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


  • National Bridge Inventory (NBI) Statistics
  • 18Number of bridges
  • 125ft / 37.5mTotal length
  • 15,760Total average daily traffic
  • 1,443Total average daily truck traffic
  • 15,760Total future (year 2039) average daily traffic
  • National Bridge Inventory (NBI) Registered Bridges for Walford
  • No street view available for this location

New bridges in Walford, IA - historical statistics
  • New bridges - historical statistics
  • 11940-1949
  • 21950-1959
  • 31960-1969
  • 41970-1979
  • 41980-1989
  • 21990-1999
  • 12000-2009
  • 12010-2019
Average Bridge Daily Traffic in Walford, IA
Average Bridge Truck Traffic in Walford, IA
Bridge Condition - Deck
  • Bridge Condition - Deck
  • 8.3%Very good
  • 33.3%Good
  • 16.7%Satisfactory
  • 41.7%Fair
Bridge Condition - Superstructure
  • Bridge Condition - Superstructure
  • 8.3%Very good
  • 33.3%Good
  • 16.7%Satisfactory
  • 41.7%Fair
Bridge Condition - Substructure
  • Bridge Condition - Substructure
  • 8.3%Very good
  • 25.0%Good
  • 50.0%Satisfactory
  • 8.3%Fair
  • 8.3%Serious
Bridge Condition - Channel
  • Bridge Condition - Channel
  • 16.7%Very good
  • 22.2%Good
  • 55.6%Satisfactory
  • 5.6%Fair
Bridge Condition - Culverts
  • Bridge Condition - Culverts
  • 66.7%Good
  • 33.3%Satisfactory
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Structure Number: 1041,  Location: 000000000 (Lat: 41.115856,  Lng: -95.637444),  Route carried "on" structure: City street ,  Year Built: 1950,  Status: Open,  Structure Length: 0.73m (2.40ft),  Average Daily Traffic: 900 (year 2016),  Average Future Daily Traffic: 900 (year 2041),  Design Load: HS 20,  Features Intersected: STREAM,  Facility Carried by Structure: MAIN ST CO.L-55
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.898,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 9.4m (30.8ft),  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: Satisfactory,  Culverts: Good,  Operating Rating: 44.4 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: Somewhat better than minimum adequacy,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: March 2021
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Structure Number: 1166,  Location: N60000500 (Lat: 41.873397,  Lng: -91.835728),  Route carried "on" structure: City street ,  Year Built: 1955,  Status: Posted for load,  Structure Length: 0.94m (3.08ft),  Average Daily Traffic: 110 (year 2017),  Average Future Daily Traffic: 110 (year 2041),  Design Load: H 15,  Features Intersected: SMALL STREAM,  Facility Carried by Structure: FOURTH ST
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.063,  Lanes on structure: 2,  Owner: City or Municipal Highway Agency,  Approaching Roadway Width: 7.3m (24.0ft),  Material/Design: Concrete,  Design/Construction: Tee Beam,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 8.8m (28.9ft),  Curb-To-Curb Width: 7.3m (24.0ft),  Out-to-Out Width: 7.9m (25.9ft)

Condition: Deck: Fair,  Superstructure: Fair,  Substructure: Satisfactory,  Channel: Satisfactory,  Operating Rating: 20.4 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: 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: 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: 20.0 - 29.9% below),  Length Of Structure Improvement: 5.10m (16.73ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: March 2021,  Bridge Improvement Cost: $117,000,  Roadway Improvement Cost: $12,000,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Bituminous
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Structure Number: 14521,  Location: 1.3 mi. N of SR E66 (Lat: 41.876308,  Lng: -91.842217),  Route carried "on" structure: US 151,  Year Built: 1995,  Status: Open,  Structure Length: 0.98m (3.22ft),  Average Daily Traffic: 6,700 (year 2020),  Truck Traffic: 8%,  Average Future Daily Traffic: 6,700 (year 2042),  Design Load: HS 20,  Features Intersected: KNAPP CREEK
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 27.377,  Lanes on structure: 2,  Base Highway Network: Yes,  Owner: State Highway Agency,  Approaching Roadway Width: 13.4m (44.0ft),  Material/Design: Concrete continuous,  Design/Construction: Culvert,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 3.0m (9.8ft)

