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


  • National Bridge Inventory (NBI) Statistics
  • 19Number of bridges
  • 246ft / 74.5mTotal length
  • 5,325Total average daily traffic
  • 373Total average daily truck traffic
  • 5,325Total future (year 2039) average daily traffic
  • National Bridge Inventory (NBI) Registered Bridges for Keosauqua
  • No street view available for this location

New bridges in Keosauqua, IA - historical statistics
  • New bridges - historical statistics
  • 11910-1919
  • 31920-1929
  • 31950-1959
  • 31960-1969
  • 31970-1979
  • 21980-1989
  • 32000-2009
  • 12010-2019
Bridge Condition - Deck
  • Bridge Condition - Deck
  • 23.1%Good
  • 30.8%Satisfactory
  • 46.2%Fair
Bridge Condition - Superstructure
  • Bridge Condition - Superstructure
  • 7.7%Very good
  • 23.1%Good
  • 23.1%Satisfactory
  • 46.2%Fair
Bridge Condition - Substructure
  • Bridge Condition - Substructure
  • 23.1%Good
  • 15.4%Satisfactory
  • 38.5%Fair
  • 23.1%Poor
Bridge Condition - Channel
  • Bridge Condition - Channel
  • 5.3%Very good
  • 5.3%Good
  • 73.7%Satisfactory
  • 15.8%Fair
Bridge Condition - Culverts
  • Bridge Condition - Culverts
  • 16.7%Very good
  • 50.0%Satisfactory
  • 33.3%Fair
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Structure Number: 50181,  Location: 3.9 mi. N of jct. IA 2 (Lat: 40.727614,  Lng: -91.959567),  Route carried "on" structure: State highway 1,  Year Built: 2007,  Status: Open,  Structure Length: 20.88m (68.50ft),  Average Daily Traffic: 2,350 (year 2020),  Truck Traffic: 13%,  Average Future Daily Traffic: 2,350 (year 2041),  Design Load: HS 20,  Features Intersected: DES MOINES RIVER
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 6.206,  Lanes on structure: 2,  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: 3,  Length of Maximum Span: 79.2m (259.8ft),  Curb or Sidewalk Widths: Left: 3.2m (10.5ft),  Right: 1.6m (5.2ft),  Curb-To-Curb Width: 9.8m (32.2ft),  Out-to-Out Width: 15.9m (52.2ft)

Condition: Deck: Good,  Superstructure: Very good,  Substructure: Good,  Channel: Very good,  Operating Rating: 70.2 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 42.1 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Better than present minimum criteria,  Deck Geometry: Meets minimum limits,  Waterway Adequacy: Equal to present desirable criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 24 months,  Underwater Inspection Frequency: Every 72 months,  Inspection Date: August 2021,  Underwater Inspection Date: August 2017,  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: 327711,  Location: 068090404 (Lat: 40.714450,  Lng: -91.911025),  Route carried "on" structure: County highway ,  Year Built: 1988,  Status: Open,  Structure Length: 0.82m (2.69ft),  Average Daily Traffic: 70 (year 2014),  Average Future Daily Traffic: 70 (year 2041),  Design Load: HS 20,  Features Intersected: CREEK,  Facility Carried by Structure: LOCAL
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 8.504,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 6.7m (22.0ft),  Material/Design: Concrete continuous,  Design/Construction: Culvert,  Number Of Spans In Main Unit: 2,  Length of Maximum Span: 3.7m (12.1ft)

Condition: Channel: Satisfactory,  Culverts: Fair,  Operating Rating: 71.7 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 42.9 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Somewhat better than minimum adequacy,  Waterway Adequacy: Equal to present desirable criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Length Of Structure Improvement: 2.70m (8.86ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: July 2021,  Bridge Improvement Cost: $15,000,  Roadway Improvement Cost: $2,000
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Structure Number: 327721,  Location: 068090506 (Lat: 40.713247,  Lng: -91.920478),  Route carried "on" structure: County highway ,  Year Built: 1987,  Status: Open,  Structure Length: 0.76m (2.49ft),  Average Daily Traffic: 10 (year 2014),  Average Future Daily Traffic: 10 (year 2039),  Design Load: HS 20,  Features Intersected: STREAM,  Facility Carried by Structure: LOCAL
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 5.459,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 7.3m (24.0ft),  Material/Design: Concrete,  Design/Construction: Culvert,  Number Of Spans In Main Unit: 2,  Length of Maximum Span: 3.7m (12.1ft)

