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Bridge Statistics for Boone, Iowa (IA)
Condition, Traffic, Stress, Structural Evaluation, Project Costs


  • National Bridge Inventory (NBI) Statistics
  • 20Number of bridges
  • 367ft / 112mTotal length
  • 43,010Total average daily traffic
  • 4,757Total average daily truck traffic
  • National Bridge Inventory (NBI) Registered Bridges for Boone
  • No street view available for this location

New bridges in Boone, IA - historical statistics
  • New bridges - historical statistics
  • 21900-1909
  • 21910-1919
  • 21930-1939
  • 11950-1959
  • 71960-1969
  • 21980-1989
  • 12000-2009
  • 32010-2019
Reconstructed bridges in Boone, IA - Historical Statistics
  • Reconstructed bridges - Historical Statistics
  • 11960-1969
  • 11970-1979
  • 01980-1989
  • 11990-1999
Average Bridge Daily Traffic in Boone, IA
Bridge Condition - Deck
  • Bridge Condition - Deck
  • 6.7%Excellent
  • 13.3%Very good
  • 6.7%Good
  • 33.3%Satisfactory
  • 26.7%Fair
  • 6.7%Poor
  • 6.7%Failed
Bridge Condition - Superstructure
  • Bridge Condition - Superstructure
  • 6.7%Excellent
  • 13.3%Very good
  • 6.7%Good
  • 20.0%Satisfactory
  • 40.0%Fair
  • 6.7%Poor
  • 6.7%Failed
Bridge Condition - Substructure
  • Bridge Condition - Substructure
  • 6.7%Excellent
  • 13.3%Very good
  • 33.3%Good
  • 13.3%Satisfactory
  • 13.3%Fair
  • 13.3%Poor
  • 6.7%Failed
Bridge Condition - Channel
  • Bridge Condition - Channel
  • 5.6%Excellent
  • 16.7%Very good
  • 27.8%Good
  • 22.2%Satisfactory
  • 27.8%Fair
Bridge Condition - Culverts
  • Bridge Condition - Culverts
  • 25.0%Very good
  • 25.0%Good
  • 25.0%Satisfactory
  • 25.0%Fair
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Structure Number: 1519,  Location: AT JUNCTION WITH SR R18 (Lat: 42.033572,  Lng: -93.950711),  Route carried "on" structure: US 30,  Year Built: 1962,  Year Reconstructed: 1975,  Status: Open,  Structure Length: 0.73m (2.40ft),  Average Daily Traffic: 8,000 (year 2020),  Truck Traffic: 13%,  Average Future Daily Traffic: 8,000 (year 2042),  Design Load: H 20,  Features Intersected: NOAH CREEK
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 209.780,  Lanes on structure: 4,  Base Highway Network: Yes,  Owner: State Highway Agency,  Approaching Roadway Width: 24.4m (80.1ft),  Skew: 23 degrees,  Material/Design: Concrete continuous,  Design/Construction: Culvert,  Number Of Spans In Main Unit: 2,  Length of Maximum Span: 3.4m (11.2ft)

Condition: Channel: Satisfactory,  Culverts: Satisfactory,  Operating Rating: 35.3 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 21.1 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Somewhat better than minimum adequacy,  Waterway Adequacy: Better than present minimum criteria,  Approach Roadway Alignment: Equal to present minimum criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: January 2022
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Structure Number: 152,  Location: 1.3 mi. E of Jct. SR R18 (Lat: 42.034619,  Lng: -93.927211),  Route carried "on" structure: US 30,  Year Built: 1963,  Status: Open,  Structure Length: 20.09m (65.91ft),  Average Daily Traffic: 4,000 (year 2020),  Truck Traffic: 13%,  Average Future Daily Traffic: 4,000 (year 2040),  Design Load: HS 20,  Features Intersected: DES MOINES RIVER
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 211.730,  Lanes on structure: 2,  Base Highway Network: Yes,  Owner: State Highway Agency,  Approaching Roadway Width: 14.6m (47.9ft),  Material/Design: Steel continuous,  Design/Construction: Girder and Floorbeam System,  Number Of Spans In Main Unit: 7,  Length of Maximum Span: 33.2m (108.9ft),  Curb-To-Curb Width: 9.1m (29.9ft),  Out-to-Out Width: 11.0m (36.1ft)

