I124 SBL over W.MAIN ST (FAU 3553)


+35.03975, -85.31768
35°02'23" N, 85°19'04" 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:16.4 ft. [5.0 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 2018

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:73,550 [as of 2017]
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]
Sufficiency rating:82.0

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
August 2018FairGoodSatisfactoryGood7355082.0
August 2016FairGoodSatisfactoryGood7211082.1
August 2014FairGoodSatisfactoryGood6953082.2
August 2012FairVery GoodSatisfactorySatisfactory7960083.7
August 2010FairVery GoodSatisfactorySatisfactory8101086.9
August 2008FairFairSatisfactorySatisfactory7865084.9
August 2006FairFairSatisfactorySatisfactory6880086.4
August 2004PoorPoorSatisfactorySatisfactory6958083.3
September 2002FairFairSatisfactorySatisfactory6922085.4
October 2000FairFairSatisfactorySatisfactory6047087.9
September 1998PoorSeriousSatisfactoryGood6263081.5
August 1996PoorSeriousSatisfactoryGood7582075.8
January 1995PoorSeriousSatisfactoryGood5520079.2
December 1992PoorSeriousSatisfactoryGood4685080.0
October 1990PoorSeriousSatisfactoryGood4685080.0

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
Steel Girder/Beamlinear ft.1,6641,144500200
Reinforced Concrete Decksq. ft.9,9849,984000
Reinforced Concrete Columneach1212000
Reinforced Concrete Abutmentlinear ft.9696000
Reinforced Concrete Pier Caplinear ft.144144000
Movable Bearingeach28135100
Fixed Bearingeach88000
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.208208000