Condition: Channel: Satisfactory,  Culverts: Satisfactory,  Operating Rating: 71.7 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 42.9 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Equal to present minimum criteria,  Waterway Adequacy: Equal to present desirable criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Length Of Structure Improvement: 2.50m (8.20ft),  Designated Inspection Frequency: Every 48 months,  Inspection Date: July 2019,  Bridge Improvement Cost: $15,000,  Roadway Improvement Cost: $2,000
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Structure Number: 3278,  Location: 068091602 (Lat: 40.693975,  Lng: -91.910950),  Route carried "on" structure: County highway ,  Year Built: 1970,  Status: Open,  Structure Length: 0.94m (3.08ft),  Average Daily Traffic: 45 (year 2014),  Average Future Daily Traffic: 45 (year 2041),  Design Load: H 20,  Features Intersected: CREEK,  Facility Carried by Structure: LOCAL
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 6.230,  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: 9.1m (29.9ft),  Curb-To-Curb Width: 7.5m (24.6ft),  Out-to-Out Width: 7.6m (24.9ft)

Condition: Deck: Satisfactory,  Superstructure: Satisfactory,  Substructure: Fair,  Channel: Fair,  Operating Rating: 40.8 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: Somewhat better than minimum adequacy,  Deck Geometry: Equal to present minimum criteria,  Waterway Adequacy: Meets minimum limits,  Approach Roadway Alignment: Equal to present minimum criteria,  Length Of Structure Improvement: 3.10m (10.17ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: July 2021,  Bridge Improvement Cost: $15,000,  Roadway Improvement Cost: $2,000,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Gravel
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Structure Number: 32781,  Location: 068091708 (Lat: 40.692950,  Lng: -91.920533),  Route carried "on" structure: County highway ,  Year Built: 1968,  Status: Posted for load,  Structure Length: 1.04m (3.41ft),  Average Daily Traffic: 10 (year 2014),  Average Future Daily Traffic: 10 (year 2040),  Features Intersected: CREEK,  Facility Carried by Structure: LOCAL
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 3.204,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 6.7m (22.0ft),  Material/Design: Steel,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 10.1m (33.1ft),  Curb-To-Curb Width: 6.2m (20.3ft),  Out-to-Out Width: 6.3m (20.7ft)

Condition: Deck: Fair,  Superstructure: Fair,  Substructure: Fair,  Channel: Satisfactory,  Operating Rating: 28.4 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 17.1 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Somewhat better than minimum adequacy,  Deck Geometry: Somewhat better than minimum adequacy,  Waterway Adequacy: Somewhat better than minimum adequacy,  Approach Roadway Alignment: Equal to present minimum criteria,  Bridge Posting: Required (Relationship of Operating Rating to Maximum Legal Load: 10.0 - 19.9% below),  Length Of Structure Improvement: 5.50m (18.04ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: June 2020,  Bridge Improvement Cost: $132,000,  Roadway Improvement Cost: $13,000,  Deck Structure Type: Wood or Timber,  Wearing Surface/Protective System: Wearing Surface: Gravel
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Structure Number: 328501,  Location: 069091601 (Lat: 40.784039,  Lng: -91.908267),  Route carried "on" structure: County highway ,  Year Built: 2019,  Status: Open,  Structure Length: 1.04m (3.41ft),  Average Daily Traffic: 90 (year 2014),  Average Future Daily Traffic: 90 (year 2041),  Design Load: HL 93,  Features Intersected: ROCK CREEK,  Facility Carried by Structure: 180TH ST
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 4.646,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 8.5m (27.9ft),  Skew: 1 degrees,  Material/Design: Concrete,  Design/Construction: Culvert,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 3.0m (9.8ft)

