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


  • National Bridge Inventory (NBI) Statistics
  • 18Number of bridges
  • 125ft / 37.8mTotal length
  • 5,890Total average daily traffic
  • 412Total average daily truck traffic
  • 5,890Total future (year 2039) average daily traffic
  • National Bridge Inventory (NBI) Registered Bridges for Grundy Center
  • No street view available for this location

New bridges in Grundy Center, IA - historical statistics
  • New bridges - historical statistics
  • 41950-1959
  • 21960-1969
  • 71970-1979
  • 21980-1989
  • 21990-1999
  • 12000-2009
Average Bridge Truck Traffic in Grundy Center, IA
Bridge Condition - Deck
  • Bridge Condition - Deck
  • 15.4%Very good
  • 23.1%Good
  • 23.1%Satisfactory
  • 15.4%Fair
  • 15.4%Poor
  • 7.7%Serious
Bridge Condition - Superstructure
  • Bridge Condition - Superstructure
  • 15.4%Very good
  • 23.1%Good
  • 30.8%Satisfactory
  • 30.8%Fair
Bridge Condition - Substructure
  • Bridge Condition - Substructure
  • 7.7%Very good
  • 46.2%Good
  • 15.4%Fair
  • 7.7%Poor
  • 23.1%Serious
Bridge Condition - Channel
  • Bridge Condition - Channel
  • 5.6%Very good
  • 44.4%Good
  • 38.9%Satisfactory
  • 11.1%Fair
Bridge Condition - Culverts
  • Bridge Condition - Culverts
  • 20.0%Satisfactory
  • 20.0%Fair
  • 20.0%Poor
  • 40.0%Serious
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Structure Number: 25901,  Location: 0.3 MI. E OF JCT. SR T45 (Lat: 42.359636,  Lng: -92.752664),  Route carried "on" structure: State highway 175,  Year Built: 1977,  Status: Open,  Structure Length: 2.83m (9.28ft),  Average Daily Traffic: 1,760 (year 2020),  Truck Traffic: 13%,  Average Future Daily Traffic: 1,760 (year 2041),  Design Load: HS 20,  Features Intersected: MINNEHAHA CREEK
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 331.174,  Lanes on structure: 2,  Base Highway Network: Yes,  Owner: State Highway Agency,  Approaching Roadway Width: 10.4m (34.1ft),  Material/Design: Concrete continuous,  Design/Construction: Slab,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 10.7m (35.1ft),  Curb-To-Curb Width: 12.2m (40.0ft),  Out-to-Out Width: 13.2m (43.3ft)

Condition: Deck: Satisfactory,  Superstructure: Satisfactory,  Substructure: Good,  Channel: Good,  Operating Rating: 42.2 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 32.6 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,  Waterway Adequacy: Equal to present desirable criteria,  Approach Roadway Alignment: Better than present minimum criteria,  Designated Inspection Frequency: Every 24 months,  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: 163431,  Location: 086170201 (Lat: 42.296592,  Lng: -92.788819),  Route carried "on" structure: County highway ,  Year Built: 1976,  Status: Open,  Structure Length: 0.98m (3.22ft),  Average Daily Traffic: 35 (year 2017),  Average Future Daily Traffic: 35 (year 2040),  Design Load: H 20,  Features Intersected: LITTLE WOLF CREEK,  Facility Carried by Structure: LOCAL
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 17.579,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 6.7m (22.0ft),  Skew: 3 degrees,  Material/Design: Concrete,  Design/Construction: Slab,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 9.1m (29.9ft),  Curb or Sidewalk Widths: Left: 0.3m (1.0ft),  Right: 0.3m (1.0ft),  Curb-To-Curb Width: 8.5m (27.9ft),  Out-to-Out Width: 9.1m (29.9ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Fair,  Channel: Satisfactory,  Operating Rating: 55.3 metric tons,  Method Used To Determine Operating Rating: Allowable Stress (AS),  Inventory Rating: 30.8 metric tons,  Method Used To Determine Inventory Rating: Allowable Stress (AS),  Structural Evaluation: Somewhat better than minimum adequacy,  Deck Geometry: Better than present minimum criteria,  Waterway Adequacy: Better than present minimum criteria,  Approach Roadway Alignment: Better than present minimum criteria,  Length Of Structure Improvement: 3.20m (10.50ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: March 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: 164111,  Location: 087160403 (Lat: 42.376386,  Lng: -92.716875),  Route carried "on" structure: County highway ,  Year Built: 1971,  Status: Posted for load,  Structure Length: 1.19m (3.90ft),  Average Daily Traffic: 35 (year 2017),  Average Future Daily Traffic: 35 (year 2041),  Features Intersected: BRANCH BLACK HAWK CREEK,  Facility Carried by Structure: LOCAL ROAD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 12.706,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 6.1m (20.0ft),  Material/Design: Wood or Timber,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 2,  Length of Maximum Span: 5.8m (19.0ft),  Curb-To-Curb Width: 7.2m (23.6ft),  Out-to-Out Width: 7.3m (24.0ft)

