I124 NBL over W. 4TH ST (SR 389)


+35.05205, -85.31372
35°03'07" N, 85°18'49" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:I124 NBL over W. 4TH ST (SR 389)
Structure number:33I01240017
Location:1 MI S OF TN RIVER
Purpose:Carries highway over highway
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:42.0 ft. [12.8 m]
Total length:160.1 ft. [48.8 m]
Roadway width between curbs:25.9 ft. [7.9 m]
Deck width edge-to-edge:32.2 ft. [9.8 m]
Vertical clearance below bridge:23.0 ft. [7.0 m]
Skew angle:10°
Owner:State Highway Agency [01]
Year built:1958
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:Concrete [1]
Main spans design:Tee beam [04]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Bituminous [6]

Latest Available Inspection: August 2018

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:75,960 [as of 2017]
Truck traffic:5% of total traffic
Deck condition:Good [7 out of 9]
Superstructure condition:Good [7 out of 9]
Substructure condition:Fair [5 out of 9]
Structural appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Deck geometry appraisal:Basically intolerable requiring high priority of replacement [2]
Underclearances appraisal:Basically intolerable requiring high priority of corrrective action [3]
Roadway alignment appraisal:Equal to present minimum criteria [6]
Scour condition:Bridge not over waterway. [N]
Sufficiency rating:44.8
Recommended work:Widening of existing bridge or other major structure without deck rehabilitation or replacement [33]
Estimated cost of work:$746,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
August 2018FairGoodGoodFair7596044.8
August 2016FairGoodGoodFair7440044.9
August 2014FairGoodGoodFair7102045.3
August 2012FairSatisfactorySatisfactorySatisfactory8038055.0
August 2010FairSatisfactorySatisfactorySatisfactory8248067.3
September 2008FairFairFairFair7987054.1
August 2006FairFairFairFair6875057.3
September 2004FairFairFairFair6810054.3
September 2002FairFairFairFair6170054.8
October 2000FairFairFairFair5510059.8
October 1998FairFairFairFair5908057.8
August 1996FairFairSatisfactorySatisfactory6365070.8
January 1995FairFairGoodGood7185073.0
December 1992FairFairGoodGood4715071.0
April 1991FairFairGoodGood4715071.0

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
Steel Girder/Beamlinear ft.800800000
Reinforced Concrete Decksq. ft.5,2805,280000
Reinforced Concrete Columneach99000
Reinforced Concrete Abutmentlinear ft.94712300
Reinforced Concrete Pier Caplinear ft.9999000
Movable Bearingeach2002000
Fixed Bearingeach2020000
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.320320000