Condition: Channel: Satisfactory,  Culverts: Very good,  Operating Rating: 65.4 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: 50.5 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: Equal to present desirable criteria,  Waterway Adequacy: Equal to present desirable criteria,  Approach Roadway Alignment: Better than present minimum criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: July 2021
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Structure Number: 32851,  Location: 069092103 (Lat: 40.767986,  Lng: -91.904211),  Route carried "on" structure: County highway ,  Year Built: 1953,  Status: Open,  Structure Length: 2.38m (7.81ft),  Average Daily Traffic: 70 (year 2018),  Average Future Daily Traffic: 70 (year 2041),  Design Load: H 15,  Features Intersected: ROCK CREEK,  Facility Carried by Structure: FM
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 20.221,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 8.5m (27.9ft),  Skew: 3 degrees,  Material/Design: Concrete continuous,  Design/Construction: Slab,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 8.8m (28.9ft),  Curb-To-Curb Width: 6.2m (20.3ft),  Out-to-Out Width: 6.8m (22.3ft)

Condition: Deck: Fair,  Superstructure: Fair,  Substructure: Fair,  Channel: Fair,  Operating Rating: 35.1 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 21.0 metric tons,  Method Used To Determine Inventory Rating: Field evaluation and documented engineering judgment,  Structural Evaluation: Somewhat better than minimum adequacy,  Deck Geometry: Somewhat better than minimum adequacy,  Waterway Adequacy: Equal to present minimum criteria,  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 2021,  Bridge Improvement Cost: $135,000,  Roadway Improvement Cost: $14,000,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Monolithic Concrete
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Structure Number: 32857,  Location: 069092903 (Lat: 40.747503,  Lng: -91.923111),  Route carried "on" structure: County highway ,  Year Built: 1971,  Year Reconstructed: 1999,  Status: Open,  Structure Length: 0.88m (2.89ft),  Average Daily Traffic: 45 (year 2014),  Average Future Daily Traffic: 45 (year 2040),  Features Intersected: SMALL STREAM,  Facility Carried by Structure: LOCAL
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 6.429,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 6.7m (22.0ft),  Material/Design: Steel,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 8.5m (27.9ft),  Curb-To-Curb Width: 6.1m (20.0ft),  Out-to-Out Width: 6.2m (20.3ft)

Condition: Deck: Satisfactory,  Superstructure: Fair,  Substructure: Satisfactory,  Channel: Fair,  Operating Rating: 41.8 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Inventory Rating: 24.9 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: Equal to present minimum criteria,  Approach Roadway Alignment: Better than present minimum criteria,  Length Of Structure Improvement: 5.10m (16.73ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: June 2020,  Bridge Improvement Cost: $122,000,  Roadway Improvement Cost: $12,000,  Deck Structure Type: Wood or Timber,  Wearing Surface/Protective System: Wearing Surface: Gravel
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Structure Number: 328651,  Location: 069100105 (Lat: 40.802119,  Lng: -91.966986),  Route carried "on" structure: County highway ,  Year Built: 2000,  Status: Open,  Structure Length: 5.46m (17.91ft),  Average Daily Traffic: 80 (year 2018),  Average Future Daily Traffic: 80 (year 2041),  Design Load: HS 20,  Features Intersected: LICK CREEK,  Facility Carried by Structure: FM
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.393,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 7.3m (24.0ft),  Material/Design: Prestressed concrete,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 19.8m (65.0ft),  Curb-To-Curb Width: 9.1m (29.9ft),  Out-to-Out Width: 10.0m (32.8ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Good,  Channel: Good,  Operating Rating: 82.9 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 38.2 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,  Waterway Adequacy: Equal to present desirable criteria,  Approach Roadway Alignment: Better than present minimum criteria,  Length Of Structure Improvement: 17.60m (57.74ft),  Designated Inspection Frequency: Every 48 months,  Inspection Date: May 2021,  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: 32867,  Location: 069100215 (Lat: 40.800469,  Lng: -91.980083),  Route carried "on" structure: County highway ,  Year Built: 1912,  Status: Posted for load,  Structure Length: 1.10m (3.61ft),  Average Daily Traffic: 25 (year 2014),  Average Future Daily Traffic: 25 (year 2040),  Features Intersected: TRIB DES MOINES R,  Facility Carried by Structure: LOCAL
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 16.417,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 6.7m (22.0ft),  Material/Design: Steel,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 10.7m (35.1ft),  Curb-To-Curb Width: 5.1m (16.7ft),  Out-to-Out Width: 5.3m (17.4ft)