Condition: Channel: Good,  Culverts: Good,  Operating Rating: 39.5 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: 30.5 metric tons,  Method Used To Determine Inventory Rating: Load and Resistance Factor Rating (LRFR) rating reported by rating factor(RF) method using HL-93 loadings,  Structural Evaluation: Better than present minimum criteria,  Waterway Adequacy: Equal to present desirable criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: January 2022
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Structure Number: 70051,  Location: 082091104 (Lat: 41.927458,  Lng: -91.862022),  Route carried "on" structure: County highway ,  Year Built: 1976,  Status: Posted for load,  Structure Length: 0.94m (3.08ft),  Average Daily Traffic: 30 (year 2017),  Average Future Daily Traffic: 30 (year 2041),  Design Load: H 20,  Features Intersected: BR PRAIRIE CK,  Facility Carried by Structure: LOCAL
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.858,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 7.9m (25.9ft),  Skew: 3 degrees,  Material/Design: Concrete,  Design/Construction: Channel Beam,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 9.1m (29.9ft),  Curb-To-Curb Width: 7.3m (24.0ft),  Out-to-Out Width: 7.9m (25.9ft)

Condition: Deck: Fair,  Superstructure: Fair,  Substructure: Serious,  Channel: Very good,  Operating Rating: 21.5 metric tons,  Method Used To Determine Operating Rating: Allowable Stress (AS),  Inventory Rating: 14.4 metric tons,  Method Used To Determine Inventory Rating: Allowable Stress (AS),  Structural Evaluation: High priority of corrective action,  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: 10.0 - 19.9% below),  Length Of Structure Improvement: 3.30m (10.83ft),  Designated Inspection Frequency: Every 12 months,  Inspection Date: April 2021,  Bridge Improvement Cost: $25,000,  Roadway Improvement Cost: $3,000,  Deck Structure Type: Concrete Precast Panels,  Wearing Surface/Protective System: Wearing Surface: Monolithic Concrete
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Structure Number: 70071,  Location: 082091403 (Lat: 41.919744,  Lng: -91.856331),  Route carried "on" structure: County highway ,  Year Built: 2018,  Status: Open,  Structure Length: 2.44m (8.01ft),  Average Daily Traffic: 90 (year 2021),  Average Future Daily Traffic: 90 (year 2040),  Design Load: HL 93,  Features Intersected: PRAIRIE CREEK,  Facility Carried by Structure: 76TH ST
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 34.205,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 8.5m (27.9ft),  Skew: 1 degrees,  Material/Design: Concrete continuous,  Design/Construction: Slab,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 9.4m (30.8ft),  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: 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: March 2020,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Monolithic Concrete
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Structure Number: 70081,  Location: 082091404 (Lat: 41.908267,  Lng: -91.871300),  Route carried "on" structure: County highway ,  Year Built: 1987,  Status: Open,  Structure Length: 2.90m (9.51ft),  Average Daily Traffic: 15 (year 2017),  Average Future Daily Traffic: 15 (year 2041),  Features Intersected: PRAIRIE CREEK,  Facility Carried by Structure: LOCAL (LWC)
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 3.561,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 7.9m (25.9ft),  Material/Design: Steel,  Design/Construction: Slab,  Number Of Spans In Main Unit: 2,  Length of Maximum Span: 15.2m (49.9ft),  Curb-To-Curb Width: 9.1m (29.9ft),  Out-to-Out Width: 9.1m (29.9ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Satisfactory,  Channel: Fair,  Operating Rating: 57.2 metric tons,  Method Used To Determine Operating Rating: Allowable Stress (AS),  Inventory Rating: 32.8 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: Somewhat better than minimum adequacy,  Approach Roadway Alignment: Equal to present minimum criteria,  Length Of Structure Improvement: 9.50m (31.17ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: April 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: 70131,  Location: 082092502 (Lat: 41.881072,  Lng: -91.851039),  Route carried "on" structure: County highway ,  Year Built: 1989,  Status: Open,  Structure Length: 0.76m (2.49ft),  Average Daily Traffic: 60 (year 2017),  Average Future Daily Traffic: 60 (year 2039),  Design Load: HS 20,  Features Intersected: KNAPP CREEK,  Facility Carried by Structure: LOCAL
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 2.152,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 7.9m (25.9ft),  Material/Design: Concrete continuous,  Design/Construction: Culvert,  Number Of Spans In Main Unit: 2,  Length of Maximum Span: 3.7m (12.1ft)

