M-3 (GRATIOT AVE) over I-375


+42.33980, -83.04160
42°20'23" N, 83°02'30" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.


Name:M-3 (GRATIOT AVE) over I-375
Structure number:000000000011799
Old structure number:82182251000S010 (from 1992 edition)
Purpose:Carries highway and pedestrian walkway over highway
Route classification:Other Principal Arterial (Urban) [14]
Length of largest span:77.8 ft. [23.7 m]
Total length:298.9 ft. [91.1 m]
Roadway width between curbs:89.9 ft. [27.4 m]
Deck width edge-to-edge:119.8 ft. [36.5 m]
Vertical clearance below bridge:14.4 ft. [4.4 m]
Skew angle:17°
Owner:State Highway Agency [01]
Year built:1963
Year reconstructed:1996
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:5
Main spans material:Steel [3]
Main spans design:Stringer/Multi-beam or girder [02]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Bituminous [6]

Latest Available Inspection: December 2015 

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:12,807 [as of 2007]
Truck traffic:9% of total traffic
Deck condition:Good [7 out of 9]
Superstructure condition:Very Good [8 out of 9]
Substructure condition:Fair [5 out of 9]
Structural appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Deck geometry appraisal:Basically intolerable requiring high priority of replacement [2]
Underclearances appraisal:Basically intolerable requiring high priority of corrrective action [3]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Scour condition:Bridge not over waterway. [N]
Inventory rating:66.6 tons [60.5 metric tons]
Sufficiency rating:62.0

Previous Inspections 

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
December 201562.0FairGoodVery GoodFairFO12807
January 201462.0FairGoodExcellentFairFO12807
January 201262.0FairGoodGoodFairFO12807
March 201062.0FairGoodGoodFairFO12807
July 200873.5GoodGoodVery GoodGoodFO12807
July 200673.8GoodGoodVery GoodGoodFO11335
July 200473.3GoodGoodVery GoodGood-14000
July 200273.3GoodGoodVery GoodGood-14000
May 200073.3FairSatisfactoryVery GoodGood-14000
September 199973.3GoodExcellentExcellentGood-14000
December 199873.3GoodExcellentExcellent--14000
December 199722.2PoorSeriousPoorSerious-14000
September 199620.8PoorSeriousPoorSerious-16000
October 199517.4PoorSeriousPoorSeriousSD19500
November 199239.2PoorPoorPoorPoorSD19500
March 199139.2PoorPoorPoorPoorSD19500