+40.28498, -90.50855
40°17'06" N, 90°30'31" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:TR 477 over TRIB SUGAR CR
Structure number:055560600000000
Old structure number:000055560629246 (from 1992 edition)
Purpose:Carries highway over waterway
Route classification:Local (Rural) [09]
Length of largest span:20.0 ft. [6.1 m]
Total length:22.0 ft. [6.7 m]
Roadway width between curbs:16.1 ft. [4.9 m]
Deck width edge-to-edge:18.0 ft. [5.5 m]
Owner:Town or Township Highway Agency [03]
Year built:1915
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Main span material:Concrete [1]
Main span design:Slab [01]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Gravel [8]

Latest Available Inspection: January 2018

Good/Fair/Poor Condition:Poor
Status:Open, no restriction [A]
Average daily traffic:10 [as of 2016]
Deck condition:Fair [5 out of 9]
Superstructure condition:Fair [5 out of 9]
Substructure condition:Poor [4 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:Better than present minimum criteria [7]
Roadway alignment appraisal:Basically intolerable requiring high priority of corrrective action [3]
Channel protection:Bank and embankment protection is severely undermined. River control devices have severe damage. Large deposits of debris are in the channel. [4]
Scour condition:Bridge foundations determined to be stable for assessed or calculated scour condition. [5]
Sufficiency rating:37.8
Recommended work:Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Estimated cost of work:$53,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
January 2018PoorFairFairPoor1037.8
December 2015PoorFairFairPoor1037.8
March 2014PoorFairFairPoor1037.8
January 2012PoorFairFairPoor1049.0
February 2010PoorFairFairPoor1049.0
January 2008PoorFairFairPoor1049.0
January 2006PoorFairFairPoor2549.0
January 2004PoorFairFairSerious2532.0
January 2002PoorFairFairPoor2549.0
March 2000PoorFairFairPoor2552.0
December 1997PoorFairFairPoor2552.0
December 1995PoorFairFairPoor2552.0
January 1994PoorSatisfactorySatisfactoryPoor2554.0
January 1992PoorSatisfactorySatisfactoryPoor2554.0