Condition: Deck: Fair,  Superstructure: Fair,  Substructure: Serious,  Channel: Good,  Operating Rating: 10.1 metric tons,  Method Used To Determine Operating Rating: Allowable Stress (AS),  Inventory Rating: 7.3 metric tons,  Method Used To Determine Inventory Rating: Allowable Stress (AS),  Structural Evaluation: High priority of replacement,  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: 6.00m (19.69ft),  Designated Inspection Frequency: Every 12 months,  Inspection Date: April 2021,  Bridge Improvement Cost: $130,000,  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: 164122,  Location: 087160705 (Lat: 42.362050,  Lng: -92.749867),  Route carried "on" structure: County highway ,  Year Built: 1976,  Year Reconstructed: 2007,  Status: Posted for load-capacity,  Structure Length: 1.89m (6.20ft),  Average Daily Traffic: 200 (year 2017),  Average Future Daily Traffic: 200 (year 2040),  Design Load: HS 20,  Features Intersected: BLACKHAWK CREEK,  Facility Carried by Structure: LOCAL
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.517,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 6.7m (22.0ft),  Material/Design: Prestressed concrete,  Design/Construction: Tee Beam,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 18.3m (60.0ft),  Curb-To-Curb Width: 5.3m (17.4ft),  Out-to-Out Width: 5.5m (18.0ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Good,  Channel: Good,  Operating Rating: 67.6 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 40.5 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Better than present minimum criteria,  Deck Geometry: High priority of replacement,  Waterway Adequacy: Better than present minimum criteria,  Approach Roadway Alignment: Equal to present minimum criteria,  Length Of Structure Improvement: 10.00m (32.81ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: March 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: 164131,  Location: 087160704 (Lat: 42.355331,  Lng: -92.758597),  Route carried "on" structure: County highway ,  Year Built: 1986,  Status: Open,  Structure Length: 3.14m (10.30ft),  Average Daily Traffic: 220 (year 2021),  Average Future Daily Traffic: 220 (year 2040),  Design Load: H 20,  Features Intersected: FORK OF MINNEHAHA CREEK,  Facility Carried by Structure: FM
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 6.511,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 6.7m (22.0ft),  Skew: 3 degrees,  Material/Design: Concrete continuous,  Design/Construction: Slab,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 11.9m (39.0ft),  Curb-To-Curb Width: 9.1m (29.9ft),  Out-to-Out Width: 10.1m (33.1ft)