Condition: Channel: Satisfactory,  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 minimum 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: March 2019,  Bridge Improvement Cost: $15,000,  Roadway Improvement Cost: $2,000
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Structure Number: 10676,  Location: 097203004 (Lat: 43.191856,  Lng: -93.260425),  Route carried "on" structure: County highway ,  Year Built: 1964,  Status: Open,  Structure Length: 2.29m (7.51ft),  Average Daily Traffic: 3,350 (year 2021),  Truck Traffic: 13%,  Average Future Daily Traffic: 3,350 (year 2040),  Design Load: H 20,  Features Intersected: CALMUS CREEK,  Facility Carried by Structure: MALLARD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 23.575,  Lanes on structure: 2,  Owner: County 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: 8.8m (28.9ft),  Curb-To-Curb Width: 8.6m (28.2ft),  Out-to-Out Width: 9.1m (29.9ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Satisfactory,  Channel: Very good,  Operating Rating: 55.8 metric tons,  Method Used To Determine Operating Rating: Allowable Stress (AS),  Inventory Rating: 33.2 metric tons,  Method Used To Determine Inventory Rating: Allowable Stress (AS),  Structural Evaluation: Equal to present minimum criteria,  Deck Geometry: Meets minimum limits,  Waterway Adequacy: Equal to present desirable criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Length Of Structure Improvement: 10.20m (33.46ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: January 2020,  Bridge Improvement Cost: $286,000,  Roadway Improvement Cost: $57,000,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Monolithic Concrete
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Structure Number: 205721,  Location: 081080402 (Lat: 41.859872,  Lng: -91.792511),  Route carried "on" structure: County highway ,  Year Built: 2008,  Status: Open,  Structure Length: 0.64m (2.10ft),  Average Daily Traffic: 50 (year 2021),  Truck Traffic: 34%,  Average Future Daily Traffic: 50 (year 2041),  Design Load: HL 93,  Features Intersected: KNAPP CR,  Facility Carried by Structure: CALKINS AVE
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 14.471,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 9.8m (32.2ft),  Material/Design: Concrete continuous,  Design/Construction: Culvert,  Number Of Spans In Main Unit: 2,  Length of Maximum Span: 3.0m (9.8ft)

Condition: Channel: Satisfactory,  Culverts: Good,  Operating Rating: 46.7 metric tons,  Method Used To Determine Operating Rating: Load and Resistance Factor Rating (LRFR) rating reported by rating factor(RF) method using HL-93 loadings,  Inventory Rating: 36.0 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: Better than present minimum criteria,  Waterway Adequacy: Equal to present desirable criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 48 months,  Inspection Date: April 2021
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Structure Number: 205731,  Location: 081080501 (Lat: 41.861903,  Lng: -91.793364),  Route carried "on" structure: County highway ,  Year Built: 1974,  Status: Open,  Structure Length: 0.70m (2.30ft),  Average Daily Traffic: 60 (year 2018),  Average Future Daily Traffic: 60 (year 2041),  Design Load: HL 93,  Features Intersected: STREAM,  Facility Carried by Structure: LINN-JOHNSON RD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 3.154,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 7.0m (23.0ft),  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: Satisfactory,  Operating Rating: 46.7 metric tons,  Method Used To Determine Operating Rating: Load and Resistance Factor Rating (LRFR) rating reported by rating factor(RF) method using HL-93 loadings,  Inventory Rating: 36.0 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,  Waterway Adequacy: Equal to present minimum criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 48 months,  Inspection Date: April 2021
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Structure Number: 205741,  Location: 081080601 (Lat: 41.861853,  Lng: -91.827292),  Route carried "on" structure: County highway ,  Year Built: 1984,  Status: Open,  Structure Length: 3.87m (12.70ft),  Average Daily Traffic: 45 (year 2018),  Truck Traffic: 29%,  Average Future Daily Traffic: 45 (year 2041),  Design Load: HS 20,  Features Intersected: KNAPP CREEK,  Facility Carried by Structure: LINN-JOHNSON RD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.338,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 8.8m (28.9ft),  Skew: 3 degrees,  Material/Design: Concrete continuous,  Design/Construction: Slab,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 14.0m (45.9ft),  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: 54.0 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 32.3 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: Equal to present desirable criteria,  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: 20575,  Location: 081080602 (Lat: 41.858344,  Lng: -91.831331),  Route carried "on" structure: County highway ,  Year Built: 1966,  Status: Posted for load,  Structure Length: 0.79m (2.59ft),  Average Daily Traffic: 710 (year 2021),  Truck Traffic: 19%,  Average Future Daily Traffic: 710 (year 2041),  Design Load: HS 20,  Features Intersected: STREAM,  Facility Carried by Structure: FM JOHNS-IOWA R
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 28.289,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 7.0m (23.0ft),  Skew: 3 degrees,  Material/Design: Concrete,  Design/Construction: Slab,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 7.9m (25.9ft),  Curb-To-Curb Width: 8.5m (27.9ft),  Out-to-Out Width: 9.3m (30.5ft)

