I124 NBL over I-124-RL / W. 9TH ST.


+35.04625, -85.31387
35°02'47" N, 85°18'50" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:I124 NBL over I-124-RL / W. 9TH ST.
Structure number:33I01240013
Location:3 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:198.2 ft. [60.4 m]
Roadway width between curbs:38.1 ft. [11.6 m]
Deck width edge-to-edge:49.2 ft. [15.0 m]
Vertical clearance below bridge:16.4 ft. [5.0 m]
Skew angle:26°
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:Prestressed concrete [5]
Main spans design:Box beam or girders - Multiple [05]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Bituminous [6]

Latest Available Inspection: August 2016

Good/Fair/Poor Condition:Poor
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:Poor [4 out of 9]
Substructure condition:Satisfactory [6 out of 9]
Structural appraisal:Meets minimum tolerable limits to be left in place as is [4]
Deck geometry appraisal:Basically intolerable requiring high priority of replacement [2]
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:43.4
Recommended work:Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Estimated cost of work:$2,554,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
August 2016PoorGoodPoorSatisfactory7211043.4
August 2014PoorGoodPoorSatisfactory6953043.7
August 2012FairGoodSatisfactorySatisfactory7960070.1
August 2010FairGoodSatisfactorySatisfactory8101073.0
January 2010FairSatisfactoryFairFair7865059.2
September 2008FairSatisfactoryFairFair6843060.0
August 2006FairSatisfactoryFairFair6875062.0
September 2004FairSatisfactoryFairFair6810061.0
September 2002FairSatisfactoryFairFair6585061.1
October 2000FairSatisfactoryFairFair5962068.0
October 1998FairSatisfactoryFairFair6004066.0
August 1996FairGoodSatisfactorySatisfactory6800076.0
January 1995GoodGoodGoodGood6284076.0
December 1992GoodGoodGoodGood3835076.0
April 1991GoodGoodGoodGood3835076.0

Element Data

Source: National Bridge Elements dataset, 2018 edition. This feature is experimental.
Prestressed Concrete Closed Web/Box Girderlinear ft.2,3762,31610500
Reinforced Concrete Decksq. ft.9,9009,900000
Reinforced Concrete Columneach99000
Reinforced Concrete Abutmentlinear ft.10093700
Reinforced Concrete Pier Caplinear ft.1501330170
Elastomeric Bearingeach4848000
Fixed Bearingeach4848000
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.396396000