US 31 over 21 ST AVE SO


+33.49160, -86.78695
33°29'30" N, 86°47'13" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.


Name:US 31 over 21 ST AVE SO
Structure number:008236
Old structure number:00000003370097B (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:42,050 [as of 2015]
Truck traffic:3% of total traffic
Deck condition:Satisfactory [6 out of 9]
Superstructure condition:Good [7 out of 9]
Substructure condition:Good [7 out of 9]
Structural appraisal:Equal to present minimum criteria [6]
Deck geometry appraisal:Meets minimum tolerable limits to be left in place as is [4]
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:67.0
Estimated cost of work:$2,264,000

Previous Inspections 

DateSuff. ratingEvaluationDeckSuper.Sub.ADT
February 201567.0Not deficientSatisfactoryGoodGood42050
February 201367.0Not deficientSatisfactoryGoodGood42135
February 201169.3Not deficientSatisfactoryGoodGood39495
February 200968.9Not deficientGoodGoodGood42650
February 200773.8Not deficientGoodGoodVery Good43100
February 200574.0Not deficientGoodGoodVery Good41120
February 200374.1Not deficientGoodGoodVery Good40915
April 200174.1Not deficientGoodGoodVery Good40915
April 199973.9Not deficientGoodGoodVery Good42545
December 199674.2Not deficientGoodGoodVery Good39815
January 199575.2Not deficientGoodGoodVery Good39245
December 199274.4Not deficientGoodGoodVery Good37690
November 199074.2Not deficientGoodVery GoodVery Good39660