I124 NBL over W.12TH ST (NFA 410)


+35.04167, -85.31667
35°02'30" N, 85°19'00" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:I124 NBL over W.12TH ST (NFA 410)
Structure number:33I01240011
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:39.0 ft. [11.9 m]
Deck width edge-to-edge:50.2 ft. [15.3 m]
Vertical clearance below bridge:18.7 ft. [5.7 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 2016

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:72,110 [as of 2015]
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: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]
Sufficiency rating:70.3
Recommended work:Widening of existing bridge with deck rehabilitation or replacement. [34]
Estimated cost of work:$421,000

Previous Inspections

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
August 201670.3FairFairSatisfactorySatisfactoryFO72110
August 201470.4FairFairSatisfactorySatisfactoryFO69530
August 201258.8FairFairSatisfactoryFairFO79600
August 201058.8PoorPoorSatisfactoryFairSD81010
September 200859.0PoorPoorSatisfactoryFairSD78650
August 200659.7PoorPoorSatisfactoryFairSD68800
September 200459.7PoorPoorSatisfactoryFairSD69580
September 200259.7PoorPoorSatisfactoryFairSD69220
October 200060.4PoorPoorSatisfactoryFairSD60470
October 199862.4FairFairSatisfactoryFairFO62630
August 199667.8FairSatisfactoryGoodSatisfactoryFO68000
January 199569.9FairSatisfactoryGoodSatisfactoryFO62840
December 199272.3FairSatisfactoryGoodSatisfactoryFO38350
February 199172.3FairSatisfactoryGoodSatisfactoryFO38350