Condition: Deck: Satisfactory,  Superstructure: Fair,  Substructure: Satisfactory,  Channel: Good,  Operating Rating: 40.9 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 24.6 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Somewhat better than minimum adequacy,  Deck Geometry: Meets minimum limits,  Waterway Adequacy: Equal to present minimum criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 24 months,  Critical Feature Inspection Frequency: Every 24 months,  Underwater Inspection Frequency: Every 72 months,  Other Special Inspection Frequency: Every 24 months,  Inspection Date: April 2020,  Critical Feature Inspection Date: April 2020,  Underwater Inspection Date: April 2020,  Other Special Inspection Date: Febuary 2021,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Low Slump Concrete
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Structure Number: 1521,  Location: 1.3 mi. E of Jct. SR R18 (Lat: 42.034844,  Lng: -93.924656),  Route carried "on" structure: US 30,  Year Built: 1963,  Status: Open,  Structure Length: 22.07m (72.41ft),  Average Daily Traffic: 4,000 (year 2020),  Truck Traffic: 13%,  Average Future Daily Traffic: 4,000 (year 2040),  Design Load: HS 20,  Features Intersected: DES MOINES RIVER
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 320.369,  Lanes on structure: 2,  Owner: State Highway Agency,  Approaching Roadway Width: 14.6m (47.9ft),  Material/Design: Steel continuous,  Design/Construction: Girder and Floorbeam System,  Number Of Spans In Main Unit: 7,  Length of Maximum Span: 33.2m (108.9ft),  Curb-To-Curb Width: 9.1m (29.9ft),  Out-to-Out Width: 11.0m (36.1ft)

Condition: Deck: Satisfactory,  Superstructure: Fair,  Substructure: Good,  Channel: Good,  Operating Rating: 36.5 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 21.9 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Somewhat better than minimum adequacy,  Deck Geometry: Meets minimum limits,  Waterway Adequacy: Equal to present minimum criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 24 months,  Critical Feature Inspection Frequency: Every 24 months,  Underwater Inspection Frequency: Every 72 months,  Other Special Inspection Frequency: Every 24 months,  Inspection Date: April 2020,  Critical Feature Inspection Date: April 2020,  Underwater Inspection Date: April 2020,  Other Special Inspection Date: Febuary 2021,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Low Slump Concrete
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Structure Number: 15222,  Location: 0.7 mi. W of Jct. SR R23 (Lat: 42.034656,  Lng: -93.893647),  Route carried "on" structure: US 30,  Year Built: 1962,  Year Reconstructed: 1965,  Status: Open,  Structure Length: 0.64m (2.10ft),  Average Daily Traffic: 8,000 (year 2020),  Truck Traffic: 13%,  Average Future Daily Traffic: 8,000 (year 2040),  Features Intersected: HONEY CREEK
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 214.509,  Lanes on structure: 4,  Base Highway Network: Yes,  Owner: State Highway Agency,  Approaching Roadway Width: 25.0m (82.0ft),  Skew: 23 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: Fair,  Culverts: Fair,  Structural Evaluation: Somewhat better than minimum adequacy,  Waterway Adequacy: Equal to present minimum criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: August 2020
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Structure Number: 1534,  Location: AT JUNCTION WITH US 30 (Lat: 42.034381,  Lng: -93.815403),  Route carried "on" structure: State highway 17,  Year Built: 1968,  Status: Open,  Structure Length: 8.50m (27.89ft),  Average Daily Traffic: 4,630 (year 2020),  Truck Traffic: 10%,  Average Future Daily Traffic: 4,630 (year 2042),  Design Load: HS 20,  Features Intersected: US 30
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 32.383,  Lanes on structure: 2,  Lanes under structure: 4,  Base Highway Network: Yes,  Owner: State Highway Agency,  Approaching Roadway Width: 14.6m (47.9ft),  Material/Design: Prestressed concrete,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 4,  Length of Maximum Span: 25.0m (82.0ft),  Curb-To-Curb Width: 13.4m (44.0ft),  Out-to-Out Width: 14.4m (47.2ft)

