girders - Multiple,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 10.2m (33.5ft),  Curb-To-Curb Width: 11.0m (36.1ft),  Out-to-Out Width: 11.0m (36.1ft)

Condition: Deck: Very good,  Superstructure: Very good,  Substructure: Satisfactory,  Channel: Satisfactory,  Operating Rating: 88.8 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Inventory Rating: 65.1 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Structural Evaluation: Equal to present minimum criteria,  Deck Geometry: Meets minimum limits,  Waterway Adequacy: Equal to present minimum criteria,  Approach Roadway Alignment: Equal to present minimum criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: August 2020,  Deck Structure Type: Concrete Precast Panels,  Wearing Surface/Protective System: Wearing Surface: Bituminous,  Membrane: Built-up
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