Condition: Deck: Satisfactory,  Superstructure: Satisfactory,  Substructure: Good,  Channel: Good,  Operating Rating: 49.9 metric tons,  Method Used To Determine Operating Rating: Allowable Stress (AS),  Inventory Rating: 30.8 metric tons,  Method Used To Determine Inventory Rating: Allowable Stress (AS),  Structural Evaluation: Equal to present minimum criteria,  Deck Geometry: Equal to present minimum criteria,  Waterway Adequacy: Equal to present desirable criteria,  Approach Roadway Alignment: Better than present minimum criteria,  Length Of Structure Improvement: 10.30m (33.79ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: March 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: 164141,  Location: 087160902 (Lat: 42.361594,  Lng: -92.729336),  Route carried "on" structure: County highway ,  Year Built: 2002,  Status: Open,  Structure Length: 5.46m (17.91ft),  Average Daily Traffic: 30 (year 2017),  Average Future Daily Traffic: 30 (year 2039),  Design Load: HS 20,  Features Intersected: BLACKHAWK CREEK,  Facility Carried by Structure: LOCAL
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 7.194,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 6.7m (22.0ft),  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: 9.3m (30.5ft),  Out-to-Out Width: 10.1m (33.1ft)

Condition: Deck: Very good,  Superstructure: Very good,  Substructure: Very good,  Channel: Good,  Operating Rating: 70.9 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 42.5 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Equal to present desirable criteria,  Deck Geometry: Better than present minimum criteria,  Waterway Adequacy: Equal to present desirable criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Length Of Structure Improvement: 17.90m (58.73ft),  Designated Inspection Frequency: Every 48 months,  Inspection Date: April 2019,  Bridge Improvement Cost: $17,000,  Roadway Improvement Cost: $5,000,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Monolithic Concrete
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Structure Number: 164191,  Location: 087161802 (Lat: 42.351492,  Lng: -92.768264),  Route carried "on" structure: County highway ,  Year Built: 1994,  Status: Open,  Structure Length: 0.88m (2.89ft),  Average Daily Traffic: 70 (year 2021),  Truck Traffic: 19%,  Average Future Daily Traffic: 70 (year 2040),  Design Load: HS 20,  Features Intersected: BRANCH BLACK HAWK CREEK,  Facility Carried by Structure: LOCAL
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 4.488,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 8.5m (27.9ft),  Skew: 3 degrees,  Material/Design: Concrete continuous,  Design/Construction: Culvert,  Number Of Spans In Main Unit: 2,  Length of Maximum Span: 4.3m (14.1ft)

Condition: Channel: Very good,  Culverts: Satisfactory,  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 minimum criteria,  Waterway Adequacy: Equal to present desirable criteria,  Approach Roadway Alignment: Better than present minimum criteria,  Length Of Structure Improvement: 2.90m (9.51ft),  Designated Inspection Frequency: Every 48 months,  Inspection Date: March 2020,  Bridge Improvement Cost: $15,000,  Roadway Improvement Cost: $2,000
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Structure Number: 164201,  Location: 087162102 (Lat: 42.336253,  Lng: -92.729294),  Route carried "on" structure: County highway ,  Year Built: 1971,  Status: Posted for load,  Structure Length: 1.22m (4.00ft),  Average Daily Traffic: 30 (year 2017),  Average Future Daily Traffic: 30 (year 2040),  Features Intersected: MUNNS CREEK,  Facility Carried by Structure: LOCAL ROAD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 4.379,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 6.7m (22.0ft),  Material/Design: Wood or Timber,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 2,  Length of Maximum Span: 5.8m (19.0ft),  Curb-To-Curb Width: 7.1m (23.3ft),  Out-to-Out Width: 7.3m (24.0ft)