Condition: Deck: Satisfactory,  Superstructure: Satisfactory,  Substructure: Good,  Operating Rating: 67.5 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 27.8 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Equal to present minimum criteria,  Deck Geometry: Better than present minimum criteria,  Underclear: Superior to present desirable criteria,  Approach Roadway Alignment: Somewhat better than minimum adequacy,  Designated Inspection Frequency: Every 24 months,  Inspection Date: March 2022,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Low Slump Concrete
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Structure Number: 15421,  Location: 084273607 (Lat: 42.042208,  Lng: -93.934253),  Route carried "on" structure: County highway ,  Year Built: 2000,  Status: Open,  Structure Length: 21.00m (68.90ft),  Average Daily Traffic: 1,530 (year 2019),  Truck Traffic: 5%,  Average Future Daily Traffic: 1,530 (year 2040),  Design Load: HS 20,  Features Intersected: DES MOINES RIVER,  Facility Carried by Structure: E 41
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 7.165,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 12.2m (40.0ft),  Skew: 10 degrees,  Material/Design: Prestressed concrete,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 5,  Length of Maximum Span: 43.0m (141.1ft),  Curb-To-Curb Width: 9.1m (29.9ft),  Out-to-Out Width: 10.0m (32.8ft)

Condition: Deck: Very good,  Superstructure: Very good,  Substructure: Very good,  Channel: Very good,  Operating Rating: 44.1 metric tons,  Method Used To Determine Operating Rating: Assigned rating based on Load Factor Design (LFD) reported in metric tons,  Inventory Rating: 32.7 metric tons,  Method Used To Determine Inventory Rating: Assigned rating based on Load Factor Design (LFD) reported in metric tons,  Structural Evaluation: Equal to present desirable criteria,  Deck Geometry: Somewhat better than minimum adequacy,  Waterway Adequacy: Equal to present desirable criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Length Of Structure Improvement: 68.90m (226.05ft),  Designated Inspection Frequency: Every 24 months,  Underwater Inspection Frequency: Every 48 months,  Inspection Date: May 2020,  Underwater Inspection Date: August 2020,  Bridge Improvement Cost: $15,000,  Roadway Improvement Cost: $2,000,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Monolithic Concrete
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Structure Number: 6005,  Location: 072343005 (Lat: 41.011608,  Lng: -94.799333),  Route carried "on" structure: County highway ,  Year Built: 1966,  Status: Open,  Structure Length: 1.22m (4.00ft),  Average Daily Traffic: 40 (year 2016),  Average Future Daily Traffic: 40 (year 2042),  Design Load: HS 20,  Features Intersected: STREAM,  Facility Carried by Structure: 205TH STREET
Minimum Vertical Clearance: 4.98m (16.34ft),  Kilometerpoint: 4.600,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 8.5m (27.9ft),  Material/Design: Prestressed concrete,  Design/Construction: Tee Beam,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 11.9m (39.0ft),  Curb-To-Curb Width: 6.0m (19.7ft),  Out-to-Out Width: 6.1m (20.0ft)

Condition: Deck: Fair,  Superstructure: Fair,  Substructure: Poor,  Channel: Satisfactory,  Operating Rating: 44.0 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 26.4 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Meets minimum limits,  Deck Geometry: Meets minimum limits,  Waterway Adequacy: Better than present minimum criteria,  Approach Roadway Alignment: Equal to present minimum criteria,  Length Of Structure Improvement: 6.00m (19.69ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: January 2022,  Bridge Improvement Cost: $79,000,  Roadway Improvement Cost: $8,000,  Deck Structure Type: Other
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Structure Number: 77351,  Location: 083260714 (Lat: 42.017464,  Lng: -93.914092),  Route carried "on" structure: County highway ,  Year Built: 2017,  Status: Open,  Structure Length: 3.96m (12.99ft),  Average Daily Traffic: 110 (year 2019),  Average Future Daily Traffic: 110 (year 2040),  Design Load: HL 93,  Features Intersected: HONEY CREEK,  Facility Carried by Structure: MONTONA RD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.716,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 8.5m (27.9ft),  Material/Design: Concrete continuous,  Design/Construction: Slab,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 15.5m (50.9ft),  Curb-To-Curb Width: 9.3m (30.5ft),  Out-to-Out Width: 10.1m (33.1ft)

