SR 471 over I 20

This bridge is no longer in the current National Bridge Inventory database, and has likely been demolished or abandoned.


+32.27913, -89.99369
32°16'45" N, 89°59'37" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:SR 471 over I 20
Structure number:310047106100050
Location:SR 471 OVER I 20
Purpose:Carries highway over highway
Route classification:Minor Arterial (Urban) [16]
Length of largest span:82.0 ft. [25.0 m]
Total length:286.1 ft. [87.2 m]
Roadway width between curbs:27.9 ft. [8.5 m]
Deck width edge-to-edge:32.8 ft. [10.0 m]
Vertical clearance below bridge:20.7 ft. [6.3 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 / HS 20 [5]
Number of main spans:4
Main spans material:Concrete continuous [2]
Main spans design:Box beam or girders - Multiple [05]
Deck type:Concrete Cast-in-Place [1]

Latest Available Inspection: October 2014

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:16,000 [as of 2012]
Truck traffic:3% of total traffic
Deck condition:Fair [5 out of 9]
Superstructure condition:Fair [5 out of 9]
Substructure condition:Very Good [8 out of 9]
Structural appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Deck geometry appraisal:Meets minimum tolerable limits to be left in place as is [4]
Underclearances appraisal:Equal to present minimum criteria [6]
Roadway alignment appraisal:Better than present minimum criteria [7]
Scour condition:Bridge not over waterway. [N]
Sufficiency rating:55.0
Recommended work:Widening of existing bridge with deck rehabilitation or replacement. [34]
Estimated cost of work:$383,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
October 2014FairFairFairVery Good1600055.0
October 2012FairFairFairVery Good930055.0
September 2010FairFairFairVery Good660055.0
September 2008GoodVery GoodVery GoodVery Good1900067.0
December 2006GoodVery GoodVery GoodVery Good1400065.0
December 2004GoodVery GoodVery GoodVery Good1400068.0
December 2002GoodVery GoodVery GoodVery Good1200068.0
November 2000GoodVery GoodVery GoodVery Good800067.9
November 1998GoodVery GoodVery GoodVery Good800067.9
March 1997GoodVery GoodVery GoodVery Good800067.9
February 1995GoodVery GoodVery GoodVery Good700067.9
May 1993GoodVery GoodVery GoodVery Good300073.9
July 1991GoodVery GoodVery GoodVery Good284074.4
October 1989GoodVery GoodVery GoodVery Good450069.4