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

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Structure Number: 3304,  Location: 099280201 (Lat: 43.430278,  Lng: -94.127633),  Route carried "on" structure: County highway ,  Year Built: 1951,  Year Reconstructed: 1988,  Status: Open,  Structure Length: 3.75m (12.30ft),  Average Daily Traffic: 170 (year 2019),  Truck Traffic: 19%,  Average Future Daily Traffic: 170 (year 2041),  Design Load: H 20,  Features Intersected: UNION SLOUGH DITCH,  Facility Carried by Structure: A30 460TH ST
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 24.900,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 12.2m (40.0ft),  Material/Design: Steel continuous,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 14.3m (46.9ft),  Curb or Sidewalk Widths: Left: 0.6m (2.0ft),  Right: 0.6m (2.0ft),  Curb-To-Curb Width: 8.0m (26.2ft),  Out-to-Out Width: 11.0m (36.1ft)

Condition: Deck: Poor,  Superstructure: Fair,  Substructure: Fair,  Channel: Good,  Operating Rating: 47.1 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 28.2 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 desirable 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: May 2021,  Bridge Improvement Cost: $150,000,  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: 216931,  Location: 099281101 (Lat: 43.414483,  Lng: -94.126269),  Route carried "on" structure: County highway ,  Year Built: 1972,  Status: Posted for load,  Structure Length: 3.92m (12.86ft),  Average Daily Traffic: 60 (year 2015),  Average Future Daily Traffic: 60 (year 2041),  Design Load: H 15,  Features Intersected: UNION SLOUGH DITCH,  Facility Carried by Structure: LOC 450TH ST
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 25.597,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 8.5m (27.9ft),  Material/Design: Steel continuous,  Design/Construction: Stringer/Multi-beam,  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: 7.3m (24.0ft),  Out-to-Out Width: 8.0m (26.2ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Fair,  Channel: Good,  Operating Rating: 32.7 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 19.6 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  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 minimum criteria,  Bridge Posting: Required (Relationship of Operating Rating to Maximum Legal Load: 10.0 - 19.9% below),  Length Of Structure Improvement: 12.50m (41.01ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: May 2021,  Bridge Improvement Cost: $135,000,  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: 217051,  Location: 099290103 (Lat: 43.430172,  Lng: -94.213392),  Route carried "on" structure: County highway ,  Year Built: 1978,  Status: Open,  Structure Length: 2.38m (7.81ft),  Average Daily Traffic: 40 (year 2015),  Average Future Daily Traffic: 40 (year 2039),  Design Load: H 20,  Features Intersected: W BR BLUE EARTH RIVER,  Facility Carried by Structure: LOC 460TH ST
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 18.541,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 9.1m (29.9ft),  Material/Design: Concrete continuous,  Design/Construction: Slab,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 8.8m (28.9ft),  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: Good,  Superstructure: Good,  Substructure: Satisfactory,  Channel: Good,  Operating Rating: 52.4 metric tons,  Method Used To Determine Operating Rating: Allowable Stress (AS),  Inventory Rating: 33.0 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 desirable criteria,  Designated Inspection Frequency: Every 48 months,  Inspection Date: May 2019,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Monolithic Concrete

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Structure Number: 217141,  Location: 099291203 (Lat: 43.414303,  Lng: -94.213239),  Route carried "on" structure: County highway ,  Year Built: 1978,  Status: Open,  Structure Length: 2.33m (7.64ft),  Average Daily Traffic: 25 (year 2015),  Average Future Daily Traffic: 25 (year 2041),  Design Load: H 15,  Features Intersected: W BR BLUE EARTH RIVER,  Facility Carried by Structure: LOC 450TH ST
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 18.554,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 7.9m (25.9ft),  Material/Design: Concrete continuous,  Design/Construction: Slab,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 8.8m (28.9ft),  Curb or Sidewalk Widths: Left: 0.3m (1.0ft),  Right: 0.3m (1.0ft),  Curb-To-Curb Width: 7.3m (24.0ft),  Out-to-Out Width: 8.0m (26.2ft)

