M-57 over FLAT RIVER


+43.17750, -85.24773
43°10'39" N, 85°14'52" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:M-57 over FLAT RIVER
Structure number:000000000007431
Old structure number:59159022000B010 (from 1992 edition)
Purpose:Carries highway and pedestrian walkway over waterway
Route classification:Minor Arterial (Urban) [16]
Length of largest span:59.7 ft. [18.2 m]
Total length:159.8 ft. [48.7 m]
Roadway width between curbs:44.0 ft. [13.4 m]
Deck width edge-to-edge:55.8 ft. [17.0 m]
Owner:State Highway Agency [01]
Year built:1948
Year reconstructed:2000
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:3
Main spans material:Prestressed concrete [5]
Main spans design:Box beam or girders - Multiple [05]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Monolithic Concrete (concurrently placed with structural deck) [1]

Latest Available Inspection: July 2015

Good/Fair/Poor Condition:Good
Status:Open, no restriction [A]
Average daily traffic:11,727 [as of 2007]
Truck traffic:7% of total traffic
Deck condition:Good [7 out of 9]
Superstructure condition:Good [7 out of 9]
Substructure condition:Good [7 out of 9]
Structural appraisal:Better than present minimum criteria [7]
Deck geometry appraisal:Equal to present minimum criteria [6]
Water adequacy appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Channel protection:Banks are protected or well vegetated. River control devices such as spur dikes and embankment protection are not required or are in a stable condition. [8]
Scour condition:Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Operating rating:109.7 tons [99.7 metric tons]
Inventory rating:73.3 tons [66.6 metric tons]
Sufficiency rating:97.9

Previous Inspections

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
July 201597.9GoodGoodGoodGood-11727
July 201397.9GoodGoodVery GoodVery Good-11727
July 201197.9GoodGoodVery GoodVery Good-11727
July 200997.9GoodGoodVery GoodVery Good-11727
July 200797.0GoodVery GoodVery GoodVery Good-11077
August 200597.0GoodVery GoodVery GoodVery Good-11077
August 200397.3GoodVery GoodVery GoodVery Good-12000
April 200235.5GoodExcellentExcellentExcellent-12000
August 200127.8PoorSeriousFairSatisfactory-12000
August 200027.8PoorSeriousFairSatisfactory-12000
August 199891.2PoorSeriousSatisfactorySatisfactorySD12000
July 199695.3FairFairSatisfactorySatisfactory-12000
May 199495.4FairFairSatisfactorySatisfactory-10500
May 199295.4FairFairSatisfactoryGood-10500
May 199095.4FairFairVery GoodGood-10500