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370 AVENUE over E NISHNA RIVER OVERFLOW

Map

Coordinates:
+41.24167, -95.80000
41°14'30" N, 95°47'60" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:370 AVENUE over E NISHNA RIVER OVERFLOW
Structure number:000000000025490
Location:069402908
Purpose:Carries highway over relief for waterway
Route classification:Major Collector (Rural) [07]
Length of largest span:41.0 ft. [12.5 m]
Total length:253.0 ft. [77.1 m]
Roadway width between curbs:25.9 ft. [7.9 m]
Deck width edge-to-edge:27.9 ft. [8.5 m]
Owner:County Highway Agency [02]
Year built:1957
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:MS 18 / HS 20 [5]
Number of main spans:6
Main spans material:Steel [3]
Main spans design:Stringer/Multi-beam or girder [02]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Monolithic Concrete (concurrently placed with structural deck) [1]

Latest Available Inspection: May 2015

Good/Fair/Poor Condition:Poor
Status:Open, no restriction [A]
Average daily traffic:800 [as of 2012]
Truck traffic:6% of total traffic
Deck condition:Satisfactory [6 out of 9]
Superstructure condition:Fair [5 out of 9]
Substructure condition:Serious [3 out of 9]
Structural appraisal:Basically intolerable requiring high priority of corrrective action [3]
Deck geometry appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Water adequacy appraisal:Equal to present desirable criteria [8]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Channel protection:Bank protection has failed. River control devices have been destroyed. Stream bed aggradation, degradation or lateral movement has changed the channel to now threaten the bridge and/or approach roadway. [3]
Scour condition:Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Operating rating:37.2 tons [33.8 metric tons]
Inventory rating:22.2 tons [20.2 metric tons]
Sufficiency rating:26.1
Recommended work:Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]

Previous Inspections

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
May 201526.1PoorSatisfactoryFairSeriousSD800
May 201326.1PoorSatisfactoryFairSeriousSD800
May 201129.9PoorGoodGoodSeriousSD850
May 200972.6GoodVery GoodGoodGood-850
April 200772.9GoodVery GoodGoodGood-1030
March 200570.9GoodVery GoodGoodGood-1030
March 200370.9GoodVery GoodVery GoodGood-1080
April 200170.9GoodVery GoodVery GoodGood-1080
February 199971.9GoodVery GoodVery GoodGood-830
March 199771.9GoodVery GoodVery GoodGood-830
January 199570.9GoodVery GoodVery GoodGood-910
May 199371.9GoodVery GoodVery GoodGood-910
March 199163.2GoodVery GoodGoodGood-910