Condition: Deck: Satisfactory,  Superstructure: Satisfactory,  Substructure: Good,  Channel: Good,  Operating Rating: 37.0 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 22.1 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Equal to 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: May 2021,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Monolithic Concrete

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Structure Number: 217491,  Location: 100282101 (Lat: 43.473644,  Lng: -94.163969),  Route carried "on" structure: County highway ,  Year Built: 1980,  Status: Posted for load,  Structure Length: 1.90m (6.23ft),  Average Daily Traffic: 5 (year 2015),  Average Future Daily Traffic: 5 (year 2041),  Features Intersected: W BR BLUE EARTH RIVER,  Facility Carried by Structure: LOC 490TH ST
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 12.983,  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: 3,  Length of Maximum Span: 7.0m (23.0ft),  Curb-To-Curb Width: 7.2m (23.6ft),  Out-to-Out Width: 7.3m (24.0ft)

Condition: Deck: Good,  Superstructure: Satisfactory,  Substructure: Fair,  Channel: Fair,  Operating Rating: 20.7 metric tons,  Method Used To Determine Operating Rating: Allowable Stress (AS),  Inventory Rating: 16.7 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 desirable criteria,  Approach Roadway Alignment: Equal to present minimum criteria,  Bridge Posting: Required (Relationship of Operating Rating to Maximum Legal Load: 30.0 - 39.9% below),  Length Of Structure Improvement: 7.50m (24.61ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: May 2021,  Bridge Improvement Cost: $80,000,  Roadway Improvement Cost: $10,000,  Deck Structure Type: Wood or Timber,  Wearing Surface/Protective System: Wearing Surface: Wood or Timber

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Structure Number: 217501,  Location: 100282102 (Lat: 43.467211,  Lng: -94.167633),  Route carried "on" structure: County highway ,  Year Built: 2016,  Status: Open,  Structure Length: 3.71m (12.17ft),  Average Daily Traffic: 160 (year 2019),  Average Future Daily Traffic: 160 (year 2039),  Design Load: HL 93,  Features Intersected: W BR BLUE EARTH RIVER,  Facility Carried by Structure: P50 150TH AVE
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 46.972,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 9.8m (32.2ft),  Skew: 4 degrees,  Material/Design: Concrete continuous,  Design/Construction: Slab,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 14.3m (46.9ft),  Curb or Sidewalk Widths: Left: 0.4m (1.3ft),  Right: 0.4m (1.3ft),  Curb-To-Curb Width: 9.3m (30.5ft),  Out-to-Out Width: 10.1m (33.1ft)

Condition: Deck: Very good,  Superstructure: Very good,  Substructure: Very good,  Channel: Very good,  Operating Rating: 42.1 metric tons,  Method Used To Determine Operating Rating: Assigned ratings based on Load and Resistance Factor Design (LRFD) reported by rating factor (RF) using HL93 loadings,  Inventory Rating: 32.4 metric tons,  Method Used To Determine Inventory Rating: Assigned ratings based on Load and Resistance Factor Design (LRFD) reported by rating factor (RF) using HL93 loadings,  Structural Evaluation: Equal to present desirable criteria,  Deck Geometry: Equal to present minimum criteria,  Waterway Adequacy: Superior to present desirable criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 48 months,  Inspection Date: May 2019,  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: 217511,  Location: 100282701 (Lat: 43.458900,  Lng: -94.134703),  Route carried "on" structure: County highway ,  Year Built: 1975,  Status: Open,  Structure Length: 3.91m (12.83ft),  Average Daily Traffic: 40 (year 2015),  Average Future Daily Traffic: 40 (year 2041),  Design Load: H 20,  Features Intersected: UNION SLOUGH DITCH,  Facility Carried by Structure: LOC 480TH ST
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 24.563,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 9.1m (29.9ft),  Skew: 4 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: 8.5m (27.9ft),  Out-to-Out Width: 9.1m (29.9ft)

