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474TH AVENUE over BIG SIOUX RIVER

Map 

Coordinates:
+43.79660, -96.72919
43°47'48" N, 96°43'45" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.

Facts 

Name:474TH AVENUE over BIG SIOUX RIVER
Structure number:000000050200035
Location:1.8S & 0.4W DELL RAPIDS
Purpose:Carries highway over waterway
Route classification:Local (Rural) [09]
Length of largest span:53.5 ft. [16.3 m]
Total length:155.8 ft. [47.5 m]
Roadway width between curbs:32.2 ft. [9.8 m]
Deck width edge-to-edge:34.5 ft. [10.5 m]
Skew angle:25°
Owner:County Highway Agency [02]
Year built:1997
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:MS 18+Mod / HS 20+Mod [6]
Number of main spans:3
Main spans material:Prestressed concrete [5]
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: August 2015 

Status:Open, no restriction [A]
Average daily traffic:50 [as of 2013]
Truck traffic:2% of total traffic
Deck condition:Good [7 out of 9]
Superstructure condition:Very Good [8 out of 9]
Substructure condition:Good [7 out of 9]
Structural appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Deck geometry appraisal:Equal to present desirable criteria [8]
Water adequacy appraisal:Superior to present desirable criteria [9]
Roadway alignment appraisal:Superior to present desirable criteria [9]
Channel protection:There are no noticeable or noteworthy deficiencies which affect the condition of the channel. [9]
Pier/abutment protection:Navigation protection not required [1]
Scour condition:Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Operating rating:36.0 tons [32.7 metric tons]
Inventory rating:21.6 tons [19.6 metric tons]
Sufficiency rating:84.1
Recommended work:Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Estimated cost of work:$1,238,000

Previous Inspections 

DateSuff. ratingEvaluationDeckSuper.Sub.ADT
August 201584.1Not deficientGoodVery GoodGood50
September 201495.0Not deficientGoodVery GoodGood50
August 201295.0Not deficientSatisfactoryGoodSatisfactory50
August 201095.0Not deficientSatisfactoryVery GoodSatisfactory50
October 200895.0Not deficientSatisfactoryVery GoodSatisfactory50
September 200695.0Not deficientGoodVery GoodGood50
September 200495.0Not deficientGoodVery GoodGood50
October 200295.0Not deficientGoodVery GoodGood50
November 200095.0Not deficientGoodVery GoodGood50
August 199895.0Not deficientGoodVery GoodGood50
October 199634.0Structurally deficientSatisfactorySatisfactorySatisfactory50
October 199433.7Structurally deficientSatisfactoryGoodSatisfactory50
August 199244.3Functionally obsoleteSatisfactoryGoodSatisfactory50
July 199031.5Structurally deficientSatisfactoryGoodSatisfactory50