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: Assigned ratings based on Load and Resistance Factor Design (LRFD) reported by rating factor (RF) using HL93 loadings,  Inventory Rating: 32.4 metric tons,  Method Used To Determine Inventory Rating: Assigned ratings based on Load and Resistance Factor Design (LRFD) reported by rating factor (RF) using HL93 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: May 2020,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Monolithic Concrete,  Deck Protection: Epoxy Coated Reinforcing
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Structure Number: 7736,  Location: 083261201 (Lat: 42.022983,  Lng: -93.830767),  Route carried "on" structure: County highway ,  Year Built: 1915,  Status: Open,  Structure Length: 0.76m (2.49ft),  Average Daily Traffic: 50 (year 2019),  Average Future Daily Traffic: 50 (year 2040),  Features Intersected: BIG CREEK,  Facility Carried by Structure: LOCAL
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 21.490,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 7.3m (24.0ft),  Material/Design: Concrete,  Design/Construction: Slab,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 6.7m (22.0ft),  Curb-To-Curb Width: 5.2m (17.1ft),  Out-to-Out Width: 5.5m (18.0ft)

Condition: Deck: Fair,  Superstructure: Fair,  Substructure: Fair,  Channel: Fair,  Operating Rating: 59.0 metric tons,  Method Used To Determine Operating Rating: Allowable Stress (AS),  Inventory Rating: 35.4 metric tons,  Method Used To Determine Inventory Rating: Allowable Stress (AS),  Structural Evaluation: Somewhat better than minimum adequacy,  Deck Geometry: High priority of corrective action,  Waterway Adequacy: Somewhat better than minimum adequacy,  Approach Roadway Alignment: Better than present minimum criteria,  Length Of Structure Improvement: 5.00m (16.40ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: May 2020,  Bridge Improvement Cost: $132,000,  Roadway Improvement Cost: $13,000,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Gravel
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Structure Number: 7737,  Location: 083261301 (Lat: 42.008483,  Lng: -93.819522),  Route carried "on" structure: County highway ,  Year Built: 1915,  Status: Open,  Structure Length: 0.79m (2.59ft),  Average Daily Traffic: 25 (year 2019),  Average Future Daily Traffic: 25 (year 2040),  Features Intersected: BIG CREEK,  Facility Carried by Structure: LOCAL
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 20.112,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 7.3m (24.0ft),  Skew: 3 degrees,  Material/Design: Concrete,  Design/Construction: Slab,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 7.0m (23.0ft),  Curb-To-Curb Width: 6.1m (20.0ft),  Out-to-Out Width: 6.1m (20.0ft)

Condition: Deck: Fair,  Superstructure: Fair,  Substructure: Poor,  Channel: Satisfactory,  Operating Rating: 40.2 metric tons,  Method Used To Determine Operating Rating: Field evaluation and documented engineering judgment,  Inventory Rating: 22.6 metric tons,  Method Used To Determine Inventory Rating: Field evaluation and documented engineering judgment,  Structural Evaluation: Meets minimum limits,  Deck Geometry: Somewhat better than minimum adequacy,  Waterway Adequacy: Equal to present minimum criteria,  Approach Roadway Alignment: Better than present minimum criteria,  Length Of Structure Improvement: 4.60m (15.09ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: May 2020,  Bridge Improvement Cost: $121,000,  Roadway Improvement Cost: $12,000,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Gravel
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Structure Number: 7739,  Location: 083261904 (Lat: 41.980425,  Lng: -93.926258),  Route carried "on" structure: County highway ,  Year Built: 1950,  Status: Posted for load-capacity,  Structure Length: 1.43m (4.69ft),  Average Daily Traffic: 30 (year 2019),  Average Future Daily Traffic: 30 (year 2040),  Features Intersected: TRIB DES MOINES RIVER,  Facility Carried by Structure: LOCAL
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 11.718,  Lanes on structure: 1,  Owner: County Highway Agency,  Approaching Roadway Width: 8.5m (27.9ft),  Material/Design: Steel,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 13.4m (44.0ft),  Curb-To-Curb Width: 5.4m (17.7ft),  Out-to-Out Width: 5.8m (19.0ft)

