I124 SBL over W.12TH ST (FAU 4425)


+35.04265, -85.31462
35°02'34" N, 85°18'53" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:I124 SBL over W.12TH ST (FAU 4425)
Structure number:33I01240012
Location:4.2 MI S OF TN RIVER
Purpose:Carries highway over highway
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:64.0 ft. [19.5 m]
Total length:148.0 ft. [45.1 m]
Roadway width between curbs:47.9 ft. [14.6 m]
Deck width edge-to-edge:49.2 ft. [15.0 m]
Vertical clearance below bridge:13.1 ft. [4.0 m]
Skew angle:
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:3
Main spans material:Steel [3]
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:Basically intolerable requiring high priority of replacement [2]
Underclearances appraisal:Equal to present minimum criteria [6]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Scour condition:Bridge not over waterway. [N]
Sufficiency rating:71.3
Recommended work:Widening of existing bridge with deck rehabilitation or replacement. [34]
Estimated cost of work:$1,240,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
August 2018FairGoodSatisfactoryGood7355071.3
August 2016FairGoodSatisfactoryGood7211071.4
August 2014FairGoodSatisfactoryGood6953071.5
August 2012FairSatisfactoryFairFair7960058.9
August 2010FairSatisfactoryFairFair8101061.1
September 2008PoorPoorFairFair7865058.0
August 2006PoorPoorFairFair6880058.7
September 2004PoorPoorFairFair6958058.7
September 2002PoorPoorSatisfactorySatisfactory6922088.6
October 2000PoorPoorGoodFair6047078.5
September 1998FairFairGoodFair6263076.3
August 1996FairSatisfactoryGoodGood6800086.5
January 1995FairSatisfactoryGoodGood6284088.2
December 1992FairSatisfactoryGoodGood3835090.1
February 1991FairSatisfactoryGoodGood3835090.1

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
Steel Girder/Beamlinear ft.1,3321,332000
Reinforced Concrete Decksq. ft.7,4007,400000
Wearing Surfacessq. ft.7,1047,104000
Reinforced Concrete Columneach84220
Reinforced Concrete Abutmentlinear ft.120972030
Reinforced Concrete Pier Caplinear ft.100100000
Movable Bearingeach38201800
Fixed Bearingeach1818000
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.148148000