Condition: Deck: Satisfactory,  Superstructure: Satisfactory,  Substructure: Satisfactory,  Channel: Satisfactory,  Operating Rating: 30.6 metric tons,  Method Used To Determine Operating Rating: Allowable Stress (AS),  Inventory Rating: 17.1 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: Equal to present desirable criteria,  Bridge Posting: Required (Relationship of Operating Rating to Maximum Legal Load: 0.1 - 9.9% below),  Length Of Structure Improvement: 4.00m (13.12ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: April 2021,  Bridge Improvement Cost: $70,000,  Roadway Improvement Cost: $30,000,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Monolithic Concrete
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Structure Number: 205761,  Location: 081080604 (Lat: 41.858903,  Lng: -91.816878),  Route carried "on" structure: County highway ,  Year Built: 1995,  Status: Open,  Structure Length: 3.51m (11.52ft),  Average Daily Traffic: 10 (year 2021),  Average Future Daily Traffic: 10 (year 2041),  Design Load: HS 20,  Features Intersected: KNAPP CREEK,  Facility Carried by Structure: NW BAXTER AVE
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 8.604,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 5.8m (19.0ft),  Material/Design: Concrete continuous,  Design/Construction: Slab,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 13.4m (44.0ft),  Curb-To-Curb Width: 7.4m (24.3ft),  Out-to-Out Width: 7.6m (24.9ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Good,  Channel: Satisfactory,  Operating Rating: 51.3 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: Better than present minimum criteria,  Deck Geometry: Equal to present minimum criteria,  Waterway Adequacy: Equal to present desirable criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: April 2021,  Deck Structure Type: Concrete Cast-file-Place
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Structure Number: 20577,  Location: 081080801 (Lat: 41.847550,  Lng: -91.796678),  Route carried "on" structure: County highway ,  Year Built: 1966,  Status: Open,  Structure Length: 3.14m (10.30ft),  Average Daily Traffic: 1,200 (year 2018),  Truck Traffic: 12%,  Average Future Daily Traffic: 1,200 (year 2041),  Design Load: HS 20,  Features Intersected: STREAM,  Facility Carried by Structure: NW 120TH ST
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 2.865,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 7.0m (23.0ft),  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: 8.6m (28.2ft),  Out-to-Out Width: 9.3m (30.5ft)

Condition: Deck: Fair,  Superstructure: Fair,  Substructure: Satisfactory,  Channel: Satisfactory,  Operating Rating: 56.7 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 30.7 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: Equal to present minimum criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Length Of Structure Improvement: 15.00m (49.21ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: April 2021,  Bridge Improvement Cost: $250,000,  Roadway Improvement Cost: $30,000,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Monolithic Concrete
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Structure Number: 205821,  Location: 081081601 (Lat: 41.832989,  Lng: -91.789253),  Route carried "on" structure: County highway ,  Year Built: 1987,  Status: Open,  Structure Length: 3.90m (12.80ft),  Average Daily Traffic: 50 (year 2018),  Average Future Daily Traffic: 50 (year 2041),  Design Load: HS 20,  Features Intersected: KNAPP CREEK,  Facility Carried by Structure: 140TH ST NW
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 3.470,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 7.0m (23.0ft),  Material/Design: Concrete continuous,  Design/Construction: Slab,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 14.9m (48.9ft),  Curb-To-Curb Width: 7.3m (24.0ft),  Out-to-Out Width: 7.3m (24.0ft)

