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


+35.05195, -85.31393
35°03'07" N, 85°18'50" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:I124 SBL over W. 4TH ST (SR 389)
Structure number:33I01240018
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:38.1 ft. [11.6 m]
Deck width edge-to-edge:44.0 ft. [13.4 m]
Vertical clearance below bridge:16.4 ft. [5.0 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:Fair [5 out of 9]
Superstructure condition:Satisfactory [6 out of 9]
Substructure condition:Satisfactory [6 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:52.5
Recommended work:Widening of existing bridge with deck rehabilitation or replacement. [34]
Estimated cost of work:$964,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
August 2018FairFairSatisfactorySatisfactory7596052.5
August 2016PoorPoorSatisfactorySatisfactory7440050.4
August 2014FairFairSatisfactorySatisfactory7102054.0
August 2012FairFairSatisfactorySatisfactory8038053.2
August 2010FairFairSatisfactorySatisfactory8248068.6
September 2008FairFairFairFair7987055.6
August 2006FairFairFairFair6875058.7
September 2004FairFairFairFair6810059.8
September 2002FairFairFairFair6170057.3
October 2000FairFairFairFair5510062.0
October 1998FairFairFairFair5908060.0
August 1996FairFairFairFair6365062.0
January 1995FairFairSatisfactorySatisfactory7185073.0
December 1992FairFairSatisfactorySatisfactory4715090.0
April 1991FairFairSatisfactorySatisfactory4715090.0

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
Reinforced Concrete Girder/Beamlinear ft.960960000
Reinforced Concrete Decksq. ft.6,8806,880000
Reinforced Concrete Columneach1212000
Reinforced Concrete Abutmentlinear ft.114114000
Reinforced Concrete Pier Caplinear ft.135135000
Movable Bearingeach1818000
Fixed Bearingeach3030000
Bridge Rail
Steel or Aluminum Bridge Raillinear ft.320320000