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


  • National Bridge Inventory (NBI) Statistics
  • 13Number of bridges
  • 135ft / 40.8mTotal length
  • 35,525Total average daily traffic
  • 7,735Total average daily truck traffic
  • National Bridge Inventory (NBI) Registered Bridges for Delaware
  • No street view available for this location

New bridges in Delaware, IA - historical statistics
  • New bridges - historical statistics
  • 21960-1969
  • 61970-1979
  • 31980-1989
  • 11990-1999
  • 12010-2019
Average Bridge Daily Traffic in Delaware, IA
Average Bridge Truck Traffic in Delaware, IA
Bridge Condition - Deck
  • Bridge Condition - Deck
  • 77.8%Good
  • 11.1%Satisfactory
  • 11.1%Fair
Bridge Condition - Superstructure
  • Bridge Condition - Superstructure
  • 11.1%Very good
  • 77.8%Good
  • 11.1%Fair
Bridge Condition - Substructure
  • Bridge Condition - Substructure
  • 77.8%Good
  • 11.1%Fair
  • 11.1%Poor
Bridge Condition - Channel
  • Bridge Condition - Channel
  • 33.3%Good
  • 66.7%Satisfactory
Bridge Condition - Culverts
  • Bridge Condition - Culverts
  • 50.0%Very good
  • 50.0%Good
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Structure Number: 23081,  Location: 0.3 mi. N of Jct. U.S. 20 (Lat: 42.476789,  Lng: -91.345161),  Route carried "on" structure: State highway 38,  Year Built: 1988,  Status: Open,  Structure Length: 5.46m (17.91ft),  Average Daily Traffic: 1,820 (year 2020),  Truck Traffic: 13%,  Average Future Daily Traffic: 1,820 (year 2042),  Design Load: HS 20,  Features Intersected: CC RR
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 141.083,  Lanes on structure: 2,  Base Highway Network: Yes,  Owner: State Highway Agency,  Approaching Roadway Width: 11.0m (36.1ft),  Material/Design: Prestressed concrete,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 25.0m (82.0ft),  Curb-To-Curb Width: 11.0m (36.1ft),  Out-to-Out Width: 11.9m (39.0ft)

Condition: Deck: Good,  Superstructure: Very good,  Substructure: Good,  Operating Rating: 66.8 metric tons,  Method Used To Determine Operating Rating: Allowable Stress (AS),  Inventory Rating: 37.3 metric tons,  Method Used To Determine Inventory Rating: Allowable Stress (AS),  Structural Evaluation: Better than present minimum criteria,  Deck Geometry: Equal to present minimum criteria,  Underclear: Equal to present desirable criteria,  Approach Roadway Alignment: Somewhat better than minimum adequacy,  Designated Inspection Frequency: Every 24 months,  Inspection Date: Febuary 2022,  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: 2309,  Location: 0.6 MI E OF IOWA 38 (Lat: 42.470219,  Lng: -91.332381),  Route carried "on" structure: US 20,  Year Built: 1963,  Year Reconstructed: 2002,  Status: Open,  Structure Length: 0.94m (3.08ft),  Average Daily Traffic: 7,900 (year 2020),  Truck Traffic: 22%,  Average Future Daily Traffic: 7,900 (year 2041),  Design Load: HS 20,  Features Intersected: STREAM
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 423.193,  Lanes on structure: 4,  Base Highway Network: Yes,  Owner: State Highway Agency,  Approaching Roadway Width: 24.4m (80.1ft),  Skew: 20 degrees,  Material/Design: Concrete continuous,  Design/Construction: Culvert,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 3.0m (9.8ft)