Condition: Deck: Fair,  Superstructure: Fair,  Substructure: Fair,  Channel: Fair,  Operating Rating: 37.0 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 22.1 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Somewhat better than minimum adequacy,  Deck Geometry: High priority of corrective action,  Waterway Adequacy: Somewhat better than minimum adequacy,  Approach Roadway Alignment: Somewhat better than minimum adequacy,  Length Of Structure Improvement: 7.50m (24.61ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: May 2020,  Bridge Improvement Cost: $195,000,  Roadway Improvement Cost: $20,000,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Gravel
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Structure Number: 77801,  Location: 084271307 (Lat: 42.080792,  Lng: -93.939419),  Route carried "on" structure: County highway ,  Year Built: 1980,  Status: Open,  Structure Length: 22.07m (72.41ft),  Average Daily Traffic: 1,030 (year 2019),  Truck Traffic: 7%,  Average Future Daily Traffic: 1,030 (year 2040),  Design Load: H 20,  Features Intersected: DES MOINES RIVER,  Facility Carried by Structure: FM
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 4.894,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 13.4m (44.0ft),  Skew: 3 degrees,  Material/Design: Steel continuous,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 8,  Length of Maximum Span: 35.7m (117.1ft),  Curb-To-Curb Width: 9.1m (29.9ft),  Out-to-Out Width: 9.8m (32.2ft)

Condition: Deck: Good,  Superstructure: Satisfactory,  Substructure: Good,  Channel: Satisfactory,  Operating Rating: 45.5 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 27.3 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Equal to present minimum criteria,  Deck Geometry: Somewhat better than minimum adequacy,  Waterway Adequacy: Equal to present desirable criteria,  Approach Roadway Alignment: Better than present minimum criteria,  Length Of Structure Improvement: 72.40m (237.53ft),  Designated Inspection Frequency: Every 24 months,  Underwater Inspection Frequency: Every 48 months,  Inspection Date: May 2020,  Underwater Inspection Date: August 2020,  Bridge Improvement Cost: $15,000,  Roadway Improvement Cost: $2,000,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Monolithic Concrete
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Structure Number: 1879,  Location: 078092302 (Lat: 41.551803,  Lng: -91.866775),  Route carried "on" structure: County highway ,  Year Built: 1900,  Status: Posted for load-capacity,  Structure Length: 0.79m (2.59ft),  Average Daily Traffic: 110 (year 2018),  Average Future Daily Traffic: 110 (year 2040),  Features Intersected: MILLER CREEK,  Facility Carried by Structure: LOCAL
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 4.503,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 6.4m (21.0ft),  Material/Design: Concrete,  Design/Construction: Slab,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 7.3m (24.0ft),  Curb-To-Curb Width: 6.0m (19.7ft),  Out-to-Out Width: 7.0m (23.0ft)

Condition: Deck: Poor,  Superstructure: Poor,  Substructure: Satisfactory,  Channel: Fair,  Operating Rating: 53.0 metric tons,  Method Used To Determine Operating Rating: Allowable Stress (AS),  Inventory Rating: 30.7 metric tons,  Method Used To Determine Inventory Rating: Allowable Stress (AS),  Structural Evaluation: Meets minimum limits,  Deck Geometry: High priority of corrective action,  Waterway Adequacy: Equal to present minimum criteria,  Approach Roadway Alignment: Better than present minimum criteria,  Length Of Structure Improvement: 4.60m (15.09ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: March 2020,  Bridge Improvement Cost: $128,000,  Roadway Improvement Cost: $13,000,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Gravel
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Structure Number: 36175,  Location: 073211202 (Lat: 41.140019,  Lng: -93.231178),  Route carried "on" structure: County highway ,  Year Built: 1900,  Year Reconstructed: 2004,  Status: Temporarily open,  Structure Length: 0.61m (2.00ft),  Average Daily Traffic: 20 (year 2014),  Average Future Daily Traffic: 20 (year 2040),  Features Intersected: DR TO ENGLISH CREEK,  Facility Carried by Structure: LOCAL
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 17.346,  Lanes on structure: 1,  Owner: County Highway Agency,  Approaching Roadway Width: 5.5m (18.0ft),  Material/Design: Steel,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 5.8m (19.0ft),  Curb-To-Curb Width: 4.6m (15.1ft),  Out-to-Out Width: 4.9m (16.1ft)