Condition: Deck: Poor,  Superstructure: Fair,  Substructure: Poor,  Channel: Satisfactory,  Operating Rating: 29.9 metric tons,  Method Used To Determine Operating Rating: Allowable Stress (AS),  Inventory Rating: 21.8 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: Better than present minimum criteria,  Approach Roadway Alignment: Better than present minimum criteria,  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: March 2020,  Bridge Improvement Cost: $134,000,  Roadway Improvement Cost: $13,000,  Deck Structure Type: Wood or Timber,  Wearing Surface/Protective System: Wearing Surface: Bituminous
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Structure Number: 16425,  Location: 087163003 (Lat: 42.325631,  Lng: -92.753667),  Route carried "on" structure: County highway ,  Year Built: 1957,  Status: Open,  Structure Length: 0.73m (2.40ft),  Average Daily Traffic: 20 (year 2017),  Truck Traffic: 30%,  Average Future Daily Traffic: 20 (year 2040),  Features Intersected: MUNNS CREEK,  Facility Carried by Structure: LOCAL
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 18.055,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 6.7m (22.0ft),  Skew: 3 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: Poor,  Operating Rating: 77.9 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 46.7 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Meets minimum limits,  Waterway Adequacy: Somewhat better than minimum adequacy,  Approach Roadway Alignment: Better than present minimum criteria,  Length Of Structure Improvement: 4.40m (14.44ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: March 2020,  Bridge Improvement Cost: $95,000,  Roadway Improvement Cost: $10,000
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Structure Number: 16426,  Location: 087163004 (Lat: 42.320686,  Lng: -92.758272),  Route carried "on" structure: County highway ,  Year Built: 1955,  Status: Open,  Structure Length: 0.91m (2.99ft),  Average Daily Traffic: 220 (year 2021),  Average Future Daily Traffic: 220 (year 2041),  Design Load: H 20,  Features Intersected: MUNNS CREEK,  Facility Carried by Structure: NICKEL AVE
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 2.663,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 6.7m (22.0ft),  Skew: 4 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: Serious,  Operating Rating: 69.3 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 41.5 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: High priority of corrective action,  Waterway Adequacy: Better than present minimum criteria,  Approach Roadway Alignment: Better than present minimum criteria,  Length Of Structure Improvement: 5.00m (16.40ft),  Designated Inspection Frequency: Every 12 months,  Inspection Date: April 2021,  Bridge Improvement Cost: $135,000,  Roadway Improvement Cost: $13,000
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Structure Number: 16432,  Location: 087170303 (Lat: 42.376056,  Lng: -92.814819),  Route carried "on" structure: County highway ,  Year Built: 1955,  Status: Posted for load,  Structure Length: 3.44m (11.29ft),  Average Daily Traffic: 35 (year 2017),  Truck Traffic: 20%,  Average Future Daily Traffic: 35 (year 2041),  Features Intersected: BRANCH BLACKHAWK CREEK,  Facility Carried by Structure: LOCAL
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 6.246,  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: 2,  Length of Maximum Span: 16.8m (55.1ft),  Curb or Sidewalk Widths: Left: 0.3m (1.0ft),  Right: 0.3m (1.0ft),  Curb-To-Curb Width: 6.1m (20.0ft),  Out-to-Out Width: 6.7m (22.0ft)

Condition: Deck: Poor,  Superstructure: Satisfactory,  Substructure: Serious,  Channel: Fair,  Operating Rating: 10.6 metric tons,  Method Used To Determine Operating Rating: Allowable Stress (AS),  Structural Evaluation: High priority of replacement,  Deck Geometry: Somewhat better than minimum adequacy,  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: > 39.9% below),  Length Of Structure Improvement: 15.00m (49.21ft),  Designated Inspection Frequency: Every 12 months,  Inspection Date: April 2021,  Bridge Improvement Cost: $360,000,  Roadway Improvement Cost: $36,000,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Monolithic Concrete
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Structure Number: 164351,  Location: 087170903 (Lat: 42.363997,  Lng: -92.836828),  Route carried "on" structure: County highway ,  Year Built: 1978,  Status: Open,  Structure Length: 3.87m (12.70ft),  Average Daily Traffic: 90 (year 2017),  Average Future Daily Traffic: 90 (year 2040),  Design Load: H 20,  Features Intersected: BR BLACKHAWK CREEK,  Facility Carried by Structure: LOCAL
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 14.062,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 6.7m (22.0ft),  Skew: 1 degrees,  Material/Design: Concrete continuous,  Design/Construction: Slab,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 14.9m (48.9ft),  Curb or Sidewalk Widths: Left: 0.3m (1.0ft),  Right: 0.3m (1.0ft),  Curb-To-Curb Width: 9.1m (29.9ft),  Out-to-Out Width: 9.1m (29.9ft)

