I124 SBL over W.MAIN ST (FAU 3553)


+35.03972, -85.31750
35°02'23" N, 85°19'03" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:I124 SBL over W.MAIN ST (FAU 3553)
Structure number:33I01240010
Location:.01 MI FM SR58 W 20TH ST
Purpose:Carries highway over highway
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:56.1 ft. [17.1 m]
Total length:208.0 ft. [63.4 m]
Roadway width between curbs:36.1 ft. [11.0 m]
Deck width edge-to-edge:47.2 ft. [14.4 m]
Vertical clearance below bridge:16.7 ft. [5.1 m]
Skew angle:37°
Owner:State Highway Agency [01]
Year built:1963
Historic significance:Historical significance is not determinable at this time [4]
Design load:MS 18 / HS 20 [5]
Number of main spans:4
Main spans material:Steel continuous [4]
Main spans design:Stringer/Multi-beam or girder [02]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Monolithic Concrete (concurrently placed with structural deck) [1]

Latest Available Inspection: August 2016

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:72,110 [as of 2015]
Truck traffic:5% of total traffic
Deck condition:Good [7 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:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Underclearances appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Scour condition:Bridge not over waterway. [N]
Operating rating:51.5 tons [46.8 metric tons]
Inventory rating:30.7 tons [27.9 metric tons]
Sufficiency rating:82.1

Previous Inspections

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
August 201682.1FairGoodSatisfactoryGood-72110
August 201482.2FairGoodSatisfactoryGood-69530
August 201283.7FairVery GoodSatisfactorySatisfactory-79600
August 201086.9FairVery GoodSatisfactorySatisfactory-81010
August 200884.9FairFairSatisfactorySatisfactory-78650
August 200686.4FairFairSatisfactorySatisfactory-68800
August 200483.3PoorPoorSatisfactorySatisfactorySD69580
September 200285.4FairFairSatisfactorySatisfactory-69220
October 200087.9FairFairSatisfactorySatisfactory-60470
September 199881.5PoorSeriousSatisfactoryGoodSD62630
August 199675.8PoorSeriousSatisfactoryGoodSD75820
January 199579.2PoorSeriousSatisfactoryGoodSD55200
December 199280.0PoorSeriousSatisfactoryGoodSD46850
October 199080.0PoorSeriousSatisfactoryGoodSD46850