Condition: Deck: Failed,  Superstructure: Failed,  Substructure: Failed,  Channel: Good,  Deck Geometry: Better than present minimum criteria,  Waterway Adequacy: Meets minimum limits,  Approach Roadway Alignment: Somewhat better than minimum adequacy,  Length Of Structure Improvement: 4.00m (13.12ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: November 2020,  Bridge Improvement Cost: $93,000,  Roadway Improvement Cost: $9,000,  Deck Structure Type: Wood or Timber,  Wearing Surface/Protective System: Wearing Surface: Other
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Structure Number: 36305,  Location: 082121201 (Lat: 41.935108,  Lng: -92.188489),  Route carried "on" structure: County highway ,  Year Built: 1988,  Status: Open,  Structure Length: 0.73m (2.40ft),  Average Daily Traffic: 15 (year 2017),  Average Future Daily Traffic: 15 (year 2041),  Design Load: HS 20,  Features Intersected: SMALL,  Facility Carried by Structure: LOCAL
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 9.064,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 7.3m (24.0ft),  Skew: 3 degrees,  Material/Design: Concrete continuous,  Design/Construction: Culvert,  Number Of Spans In Main Unit: 2,  Length of Maximum Span: 3.7m (12.1ft)

Condition: Channel: Fair,  Culverts: Good,  Operating Rating: 44.1 metric tons,  Method Used To Determine Operating Rating: Assigned rating based on Load Factor Design (LFD) reported in metric tons,  Inventory Rating: 32.7 metric tons,  Method Used To Determine Inventory Rating: Assigned rating based on Load Factor Design (LFD) reported in metric tons,  Structural Evaluation: Better than present minimum criteria,  Waterway Adequacy: Equal to present desirable criteria,  Approach Roadway Alignment: Better than present minimum criteria,  Length Of Structure Improvement: 2.10m (6.89ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: May 2021,  Bridge Improvement Cost: $15,000,  Roadway Improvement Cost: $2,000
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Structure Number: 36637,  Location: 085263602 (Lat: 42.126514,  Lng: -93.835247),  Route carried "on" structure: County highway ,  Year Built: 2017,  Status: Open,  Structure Length: 0.64m (2.10ft),  Average Daily Traffic: 20 (year 2019),  Average Future Daily Traffic: 20 (year 2040),  Design Load: HS 20,  Features Intersected: PRAIRIE CREEK,  Facility Carried by Structure: R AVE
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 12.611,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 8.5m (27.9ft),  Material/Design: Aluminum, Iron,  Design/Construction: Culvert,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 6.4m (21.0ft)

Condition: Channel: Very good,  Culverts: Very good,  Operating Rating: 32.4 metric tons,  Method Used To Determine Operating Rating: Assigned ratings based on Load and Resistance Factor Design (LRFD) reported by rating factor (RF) using HL93 loadings,  Inventory Rating: 25.3 metric tons,  Method Used To Determine Inventory Rating: Assigned ratings based on Load and Resistance Factor Design (LRFD) reported by rating factor (RF) using HL93 loadings,  Structural Evaluation: 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 2020
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Structure Number: 699112,  Location: IN LEDGES STATE PARK (Lat: 41.992975,  Lng: -93.890672),  Route carried "on" structure: State lands road ,  Year Built: 2011,  Status: Open,  Structure Length: 3.76m (12.34ft),  Design Load: HL 93,  Features Intersected: PEASE CREEK,  Facility Carried by Structure: LOWER LEDGES RD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.995,  Lanes on structure: 2,  Owner: State Park, Forest, or Reservation Agency,  Approaching Roadway Width: 12.9m (42.3ft),  Skew: 3 degrees,  Material/Design: Concrete continuous,  Design/Construction: Slab,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 14.3m (46.9ft),  Curb-To-Curb Width: 9.3m (30.5ft),  Out-to-Out Width: 10.1m (33.1ft)