Condition: Channel: Satisfactory,  Culverts: Good,  Operating Rating: 44.1 metric tons,  Method Used To Determine Operating Rating: Field evaluation and documented engineering judgment,  Inventory Rating: 32.7 metric tons,  Method Used To Determine Inventory Rating: Field evaluation and documented engineering judgment,  Structural Evaluation: Better than 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: November 2021
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Structure Number: 140641,  Location: 088040306 (Lat: 42.463094,  Lng: -91.304433),  Route carried "on" structure: County highway ,  Year Built: 1996,  Status: Open,  Structure Length: 1.10m (3.61ft),  Average Daily Traffic: 40 (year 2017),  Average Future Daily Traffic: 40 (year 2040),  Design Load: HS 20,  Features Intersected: SMALL STREAM,  Facility Carried by Structure: LOC 225 ST
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.961,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 7.9m (25.9ft),  Material/Design: Prestressed concrete,  Design/Construction: Tee Beam,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 9.8m (32.2ft),  Curb-To-Curb Width: 7.9m (25.9ft),  Out-to-Out Width: 8.5m (27.9ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Good,  Channel: Satisfactory,  Operating Rating: 28.5 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: 22.0 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 minimum criteria,  Deck Geometry: Equal to present minimum criteria,  Waterway Adequacy: Equal to present minimum criteria,  Approach Roadway Alignment: Somewhat better than minimum adequacy,  Designated Inspection Frequency: Every 24 months,  Inspection Date: October 2020,  Deck Structure Type: Concrete Precast Panels,  Wearing Surface/Protective System: Wearing Surface: Monolithic Concrete
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Structure Number: 140651,  Location: 088040306 (Lat: 42.466192,  Lng: -91.302325),  Route carried "on" structure: County highway ,  Year Built: 1984,  Status: Open,  Structure Length: 1.10m (3.61ft),  Average Daily Traffic: 40 (year 2017),  Average Future Daily Traffic: 40 (year 2042),  Design Load: H 20,  Features Intersected: SMALL STREAM,  Facility Carried by Structure: LOC 225 ST
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 1.373,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 7.3m (24.0ft),  Skew: 3 degrees,  Material/Design: Prestressed concrete,  Design/Construction: Tee Beam,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 10.4m (34.1ft),  Curb-To-Curb Width: 6.7m (22.0ft),  Out-to-Out Width: 7.3m (24.0ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Good,  Channel: Satisfactory,  Operating Rating: 41.8 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: Better than 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,  Designated Inspection Frequency: Every 24 months,  Inspection Date: January 2022,  Deck Structure Type: Concrete Precast Panels,  Wearing Surface/Protective System: Wearing Surface: Monolithic Concrete
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Structure Number: 141561,  Location: 089041603 (Lat: 42.521231,  Lng: -91.314481),  Route carried "on" structure: County highway ,  Year Built: 1986,  Status: Open,  Structure Length: 2.19m (7.19ft),  Average Daily Traffic: 20 (year 2017),  Average Future Daily Traffic: 20 (year 2040),  Design Load: HS 20,  Features Intersected: PLUM CREEK,  Facility Carried by Structure: LOCAL 185 ST
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 3.376,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 7.3m (24.0ft),  Skew: 1 degrees,  Material/Design: Prestressed concrete,  Design/Construction: Tee Beam,  Number Of Spans In Main Unit: 2,  Length of Maximum Span: 10.1m (33.1ft),  Curb-To-Curb Width: 7.2m (23.6ft),  Out-to-Out Width: 7.6m (24.9ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Fair,  Channel: Satisfactory,  Operating Rating: 41.8 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: 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 minimum criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: May 2020,  Deck Structure Type: Concrete Precast Panels,  Wearing Surface/Protective System: Wearing Surface: Monolithic Concrete
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Structure Number: 14162,  Location: 089043102 (Lat: 42.474628,  Lng: -91.371422),  Route carried "on" structure: County highway ,  Year Built: 1967,  Status: Posted for load,  Structure Length: 0.73m (2.40ft),  Average Daily Traffic: 25 (year 2017),  Truck Traffic: 32%,  Average Future Daily Traffic: 25 (year 2040),  Features Intersected: STREAM,  Facility Carried by Structure: LOCAL 220 AVE
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 19.372,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 7.3m (24.0ft),  Material/Design: Steel,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 6.7m (22.0ft),  Curb-To-Curb Width: 7.0m (23.0ft),  Out-to-Out Width: 7.3m (24.0ft)

Condition: Deck: Good,  Superstructure: Fair,  Substructure: Poor,  Channel: Good,  Operating Rating: 9.1 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: 7.1 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: High priority of corrective action,  Deck Geometry: Somewhat better than minimum adequacy,  Waterway Adequacy: Better than present minimum criteria,  Approach Roadway Alignment: Better than present minimum criteria,  Bridge Posting: Required (Relationship of Operating Rating to Maximum Legal Load: > 39.9% below),  Length Of Structure Improvement: 4.50m (14.76ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: May 2020,  Bridge Improvement Cost: $45,000,  Roadway Improvement Cost: $10,000,  Deck Structure Type: Wood or Timber,  Wearing Surface/Protective System: Wearing Surface: Wood or Timber
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Structure Number: 365995,  Location: 89 04 30 01 (Lat: 42.499058,  Lng: -91.365589),  Route carried "on" structure: County highway ,  Year Built: 2013,  Status: Open,  Structure Length: 0.73m (2.40ft),  Average Daily Traffic: 10 (year 2017),  Average Future Daily Traffic: 10 (year 2040),  Design Load: HL 93,  Features Intersected: SMALL STREAM,  Facility Carried by Structure: 200TH ST
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 4.505,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 8.5m (27.9ft),  Material/Design: Concrete,  Design/Construction: Culvert,  Number Of Spans In Main Unit: 2,  Length of Maximum Span: 3.7m (12.1ft)

Condition: Channel: Good,  Culverts: 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,  Waterway Adequacy: Better than present minimum criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: December 2020
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Structure Number: 60204,  Location: 0.4 MI W OF JCT IOWA #38 (Lat: 42.469183,  Lng: -91.352861),  Route carried "on" structure: US 20,  Year Built: 1974,  Status: Open,  Structure Length: 5.85m (19.19ft),  Average Daily Traffic: 4,100 (year 2020),  Truck Traffic: 23%,  Average Future Daily Traffic: 4,100 (year 2041),  Design Load: HS 20,  Features Intersected: ABANDON RR
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 421.505,  Lanes on structure: 2,  Base Highway Network: Yes,  Owner: State Highway Agency,  Approaching Roadway Width: 12.2m (40.0ft),  Skew: 2 degrees,  Material/Design: Prestressed concrete,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 21.0m (68.9ft),  Curb-To-Curb Width: 12.3m (40.4ft),  Out-to-Out Width: 13.1m (43.0ft)

