I124 NBL over W.MAIN ST (FAU 3553)


+35.03944, -85.31750
35°02'22" N, 85°19'03" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:I124 NBL over W.MAIN ST (FAU 3553)
Structure number:33I01240009
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:51.5 ft. [15.7 m]
Deck width edge-to-edge:62.7 ft. [19.1 m]
Vertical clearance below bridge:14.8 ft. [4.5 m]
Skew angle:40°
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:Fair [5 out of 9]
Substructure condition:Good [7 out of 9]
Structural appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
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:52.5 tons [47.7 metric tons]
Inventory rating:31.7 tons [28.8 metric tons]
Sufficiency rating:76.7

Previous Inspections

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
August 201676.7FairGoodFairGood-72110
August 201488.4GoodGoodGoodGood-69530
August 201289.9GoodVery GoodGoodGood-79600
August 201092.1GoodExcellentGoodGood-81010
August 200878.5FairFairFairSatisfactory-78650
August 200691.7FairFairSatisfactorySatisfactory-68800
August 200491.6FairFairSatisfactorySatisfactory-69580
September 200291.6FairFairSatisfactorySatisfactory-69220
October 200078.0FairFairSatisfactorySatisfactory-60470
October 199870.0PoorSeriousSatisfactorySatisfactorySD62630
September 199874.0PoorSeriousSatisfactoryGoodSD62630
August 199671.0PoorSeriousSatisfactoryGoodSD75820
January 199571.0PoorSeriousSatisfactoryGoodSD55200
December 199285.2PoorSeriousSatisfactoryGoodSD46850
October 199085.2PoorSeriousSatisfactoryGoodSD46850