Condition: Deck: Fair,  Superstructure: Fair,  Substructure: Poor,  Channel: Satisfactory,  Operating Rating: 22.4 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Inventory Rating: 13.3 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Structural Evaluation: Meets minimum limits,  Deck Geometry: High priority of corrective action,  Waterway Adequacy: Somewhat better than minimum adequacy,  Approach Roadway Alignment: Better than present minimum criteria,  Bridge Posting: Required (Relationship of Operating Rating to Maximum Legal Load: 30.0 - 39.9% below),  Length Of Structure Improvement: 5.50m (18.04ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: June 2020,  Bridge Improvement Cost: $125,000,  Roadway Improvement Cost: $13,000,  Deck Structure Type: Wood or Timber,  Wearing Surface/Protective System: Wearing Surface: Wood or Timber
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Structure Number: 32886,  Location: 069102106 (Lat: 40.761128,  Lng: -92.016139),  Route carried "on" structure: County highway ,  Year Built: 1958,  Status: Open,  Structure Length: 4.72m (15.49ft),  Average Daily Traffic: 110 (year 2018),  Average Future Daily Traffic: 110 (year 2041),  Design Load: H 15,  Features Intersected: CHEQUEST CREEK,  Facility Carried by Structure: FM
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 3.138,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 9.1m (29.9ft),  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: 7.3m (24.0ft),  Out-to-Out Width: 7.9m (25.9ft)

Condition: Deck: Fair,  Superstructure: Good,  Substructure: Satisfactory,  Channel: Satisfactory,  Operating Rating: 40.9 metric tons,  Method Used To Determine Operating Rating: Allowable Stress (AS),  Inventory Rating: 18.1 metric tons,  Method Used To Determine Inventory Rating: Allowable Stress (AS),  Structural Evaluation: Somewhat better than minimum adequacy,  Deck Geometry: Somewhat better than minimum adequacy,  Waterway Adequacy: Somewhat better than minimum adequacy,  Approach Roadway Alignment: Somewhat better than minimum adequacy,  Length Of Structure Improvement: 15.50m (50.85ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: May 2021,  Bridge Improvement Cost: $349,000,  Roadway Improvement Cost: $35,000,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Monolithic Concrete
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Structure Number: 32887,  Location: 069102308 (Lat: 40.756953,  Lng: -91.983961),  Route carried "on" structure: County highway ,  Year Built: 1920,  Status: Posted for load,  Structure Length: 1.31m (4.30ft),  Average Daily Traffic: 50 (year 2018),  Average Future Daily Traffic: 50 (year 2040),  Features Intersected: TRIB DES MOINES RIVER,  Facility Carried by Structure: FM
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 16.307,  Lanes on structure: 2,  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: 12.5m (41.0ft),  Curb-To-Curb Width: 6.0m (19.7ft),  Out-to-Out Width: 6.2m (20.3ft)

