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


+35.04250, -85.31444
35°02'33" N, 85°18'52" 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:14.8 ft. [4.5 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 2014 

Status:Open, no restriction [A]
Average daily traffic:69,530 [as of 2014]
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]
Operating rating:57.4 tons [52.2 metric tons]
Inventory rating:34.7 tons [31.5 metric tons]
Evaluation:Functionally obsolete [2]
Sufficiency rating:71.5
Recommended work:Widening of existing bridge with deck rehabilitation or replacement. [34]
Estimated cost of work:$1,240,000

Previous Inspections 

DateSuff. ratingEvaluationDeckSuper.Sub.ADT
August 201471.5Functionally obsoleteGoodSatisfactoryGood69530
August 201258.9Functionally obsoleteSatisfactoryFairFair79600
August 201061.1Functionally obsoleteSatisfactoryFairFair81010
September 200858.0Structurally deficientPoorFairFair78650
August 200658.7Structurally deficientPoorFairFair68800
September 200458.7Structurally deficientPoorFairFair69580
September 200288.6Structurally deficientPoorSatisfactorySatisfactory69220
October 200078.5Structurally deficientPoorGoodFair60470
September 199876.3Functionally obsoleteFairGoodFair62630
August 199686.5Not deficientSatisfactoryGoodGood68000
January 199588.2Not deficientSatisfactoryGoodGood62840
December 199290.1Not deficientSatisfactoryGoodGood38350
February 199190.1Not deficientSatisfactoryGoodGood38350