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COUNTY RD 474 over BLACK CR

Map

Coordinates:
+39.71726, -91.93270
39°43'02" N, 91°55'58" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:COUNTY RD 474 over BLACK CR
Structure number:22091
Location:S 20 T 57 N R 9 W
Purpose:Carries highway over waterway
Route classification:Local (Rural) [09]
Length of largest span:60.0 ft. [18.3 m]
Total length:61.0 ft. [18.6 m]
Roadway width between curbs:11.8 ft. [3.6 m]
Deck width edge-to-edge:12.1 ft. [3.7 m]
Owner:County Highway Agency [02]
Year built:1910
Historic significance:Historical significance is not determinable at this time [4]
Main span material:Steel [3]
Main span design:Truss - Thru [10]
Deck type:Concrete Cast-in-Place [1]

Latest Available Inspection: March 2018

Good/Fair/Poor Condition:Fair
Status:Posted for load [P]
Average daily traffic:50 [as of 2016]
Truck traffic:10% of total traffic
Deck condition:Fair [5 out of 9]
Superstructure condition:Fair [5 out of 9]
Substructure condition:Fair [5 out of 9]
Structural appraisal:Meets minimum tolerable limits to be left in place as is [4]
Deck geometry appraisal:Basically intolerable requiring high priority of corrrective action [3]
Water adequacy appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Roadway alignment appraisal:Equal to present minimum criteria [6]
Channel protection:Bank protection is being eroded. River control devices and/or embankment have major damage. Trees and rush restrict the channel. [5]
Scour condition:Bridge foundations determined to be stable for assessed or calculated scour condition. [5]
Sufficiency rating:42.1
Recommended work:Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Estimated cost of work:$282,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
March 2018FairFairFairFair5042.1
March 2016FairFairFairFair5042.1
March 2014FairFairFairFair5042.1
March 2012FairFairFairFair5042.1
May 2010FairFairFairFair5042.1
May 2008FairFairFairFair5042.1
April 2006FairFairFairFair5042.1
April 2004FairFairSatisfactoryFair5042.1
March 2002FairFairFairFair5042.1
February 2000FairFairFairFair3542.1