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


+35.05194, -85.31361
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:23.6 ft. [7.2 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: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]
Operating rating:39.6 tons [36.0 metric tons]
Inventory rating:23.8 tons [21.6 metric tons]
Evaluation:Functionally obsolete [2]
Sufficiency rating:45.3
Recommended work:Widening of existing bridge or other major structure without deck rehabilitation or replacement [33]
Estimated cost of work:$746,000

Previous Inspections 

DateSuff. ratingEvaluationDeckSuper.Sub.ADT
August 201445.3Functionally obsoleteGoodGoodFair71020
August 201255.0Functionally obsoleteSatisfactorySatisfactorySatisfactory80380
August 201067.3Functionally obsoleteSatisfactorySatisfactorySatisfactory82480
September 200854.1Functionally obsoleteFairFairFair79870
August 200657.3Functionally obsoleteFairFairFair68750
September 200454.3Functionally obsoleteFairFairFair68100
September 200254.8Functionally obsoleteFairFairFair61700
October 200059.8Functionally obsoleteFairFairFair55100
October 199857.8Functionally obsoleteFairFairFair59080
August 199670.8Functionally obsoleteFairSatisfactorySatisfactory63650
January 199573.0Functionally obsoleteFairGoodGood71850
December 199271.0Functionally obsoleteFairGoodGood47150
April 199171.0Functionally obsoleteFairGoodGood47150