Condition: Deck: Fair,  Superstructure: Fair,  Substructure: Poor,  Channel: Satisfactory,  Operating Rating: 23.0 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: 18.1 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: Meets minimum limits,  Deck Geometry: Meets minimum limits,  Waterway Adequacy: Equal to present minimum criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Bridge Posting: Required (Relationship of Operating Rating to Maximum Legal Load: 10.0 - 19.9% below),  Length Of Structure Improvement: 6.30m (20.67ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: June 2020,  Bridge Improvement Cost: $151,000,  Roadway Improvement Cost: $15,000,  Deck Structure Type: Wood or Timber,  Wearing Surface/Protective System: Wearing Surface: Gravel
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Structure Number: 32888,  Location: 069102308 (Lat: 40.759075,  Lng: -91.982053),  Route carried "on" structure: County highway ,  Year Built: 1959,  Status: Posted for load,  Structure Length: 1.52m (4.99ft),  Average Daily Traffic: 50 (year 2018),  Average Future Daily Traffic: 50 (year 2040),  Features Intersected: TRIB DES MOINES RIVER,  Facility Carried by Structure: FM
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 16.592,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 8.5m (27.9ft),  Skew: 3 degrees,  Material/Design: Steel,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 14.9m (48.9ft),  Curb-To-Curb Width: 5.9m (19.4ft),  Out-to-Out Width: 6.0m (19.7ft)

Condition: Deck: Fair,  Superstructure: Fair,  Substructure: Fair,  Channel: Satisfactory,  Operating Rating: 27.3 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 16.3 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: Better than present minimum criteria,  Approach Roadway Alignment: Equal to present minimum criteria,  Length Of Structure Improvement: 7.20m (23.62ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: June 2020,  Bridge Improvement Cost: $173,000,  Roadway Improvement Cost: $17,000,  Deck Structure Type: Wood or Timber,  Wearing Surface/Protective System: Wearing Surface: Gravel
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Structure Number: 328891,  Location: 069102710 (Lat: 40.750000,  Lng: -91.991958),  Route carried "on" structure: County highway ,  Year Built: 2005,  Status: Open,  Structure Length: 5.36m (17.59ft),  Average Daily Traffic: 140 (year 2018),  Average Future Daily Traffic: 140 (year 2039),  Design Load: HS 20,  Features Intersected: CHEQUEST CREEK,  Facility Carried by Structure: LOCAL
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 7.491,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 8.2m (26.9ft),  Material/Design: Prestressed concrete,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 19.2m (63.0ft),  Curb-To-Curb Width: 7.5m (24.6ft),  Out-to-Out Width: 8.3m (27.2ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Good,  Channel: Satisfactory,  Operating Rating: 71.2 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 37.6 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,  Waterway Adequacy: Equal to present desirable criteria,  Approach Roadway Alignment: Somewhat better than minimum adequacy,  Length Of Structure Improvement: 17.60m (57.74ft),  Designated Inspection Frequency: Every 48 months,  Inspection Date: May 2019,  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: 32891,  Location: 069102725 (Lat: 40.746767,  Lng: -91.989914),  Route carried "on" structure: County highway ,  Year Built: 1960,  Status: Open,  Structure Length: 22.95m (75.30ft),  Average Daily Traffic: 1,390 (year 2018),  Average Future Daily Traffic: 1,390 (year 2040),  Design Load: H 20,  Features Intersected: DES MOINES RIVER,  Facility Carried by Structure: FM
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 17.690,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 9.1m (29.9ft),  Material/Design: Steel continuous,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 5,  Length of Maximum Span: 45.7m (149.9ft),  Curb-To-Curb Width: 7.9m (25.9ft),  Out-to-Out Width: 9.8m (32.2ft)

Condition: Deck: Satisfactory,  Superstructure: Satisfactory,  Substructure: Fair,  Channel: Satisfactory,  Operating Rating: 48.6 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Inventory Rating: 29.2 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: Meets minimum limits,  Waterway Adequacy: Equal to present desirable criteria,  Approach Roadway Alignment: Equal to present minimum criteria,  Length Of Structure Improvement: 100.00m (328.08ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: June 2020,  Bridge Improvement Cost: $2,850,000,  Roadway Improvement Cost: $285,000,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Monolithic Concrete
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Structure Number: 32892,  Location: 069102722 (Lat: 40.742453,  Lng: -91.996817),  Route carried "on" structure: County highway ,  Year Built: 1968,  Status: Open,  Structure Length: 0.64m (2.10ft),  Average Daily Traffic: 760 (year 2018),  Truck Traffic: 9%,  Average Future Daily Traffic: 760 (year 2041),  Design Load: H 20,  Features Intersected: CREEK,  Facility Carried by Structure: FM
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 16.898,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 9.1m (29.9ft),  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: Fair,  Operating Rating: 40.8 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: Somewhat better than minimum adequacy,  Waterway Adequacy: Meets minimum limits,  Approach Roadway Alignment: Equal to present desirable criteria,  Length Of Structure Improvement: 2.00m (6.56ft),  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: 36147,  Location: 069102103 (Lat: 40.762244,  Lng: -92.015819),  Route carried "on" structure: County highway ,  Year Built: 1975,  Status: Posted for load,  Structure Length: 1.22m (4.00ft),  Average Daily Traffic: 30 (year 2014),  Average Future Daily Traffic: 30 (year 2040),  Features Intersected: SMALL STREAM,  Facility Carried by Structure: LOCAL
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 2.131,  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: 11.9m (39.0ft),  Curb-To-Curb Width: 8.0m (26.2ft),  Out-to-Out Width: 8.0m (26.2ft)