Condition: Deck: Satisfactory,  Superstructure: Satisfactory,  Substructure: Good,  Channel: Good,  Operating Rating: 51.7 metric tons,  Method Used To Determine Operating Rating: Allowable Stress (AS),  Inventory Rating: 29.9 metric tons,  Method Used To Determine Inventory Rating: Allowable Stress (AS),  Structural Evaluation: Equal to present minimum criteria,  Deck Geometry: Better than present minimum criteria,  Waterway Adequacy: Equal to present desirable criteria,  Approach Roadway Alignment: Equal to present minimum criteria,  Length Of Structure Improvement: 12.70m (41.67ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: April 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: 164361,  Location: 087171002 (Lat: 42.366222,  Lng: -92.826797),  Route carried "on" structure: County highway ,  Year Built: 1988,  Status: Open,  Structure Length: 3.14m (10.30ft),  Average Daily Traffic: 130 (year 2021),  Average Future Daily Traffic: 130 (year 2040),  Design Load: HS 20,  Features Intersected: BLACKHAWK CREEK ,BRANCH,  Facility Carried by Structure: FM
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 17.333,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 6.7m (22.0ft),  Material/Design: Concrete continuous,  Design/Construction: Slab,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 11.9m (39.0ft),  Curb-To-Curb Width: 9.1m (29.9ft),  Out-to-Out Width: 10.1m (33.1ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Good,  Channel: Satisfactory,  Operating Rating: 63.5 metric tons,  Method Used To Determine Operating Rating: Allowable Stress (AS),  Inventory Rating: 37.2 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,  Waterway Adequacy: Equal to present desirable criteria,  Approach Roadway Alignment: Better than present minimum criteria,  Length Of Structure Improvement: 10.30m (33.79ft),  Designated Inspection Frequency: Every 48 months,  Inspection Date: April 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: 16437,  Location: 087171302 (Lat: 42.345678,  Lng: -92.787697),  Route carried "on" structure: County highway ,  Year Built: 1965,  Status: Posted for load,  Structure Length: 1.34m (4.40ft),  Average Daily Traffic: 280 (year 2021),  Truck Traffic: 22%,  Average Future Daily Traffic: 280 (year 2041),  Design Load: H 20,  Features Intersected: BLACKHAWK CREEK ,BRANCH,  Facility Carried by Structure: FM
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 15.041,  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: 12.8m (42.0ft),  Curb or Sidewalk Widths: Left: 0.3m (1.0ft),  Right: 0.3m (1.0ft),  Curb-To-Curb Width: 8.5m (27.9ft),  Out-to-Out Width: 9.1m (29.9ft)

Condition: Deck: Serious,  Superstructure: Fair,  Substructure: Serious,  Channel: Satisfactory,  Operating Rating: 11.7 metric tons,  Method Used To Determine Operating Rating: Allowable Stress (AS),  Structural Evaluation: High priority of replacement,  Deck Geometry: Equal to present minimum criteria,  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: > 39.9% below),  Length Of Structure Improvement: 7.50m (24.61ft),  Designated Inspection Frequency: Every 12 months,  Inspection Date: April 2021,  Bridge Improvement Cost: $202,000,  Roadway Improvement Cost: $20,000,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Monolithic Concrete
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Structure Number: 164391,  Location: 087172401 (Lat: 42.339908,  Lng: -92.772414),  Route carried "on" structure: County highway ,  Year Built: 1997,  Status: Open,  Structure Length: 1.34m (4.40ft),  Average Daily Traffic: 45 (year 2017),  Average Future Daily Traffic: 45 (year 2039),  Design Load: HS 20,  Features Intersected: FK OF BLACKHAWK CREEK,  Facility Carried by Structure: LOCAL
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 18.934,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 7.0m (23.0ft),  Material/Design: Prestressed concrete,  Design/Construction: Tee Beam,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 12.5m (41.0ft),  Curb-To-Curb Width: 8.4m (27.6ft),  Out-to-Out Width: 8.5m (27.9ft)

