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ROSA PARKS (12TH) over I-75

Map 

Coordinates:
+42.33342, -83.07318
42°20'00" N, 83°04'23" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.

Facts 

Name:ROSA PARKS (12TH) over I-75
Structure number:000000000011761
Old structure number:82182195000S020 (from 1992 edition)
Location:IN DETROIT
Purpose:Carries highway and pedestrian walkway over highway
Route classification:Minor Arterial (Urban) [16]
Length of largest span:63.0 ft. [19.2 m]
Total length:284.8 ft. [86.8 m]
Roadway width between curbs:73.8 ft. [22.5 m]
Deck width edge-to-edge:88.9 ft. [27.1 m]
Vertical clearance below bridge:15.1 ft. [4.6 m]
Owner:State Highway Agency [01]
Year built:1970
Year reconstructed:1998
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:6
Main spans material:Steel continuous [4]
Main spans design:Stringer/Multi-beam or girder [02]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Epoxy Overlay [5]

Latest Available Inspection: May 2015 

Status:Open, no restriction [A]
Average daily traffic:9,270 [as of 1978]
Truck traffic:3% of total traffic
Deck condition:Fair [5 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]
Underclearances appraisal:Meets minimum tolerable limits to be left in place as is [4]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Scour condition:Bridge not over waterway. [N]
Operating rating:59.5 tons [54.1 metric tons]
Inventory rating:34.2 tons [31.1 metric tons]
Sufficiency rating:95.2

Previous Inspections 

DateSuff. ratingEvaluationDeckSuper.Sub.ADT
May 201595.2Not deficientFairGoodGood9270
May 201395.2Not deficientFairGoodGood9270
May 201195.7Not deficientFairGoodGood9270
May 200992.7Not deficientFairGoodGood9270
July 200792.7Not deficientFairGoodGood9270
August 200592.7Not deficientFairGoodGood9270
August 200392.7Not deficientFairGoodGood9270
August 200192.6Not deficientFairGoodGood9270
May 200092.6Not deficientFairGoodGood9270
September 199992.6Not deficientFairGoodGood9270
August 199828.2Not deficientSeriousFairCritical9270
June 199784.4Not deficientFairSatisfactoryFair9270
August 199493.5Structurally deficientPoorSatisfactoryGood9270
July 199293.5Structurally deficientPoorGoodGood9270
June 199093.5Structurally deficientPoorGoodSatisfactory9270