Condition: Deck: Fair,  Superstructure: Good,  Substructure: Good,  Operating Rating: 70.1 metric tons,  Method Used To Determine Operating Rating: Allowable Stress (AS),  Inventory Rating: 47.6 metric tons,  Method Used To Determine Inventory Rating: Allowable Stress (AS),  Structural Evaluation: Better than present minimum criteria,  Deck Geometry: Better than present minimum criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: November 2021,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Monolithic Concrete
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Structure Number: 602045,  Location: 0.4 mi. W of Jct. IA 38 (Lat: 42.469467,  Lng: -91.352086),  Route carried "on" structure: US 20,  Year Built: 1973,  Status: Open,  Structure Length: 5.85m (19.19ft),  Average Daily Traffic: 4,100 (year 2020),  Truck Traffic: 23%,  Average Future Daily Traffic: 4,100 (year 2041),  Design Load: HS 20,  Features Intersected: ABANDON RR
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 61.619,  Lanes on structure: 2,  Owner: State Highway Agency,  Approaching Roadway Width: 12.2m (40.0ft),  Skew: 2 degrees,  Material/Design: Prestressed concrete,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 21.0m (68.9ft),  Curb-To-Curb Width: 12.3m (40.4ft),  Out-to-Out Width: 13.2m (43.3ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Good,  Operating Rating: 78.2 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 33.8 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Better than present minimum criteria,  Deck Geometry: Better than present minimum criteria,  Approach Roadway Alignment: Better than present minimum criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: November 2021,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Low Slump Concrete
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Structure Number: 602047,  Location: At jct. US 20 (Lat: 42.468531,  Lng: -91.363556),  Route carried "on" structure: County highway ,  Year Built: 1973,  Status: Open,  Structure Length: 8.17m (26.80ft),  Average Daily Traffic: 60 (year 2017),  Average Future Daily Traffic: 60 (year 2041),  Design Load: H 20,  Features Intersected: US 20,  Facility Carried by Structure: 220TH AVE
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 18.752,  Lanes on structure: 2,  Lanes under structure: 4,  Owner: State Highway Agency,  Approaching Roadway Width: 10.4m (34.1ft),  Material/Design: Prestressed concrete,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 4,  Length of Maximum Span: 26.5m (86.9ft),  Curb-To-Curb Width: 9.3m (30.5ft),  Out-to-Out Width: 10.3m (33.8ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Good,  Operating Rating: 67.6 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 24.2 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: April 2021,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Monolithic Concrete
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Structure Number: 60205,  Location: AT THE JCT. OF US 20 (Lat: 42.469300,  Lng: -91.345067),  Route carried "on" structure: State highway 38,  Year Built: 1974,  Status: Open,  Structure Length: 8.69m (28.51ft),  Average Daily Traffic: 1,910 (year 2020),  Truck Traffic: 12%,  Average Future Daily Traffic: 1,910 (year 2041),  Design Load: HS 20,  Features Intersected: US 20
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 140.251,  Lanes on structure: 2,  Lanes under structure: 5,  Base Highway Network: Yes,  Owner: State Highway Agency,  Approaching Roadway Width: 13.4m (44.0ft),  Material/Design: Steel continuous,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 4,  Length of Maximum Span: 27.1m (88.9ft),  Curb-To-Curb Width: 9.8m (32.2ft),  Out-to-Out Width: 10.9m (35.8ft)

Condition: Deck: Satisfactory,  Superstructure: Good,  Substructure: Good,  Operating Rating: 48.4 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 29.1 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Better than present minimum criteria,  Deck Geometry: Somewhat better than minimum adequacy,  Underclear: Superior to present desirable criteria,  Approach Roadway Alignment: Equal to present minimum criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: May 2021,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Low Slump Concrete
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Structure Number: 602047,  Location: At jct. US 20 (Lat: 42.468531,  Lng: -91.363556),  Route carried "under" structure: US 20,  Year Built: 1973,  Structure Length: 0. m,  Average Daily Traffic: 8,200 (year 2020),  Truck Traffic: 23%,  Features Intersected: US 20
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 420.618,  Lanes on structure: 2,  Lanes under structure: 4,  Material/Design: Prestressed concrete,  Design/Construction: Stringer/Multi-beam,  Length of Maximum Span: 26.5m (86.9ft)

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Structure Number: 60205,  Location: AT THE JCT. OF US 20 (Lat: 42.469300,  Lng: -91.345067),  Route carried "under" structure: US 20,  Year Built: 1974,  Structure Length: 0. m,  Average Daily Traffic: 7,300 (year 2020),  Truck Traffic: 24%,  Features Intersected: US 20,  Facility Carried by Structure: IA 38
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 422.144,  Lanes on structure: 2,  Lanes under structure: 5,  Material/Design: Steel continuous,  Design/Construction: Stringer/Multi-beam,  Length of Maximum Span: 27.1m (88.9ft)

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