+32.30287, -90.16665
32°18'10" N, 90°09'60" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.


Name:I 55 over HIGH STREET
Structure number:11000550250951A
Location:1.9 MI N JCT I 55 I 20
Purpose:Carries highway over highway
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:50.9 ft. [15.5 m]
Total length:287.1 ft. [87.5 m]
Roadway width between curbs:55.4 ft. [16.9 m]
Deck width edge-to-edge:59.4 ft. [18.1 m]
Vertical clearance below bridge:17.4 ft. [5.3 m]
Owner:State Highway Agency [01]
Year built:1967
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:MS 18+Mod / HS 20+Mod [6]
Number of main spans:4
Main spans material:Prestressed concrete [5]
Main spans design:Stringer/Multi-beam or girder [02]
Deck type:Concrete Cast-in-Place [1]

Latest Available Inspection: June 2014 

Status:Open, no restriction [A]
Average daily traffic:52,500 [as of 2012]
Truck traffic:20% of total traffic
Deck condition:Good [7 out of 9]
Superstructure condition:Very Good [8 out of 9]
Substructure condition:Very Good [8 out of 9]
Structural appraisal:Equal to present desirable criteria [8]
Deck geometry appraisal:Equal to present minimum criteria [6]
Underclearances 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:61.1 tons [55.5 metric tons]
Inventory rating:52.8 tons [48.0 metric tons]
Sufficiency rating:94.5

Previous Inspections 

DateSuff. ratingEvaluationDeckSuper.Sub.ADT
June 201494.5Not deficientGoodVery GoodVery Good52500
July 201293.5Not deficientGoodVery GoodVery Good74000
June 201093.5Not deficientVery GoodVery GoodVery Good74000
June 200893.5Not deficientVery GoodVery GoodVery Good53000
October 200693.6Not deficientVery GoodVery GoodVery Good52000
October 200495.7Not deficientVery GoodVery GoodVery Good50000
August 200295.8Not deficientVery GoodVery GoodVery Good47500
October 200096.1Not deficientVery GoodVery GoodVery Good40500
August 199896.1Not deficientVery GoodVery GoodVery Good40500
November 199698.0Not deficientVery GoodVery GoodVery Good40500
January 199598.0Not deficientVery GoodVery GoodVery Good34500
June 199198.0Not deficientVery GoodVery GoodVery Good29980