Share:

M-3 (GRATIOT AVE) over GTW RR

Map

Coordinates:
+42.34724, -83.03568
42°20'50" N, 83°02'08" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.

Facts

Name:M-3 (GRATIOT AVE) over GTW RR
Structure number:000000000011326
Old structure number:82182072000R010 (from 1992 edition)
Location:IN DETROIT
Purpose:Carries highway over railroad
Route classification:Other Principal Arterial (Urban) [14]
Length of largest span:44.0 ft. [13.4 m]
Total length:85.0 ft. [25.9 m]
Roadway width between curbs:89.9 ft. [27.4 m]
Deck width edge-to-edge:119.8 ft. [36.5 m]
Skew angle:34°
Owner:State Highway Agency [01]
Year built:1929
Year reconstructed:1970
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:M 18 / H 20 [4]
Number of main spans:2
Main spans material:Steel [3]
Main spans design:Stringer/Multi-beam or girder [02]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Integral Concrete (separate non-modified layer of concrete added to structural deck) [2]

Latest Available Inspection: September 2016

Good/Fair/Poor Condition:Poor
Status:Open, no restriction [A]
Average daily traffic:19,649 [as of 2007]
Truck traffic:6% of total traffic
Deck condition:Poor [4 out of 9]
Superstructure condition:Fair [5 out of 9]
Substructure condition:Satisfactory [6 out of 9]
Structural appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Deck geometry appraisal:Superior to present desirable criteria [9]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Scour condition:Bridge not over waterway. [N]
Operating rating:64.9 tons [59.0 metric tons]
Inventory rating:38.8 tons [35.3 metric tons]
Sufficiency rating:73.0

Previous Inspections

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
September 201673.0PoorPoorFairSatisfactorySD19649
September 201485.5PoorPoor-SatisfactorySD19649
September 201245.6PoorPoor-SatisfactorySD19649
September 201037.6FairFairFairGoodFO19649
September 200837.6FairFairFairGoodFO19649
September 200638.6FairSatisfactoryFairGoodFO20529
December 200535.6PoorPoorFairFairSD20529
September 200335.6PoorPoorFairFairSD33000
September 200135.6PoorPoorFairFairSD33000
September 199931.6PoorPoorFairFairSD33000
October 199731.6PoorPoorFairFairSD33000
October 199533.3FairFairSatisfactoryFairFO23800
December 199344.3FairGoodSatisfactorySatisfactoryFO23800
June 199151.4FairGoodSatisfactorySatisfactoryFO23800