Condition: Deck: Satisfactory,  Superstructure: Satisfactory,  Substructure: Good,  Channel: Good,  Operating Rating: 56.6 metric tons,  Method Used To Determine Operating Rating: Allowable Stress (AS),  Inventory Rating: 19.4 metric tons,  Method Used To Determine Inventory Rating: Allowable Stress (AS),  Structural Evaluation: Somewhat better than minimum adequacy,  Deck Geometry: Equal to present minimum criteria,  Waterway Adequacy: Equal to present desirable criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Length Of Structure Improvement: 13.00m (42.65ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: April 2021,  Bridge Improvement Cost: $210,000,  Roadway Improvement Cost: $50,000,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Monolithic Concrete
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Structure Number: 2204,  Location: 082080704 (Lat: 41.923236,  Lng: -91.832494),  Route carried "on" structure: County highway ,  Year Built: 1947,  Status: Posted for load-capacity,  Structure Length: 5.58m (18.31ft),  Average Daily Traffic: 140 (year 2017),  Average Future Daily Traffic: 140 (year 2040),  Design Load: H 15,  Features Intersected: PRAIRIE CREEK,  Facility Carried by Structure: LINN-BENTON RD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 6.249,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 9.8m (32.2ft),  Material/Design: Steel continuous,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 21.3m (69.9ft),  Curb-To-Curb Width: 6.1m (20.0ft),  Out-to-Out Width: 6.7m (22.0ft)

Condition: Deck: Fair,  Superstructure: Fair,  Substructure: Fair,  Channel: Good,  Operating Rating: 25.9 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: 20.1 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: Somewhat better than minimum adequacy,  Deck Geometry: Meets minimum limits,  Waterway Adequacy: Better than present minimum criteria,  Approach Roadway Alignment: Better than present minimum criteria,  Length Of Structure Improvement: 20.00m (65.62ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: August 2020,  Bridge Improvement Cost: $250,000,  Roadway Improvement Cost: $50,000,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Monolithic Concrete
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Structure Number: 22047,  Location: Benton-Linn Road (Lat: 41.878564,  Lng: -91.831572),  Route carried "on" structure: County highway ,  Year Built: 1972,  Status: Open,  Structure Length: 0.64m (2.10ft),  Average Daily Traffic: 1,530 (year 2021),  Truck Traffic: 2%,  Average Future Daily Traffic: 1,530 (year 2041),  Design Load: H 20,  Features Intersected: TRIB TO KNAPP CREEK,  Facility Carried by Structure: LINN-BENTON RD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 1.674,  Lanes on structure: 2,  Owner: City or Municipal Highway Agency,  Approaching Roadway Width: 11.0m (36.1ft),  Skew: 1 degrees,  Material/Design: Concrete continuous,  Design/Construction: Culvert,  Number Of Spans In Main Unit: 2,  Length of Maximum Span: 3.0m (9.8ft),  Curb-To-Curb Width: 9.1m (29.9ft),  Out-to-Out Width: 9.1m (29.9ft)

Condition: Channel: Good,  Culverts: Satisfactory,  Operating Rating: 46.7 metric tons,  Method Used To Determine Operating Rating: Load and Resistance Factor Rating (LRFR) rating reported by rating factor(RF) method using HL-93 loadings,  Inventory Rating: 36.0 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: Somewhat better than minimum adequacy,  Waterway Adequacy: Better than present minimum criteria,  Approach Roadway Alignment: Better than present minimum criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: March 2021
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Structure Number: 22048,  Location: 082083108 (Lat: 41.864914,  Lng: -91.831408),  Route carried "on" structure: County highway ,  Year Built: 1972,  Status: Open,  Structure Length: 2.77m (9.09ft),  Average Daily Traffic: 710 (year 2021),  Truck Traffic: 19%,  Average Future Daily Traffic: 710 (year 2040),  Design Load: H 20,  Features Intersected: KNAPP CREEK,  Facility Carried by Structure: LINN-BENTON RD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.341,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 11.0m (36.1ft),  Skew: 3 degrees,  Material/Design: Concrete continuous,  Design/Construction: Slab,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 10.4m (34.1ft),  Curb-To-Curb Width: 9.1m (29.9ft),  Out-to-Out Width: 9.8m (32.2ft)

Condition: Deck: Fair,  Superstructure: Fair,  Substructure: Satisfactory,  Channel: Satisfactory,  Operating Rating: 34.3 metric tons,  Method Used To Determine Operating Rating: Load and Resistance Factor Rating (LRFR) rating reported by rating factor(RF) method using HL-93 loadings,  Inventory Rating: 26.6 metric tons,  Method Used To Determine Inventory Rating: Load and Resistance Factor Rating (LRFR) rating reported by rating factor(RF) method using HL-93 loadings,  Structural Evaluation: Somewhat better than minimum adequacy,  Deck Geometry: Equal to present minimum criteria,  Waterway Adequacy: Better than present minimum criteria,  Approach Roadway Alignment: Better than present minimum criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: August 2020,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Monolithic Concrete
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