Condition: Deck: Satisfactory,  Superstructure: Satisfactory,  Substructure: Poor,  Channel: Satisfactory,  Operating Rating: 19.8 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: 15.9 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: Meets minimum limits,  Deck Geometry: Equal to present minimum criteria,  Waterway Adequacy: Better than present minimum criteria,  Approach Roadway Alignment: Somewhat better than minimum adequacy,  Bridge Posting: Required (Relationship of Operating Rating to Maximum Legal Load: 10.0 - 19.9% below),  Length Of Structure Improvement: 6.20m (20.34ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: July 2020,  Bridge Improvement Cost: $149,000,  Roadway Improvement Cost: $15,000,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Monolithic Concrete
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Structure Number: 69939,  Location: 0.8 mi. S of Jct. IA 1 (Lat: 40.716964,  Lng: -91.966336),  Route carried "on" structure: State lands road ,  Year Built: 1920,  Status: Open,  Structure Length: 0.79m (2.59ft),  Features Intersected: STREAM,  Facility Carried by Structure: LAC-KEO ST PARK
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 1.473,  Lanes on structure: 2,  Owner: State Highway Agency,  Approaching Roadway Width: 7.3m (24.0ft),  Material/Design: Concrete,  Design/Construction: Culvert,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 7.9m (25.9ft),  Curb-To-Curb Width: 7.4m (24.3ft),  Out-to-Out Width: 8.8m (28.9ft)

Condition: Channel: Satisfactory,  Culverts: Satisfactory,  Operating Rating: 20.1 metric tons,  Method Used To Determine Operating Rating: Field evaluation and documented engineering judgment,  Inventory Rating: 20.1 metric tons,  Method Used To Determine Inventory Rating: Field evaluation and documented engineering judgment,  Structural Evaluation: Somewhat better than minimum adequacy,  Deck Geometry: Equal to present minimum criteria,  Waterway Adequacy: Better than present minimum criteria,  Approach Roadway Alignment: Equal to present minimum criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: May 2021
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Structure Number: 69979,  Location: 2.6 mi. S of Iowa 1 (Lat: 40.717758,  Lng: -91.990236),  Route carried "on" structure: State lands road ,  Year Built: 1920,  Year Reconstructed: 1995,  Status: Open,  Structure Length: 0.73m (2.40ft),  Design Load: HS 20,  Features Intersected: STREAM,  Facility Carried by Structure: LAC-KEO ST PARK
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.008,  Lanes on structure: 2,  Owner: State Highway Agency,  Approaching Roadway Width: 6.1m (20.0ft),  Material/Design: Concrete,  Design/Construction: Culvert,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 7.3m (24.0ft),  Curb-To-Curb Width: 5.8m (19.0ft),  Out-to-Out Width: 6.8m (22.3ft)

Condition: Channel: Satisfactory,  Culverts: Satisfactory,  Operating Rating: 54.4 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 minimum criteria,  Deck Geometry: Meets minimum limits,  Waterway Adequacy: Better than present minimum criteria,  Approach Roadway Alignment: Somewhat better than minimum adequacy,  Designated Inspection Frequency: Every 24 months,  Inspection Date: April 2021
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