I-75 SBL over I-75 / I-24 EB


+35.00417, -85.21139
35°00'15" N, 85°12'41" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.


Name:I-75 SBL over I-75 / I-24 EB
Structure number:33I00240067
Location:I-24 JUNCTION
Purpose:Carries highway over highway
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:67.9 ft. [20.7 m]
Total length:184.1 ft. [56.1 m]
Roadway width between curbs:29.9 ft. [9.1 m]
Deck width edge-to-edge:36.4 ft. [11.1 m]
Vertical clearance below bridge:16.4 ft. [5.0 m]
Skew angle:51°
Owner:State Highway Agency [01]
Year built:1959
Historic significance:Historical significance is not determinable at this time [4]
Design load:MS 18+Mod / HS 20+Mod [6]
Number of main spans:3
Main spans material:Prestressed concrete [5]
Main spans design:Box beam or girders - Multiple [05]
Deck type:Other [9]
Wearing surface:Bituminous [6]

Latest Available Inspection: July 2014 

Status:Open, no restriction [A]
Average daily traffic:23,030 [as of 2015]
Truck traffic:20% of total traffic
Deck condition:Satisfactory [6 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:Meets minimum tolerable limits to be left in place as is [4]
Roadway alignment appraisal:Equal to present minimum criteria [6]
Scour condition:Bridge not over waterway. [N]
Operating rating:85.1 tons [77.4 metric tons]
Inventory rating:35.6 tons [32.4 metric tons]
Evaluation:Functionally obsolete [2]
Sufficiency rating:75.6
Recommended work:Widening of existing bridge or other major structure without deck rehabilitation or replacement [33]
Estimated cost of work:$2,000

Previous Inspections 

DateSuff. ratingEvaluationDeckSuper.Sub.ADT
July 201475.6Functionally obsoleteSatisfactorySatisfactorySatisfactory23030
July 201275.6Functionally obsoleteSatisfactorySatisfactorySatisfactory23030
July 201075.6Functionally obsoleteSatisfactorySatisfactorySatisfactory23030
July 200875.6Functionally obsoleteSatisfactorySatisfactorySatisfactory23030
July 200675.6Functionally obsoleteSatisfactorySatisfactorySatisfactory23030
August 200475.6Functionally obsoleteSatisfactorySatisfactorySatisfactory23030
August 200275.6Functionally obsoleteSatisfactorySatisfactorySatisfactory23030
September 200061.0Not deficientSatisfactorySatisfactorySatisfactory107540
September 199860.0Not deficientGoodGoodGood115710
August 199660.0Not deficientGoodGoodGood83820
November 199461.0Not deficientGoodGoodGood77210
October 199263.0Functionally obsoleteGoodGoodGood54840
December 199061.0Functionally obsoleteGoodGoodGood54840