US 31 over 21 ST AVE SO


+33.49168, -86.78677
33°29'30" N, 86°47'12" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.


Name:US 31 over 21 ST AVE SO
Structure number:008235
Old structure number:00000003370097A (from 1992 edition)
Location:US 31 * 21 ST AVE SO
Purpose:Carries highway over highway
Route classification:Other Principal Arterial (Urban) [14]
Length of largest span:74.2 ft. [22.6 m]
Total length:194.9 ft. [59.4 m]
Roadway width between curbs:40.0 ft. [12.2 m]
Deck width edge-to-edge:43.0 ft. [13.1 m]
Vertical clearance below bridge:18.4 ft. [5.6 m]
Skew angle:25°
Owner:State Highway Agency [01]
Year built:1964
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:3
Main spans material:Concrete continuous [2]
Main spans design:Tee beam [04]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Monolithic Concrete (concurrently placed with structural deck) [1]

Latest Available Inspection: February 2015 

Status:Open, no restriction [A]
Average daily traffic:39,880 [as of 2015]
Truck traffic:3% of total traffic
Deck condition:Satisfactory [6 out of 9]
Superstructure condition:Satisfactory [6 out of 9]
Substructure condition:Good [7 out of 9]
Structural appraisal:Equal to present minimum criteria [6]
Deck geometry appraisal:Better than present minimum criteria [7]
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:50.3 tons [45.7 metric tons]
Inventory rating:30.1 tons [27.4 metric tons]
Sufficiency rating:87.4
Estimated cost of work:$2,264,000

Previous Inspections 

DateSuff. ratingEvaluationDeckSuper.Sub.ADT
February 201587.4Not deficientSatisfactorySatisfactoryGood39880
February 201387.4Not deficientSatisfactorySatisfactoryGood39965
February 201187.4Not deficientSatisfactorySatisfactoryGood39030
February 200987.1Not deficientGoodGoodGood42145
February 200792.4Not deficientGoodGoodGood37770
February 200592.6Not deficientGoodGoodVery Good35920
February 200392.6Not deficientGoodGoodVery Good35780
April 200192.6Not deficientGoodGoodVery Good35780
April 199991.9Not deficientGoodGoodVery Good42545
December 199692.2Not deficientGoodGoodVery Good39815
January 199593.0Not deficientGoodGoodVery Good39245
December 199292.1Not deficientGoodGoodVery Good37690
November 199092.0Not deficientGoodGoodGood39660