Condition: Deck: Satisfactory,  Superstructure: Satisfactory,  Substructure: Good,  Channel: Satisfactory,  Operating Rating: 52.2 metric tons,  Method Used To Determine Operating Rating: Allowable Stress (AS),  Inventory Rating: 30.4 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 desirable criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: May 2021,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Monolithic Concrete

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Structure Number: 217521,  Location: 100282901 (Lat: 43.459267,  Lng: -94.171472),  Route carried "on" structure: County highway ,  Year Built: 1973,  Status: Open,  Structure Length: 2.34m (7.68ft),  Average Daily Traffic: 40 (year 2015),  Average Future Daily Traffic: 40 (year 2041),  Design Load: H 15,  Features Intersected: W BR BLUE EARTH RIVER,  Facility Carried by Structure: LOC 480TH ST
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 21.586,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 7.9m (25.9ft),  Material/Design: Concrete continuous,  Design/Construction: Slab,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 8.8m (28.9ft),  Curb or Sidewalk Widths: Left: 0.3m (1.0ft),  Right: 0.3m (1.0ft),  Curb-To-Curb Width: 7.4m (24.3ft),  Out-to-Out Width: 8.0m (26.2ft)

Condition: Deck: Satisfactory,  Superstructure: Satisfactory,  Substructure: Satisfactory,  Channel: Satisfactory,  Operating Rating: 37.0 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 22.1 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Equal to 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: May 2021,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Monolithic Concrete

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Structure Number: 217531,  Location: 100282902 (Lat: 43.451039,  Lng: -94.187356),  Route carried "on" structure: County highway ,  Year Built: 1977,  Status: Open,  Structure Length: 2.34m (7.68ft),  Average Daily Traffic: 50 (year 2015),  Average Future Daily Traffic: 50 (year 2041),  Design Load: H 15,  Features Intersected: W BR BLUE EARTH RIVER,  Facility Carried by Structure: LOC 140TH AVE
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 47.020,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 7.9m (25.9ft),  Material/Design: Concrete continuous,  Design/Construction: Slab,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 8.8m (28.9ft),  Curb or Sidewalk Widths: Left: 0.3m (1.0ft),  Right: 0.3m (1.0ft),  Curb-To-Curb Width: 7.3m (24.0ft),  Out-to-Out Width: 8.0m (26.2ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Satisfactory,  Channel: Good,  Operating Rating: 37.0 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 22.1 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Equal to 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: May 2021,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Monolithic Concrete

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Structure Number: 217561,  Location: 100283501 (Lat: 43.444678,  Lng: -94.123794),  Route carried "on" structure: County highway ,  Year Built: 1981,  Status: Posted for load,  Structure Length: 3.10m (10.17ft),  Average Daily Traffic: 20 (year 2015),  Average Future Daily Traffic: 20 (year 2041),  Design Load: H 15,  Features Intersected: UNION SLOUGH DITCH,  Facility Carried by Structure: LOC 470TH ST
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 25.791,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 7.9m (25.9ft),  Material/Design: Concrete continuous,  Design/Construction: Slab,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 11.9m (39.0ft),  Curb or Sidewalk Widths: Left: 0.3m (1.0ft),  Right: 0.3m (1.0ft),  Curb-To-Curb Width: 7.3m (24.0ft),  Out-to-Out Width: 8.0m (26.2ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Good,  Channel: Good,  Operating Rating: 35.4 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 21.2 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Equal to 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,  Bridge Posting: Required (Relationship of Operating Rating to Maximum Legal Load: 0.1 - 9.9% below),  Length Of Structure Improvement: 12.80m (41.99ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: May 2021,  Bridge Improvement Cost: $128,000,  Roadway Improvement Cost: $12,000,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Monolithic Concrete