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


+35.05194, -85.31389
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 2014 

Status:Open, no restriction [A]
Average daily traffic:71,020 [as of 2014]
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]
Operating rating:38.6 tons [35.1 metric tons]
Inventory rating:22.8 tons [20.7 metric tons]
Evaluation:Functionally obsolete [2]
Sufficiency rating:54.0
Recommended work:Widening of existing bridge with deck rehabilitation or replacement. [34]
Estimated cost of work:$964,000

Previous Inspections 

DateSuff. ratingEvaluationDeckSuper.Sub.ADT
August 201454.0Functionally obsoleteFairSatisfactorySatisfactory71020
August 201253.2Functionally obsoleteFairSatisfactorySatisfactory80380
August 201068.6Functionally obsoleteFairSatisfactorySatisfactory82480
September 200855.6Functionally obsoleteFairFairFair79870
August 200658.7Functionally obsoleteFairFairFair68750
September 200459.8Functionally obsoleteFairFairFair68100
September 200257.3Functionally obsoleteFairFairFair61700
October 200062.0Functionally obsoleteFairFairFair55100
October 199860.0Functionally obsoleteFairFairFair59080
August 199662.0Functionally obsoleteFairFairFair63650
January 199573.0Functionally obsoleteFairSatisfactorySatisfactory71850
December 199290.0Not deficientFairSatisfactorySatisfactory47150
April 199190.0Not deficientFairSatisfactorySatisfactory47150