Condition: Deck: Very good,  Superstructure: Very good,  Substructure: Good,  Channel: Good,  Operating Rating: 64.9 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 38.8 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  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,  Length Of Structure Improvement: 4.40m (14.44ft),  Designated Inspection Frequency: Every 48 months,  Inspection Date: April 2019,  Bridge Improvement Cost: $17,000,  Roadway Improvement Cost: $5,000,  Deck Structure Type: Concrete Precast Panels,  Wearing Surface/Protective System: Wearing Surface: Monolithic Concrete
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Structure Number: 16489,  Location: 088162001 (Lat: 42.427253,  Lng: -92.740722),  Route carried "on" structure: County highway ,  Year Built: 1956,  Status: Open,  Structure Length: 0.76m (2.49ft),  Average Daily Traffic: 180 (year 2021),  Average Future Daily Traffic: 180 (year 2040),  Features Intersected: BLACKHAWK CREEK ,BRANCH,  Facility Carried by Structure: FM
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 13.578,  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),  Curb-To-Curb Width: 6.7m (22.0ft),  Out-to-Out Width: 6.7m (22.0ft)

Condition: Channel: Satisfactory,  Culverts: Serious,  Operating Rating: 27.7 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 16.6 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: High priority of corrective action,  Deck Geometry: Meets minimum limits,  Waterway Adequacy: Equal to present minimum criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Length Of Structure Improvement: 4.50m (14.76ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: March 2020,  Bridge Improvement Cost: $122,000,  Roadway Improvement Cost: $12,000
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Structure Number: 16496,  Location: 088163303 (Lat: 42.391311,  Lng: -92.713806),  Route carried "on" structure: County highway ,  Year Built: 1964,  Status: Open,  Structure Length: 0.76m (2.49ft),  Average Daily Traffic: 540 (year 2021),  Truck Traffic: 18%,  Average Future Daily Traffic: 540 (year 2040),  Features Intersected: BLACKHAWK CREEK ,BRANCH,  Facility Carried by Structure: FM
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 8.530,  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: 3.7m (12.1ft)

Condition: Channel: Good,  Culverts: Fair,  Operating Rating: 67.9 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 40.7 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 desirable criteria,  Length Of Structure Improvement: 2.50m (8.20ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: March 2020,  Bridge Improvement Cost: $15,000,  Roadway Improvement Cost: $2,000
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Structure Number: 165231,  Location: 088173602 (Lat: 42.383769,  Lng: -92.787769),  Route carried "on" structure: County highway ,  Year Built: 1971,  Status: Open,  Structure Length: 3.90m (12.80ft),  Average Daily Traffic: 1,970 (year 2021),  Average Future Daily Traffic: 1,970 (year 2040),  Design Load: H 20,  Features Intersected: BLACKHAWK CREEK,  Facility Carried by Structure: FM
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 17.672,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 6.7m (22.0ft),  Material/Design: Concrete continuous,  Design/Construction: Slab,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 14.9m (48.9ft),  Curb or Sidewalk Widths: Left: 0.3m (1.0ft),  Right: 0.3m (1.0ft),  Curb-To-Curb Width: 9.1m (29.9ft),  Out-to-Out Width: 9.8m (32.2ft)

Condition: Deck: Fair,  Superstructure: Fair,  Substructure: Fair,  Channel: Satisfactory,  Operating Rating: 51.7 metric tons,  Method Used To Determine Operating Rating: Allowable Stress (AS),  Inventory Rating: 29.9 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: Equal to present minimum criteria,  Approach Roadway Alignment: Better than present minimum criteria,  Length Of Structure Improvement: 12.80m (41.99ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: April 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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