Condition: Deck: Excellent,  Superstructure: Excellent,  Substructure: Excellent,  Channel: Excellent,  Operating Rating: 70.5 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 42.3 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Superior to present desirable 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,  Inspection Date: November 2020,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Monolithic Concrete,  Deck Protection: Epoxy Coated Reinforcing
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Structure Number: 6995,  Location: IN LEDGES STATE PARK (Lat: 41.997692,  Lng: -93.881044),  Route carried "on" structure: State lands road ,  Year Built: 1933,  Status: Posted for load,  Structure Length: 1.31m (4.30ft),  Features Intersected: PEASE CREEK,  Facility Carried by Structure: CANYON RD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 1.622,  Lanes on structure: 1,  Owner: State Park, Forest, or Reservation Agency,  Approaching Roadway Width: 6.3m (20.7ft),  Material/Design: Steel,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 12.2m (40.0ft),  Curb or Sidewalk Widths: Left: 0.0m,  Right: 1.2m (3.9ft),  Curb-To-Curb Width: 6.1m (20.0ft),  Out-to-Out Width: 8.0m (26.2ft)

Condition: Deck: Satisfactory,  Superstructure: Satisfactory,  Substructure: Good,  Channel: Good,  Operating Rating: 23.9 metric tons,  Method Used To Determine Operating Rating: Allowable Stress (AS),  Inventory Rating: 11.6 metric tons,  Method Used To Determine Inventory Rating: Allowable Stress (AS),  Structural Evaluation: Meets minimum limits,  Deck Geometry: Somewhat better than minimum adequacy,  Waterway Adequacy: Equal to present minimum criteria,  Approach Roadway Alignment: Equal to present minimum criteria,  Bridge Posting: Required (Relationship of Operating Rating to Maximum Legal Load: 0.1 - 9.9% below),  Designated Inspection Frequency: Every 24 months,  Inspection Date: March 2020,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Monolithic Concrete
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Structure Number: 69951,  Location: IN LEDGES STATE PARK (Lat: 41.995428,  Lng: -93.885428),  Route carried "on" structure: State lands road ,  Year Built: 1933,  Status: Posted for load,  Structure Length: 1.31m (4.30ft),  Features Intersected: PEASE CREEK,  Facility Carried by Structure: CANYON RD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 2.116,  Lanes on structure: 1,  Owner: State Park, Forest, or Reservation Agency,  Approaching Roadway Width: 6.3m (20.7ft),  Skew: 2 degrees,  Material/Design: Steel,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 12.2m (40.0ft),  Curb or Sidewalk Widths: Left: 1.2m (3.9ft),  Right: 0.0m,  Curb-To-Curb Width: 6.2m (20.3ft),  Out-to-Out Width: 8.0m (26.2ft)

Condition: Deck: Satisfactory,  Superstructure: Good,  Substructure: Good,  Channel: Good,  Operating Rating: 23.8 metric tons,  Method Used To Determine Operating Rating: Allowable Stress (AS),  Inventory Rating: 11.5 metric tons,  Method Used To Determine Inventory Rating: Allowable Stress (AS),  Structural Evaluation: Meets minimum limits,  Deck Geometry: Somewhat better than minimum adequacy,  Waterway Adequacy: Equal to present minimum criteria,  Approach Roadway Alignment: Somewhat better than minimum adequacy,  Bridge Posting: Required (Relationship of Operating Rating to Maximum Legal Load: 0.1 - 9.9% below),  Designated Inspection Frequency: Every 24 months,  Inspection Date: March 2020,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Bituminous
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Structure Number: 1534,  Location: AT JUNCTION WITH US 30 (Lat: 42.034381,  Lng: -93.815403),  Route carried "under" structure: US 30,  Year Built: 1968,  Structure Length: 0. m,  Average Daily Traffic: 11,400 (year 2020),  Truck Traffic: 9%,  Features Intersected: US 30,  Facility Carried by Structure: IA 17
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 220.979,  Lanes on structure: 2,  Lanes under structure: 4,  Material/Design: Prestressed concrete,  Design/Construction: Stringer/Multi-beam,  Length of Maximum Span: 25.0m (82.0ft)

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