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


+35.00428, -85.21160
35°00'15" N, 85°12'42" 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 2018

Good/Fair/Poor Condition:Good
Status:Open, no restriction [A]
Average daily traffic:23,030 [as of 2019]
Truck traffic:20% of total traffic
Deck condition:Good [7 out of 9]
Superstructure condition:Good [7 out of 9]
Substructure condition:Good [7 out of 9]
Structural appraisal:Better than present minimum criteria [7]
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]
Sufficiency rating:74.6
Recommended work:Widening of existing bridge or other major structure without deck rehabilitation or replacement [33]
Estimated cost of work:$2,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
July 2018GoodGoodGoodGood2303074.6
July 2016GoodGoodGoodGood2303074.6
July 2014FairSatisfactorySatisfactorySatisfactory2303075.6
July 2012FairSatisfactorySatisfactorySatisfactory2303075.6
July 2010FairSatisfactorySatisfactorySatisfactory2303075.6
July 2008FairSatisfactorySatisfactorySatisfactory2303075.6
July 2006FairSatisfactorySatisfactorySatisfactory2303075.6
August 2004FairSatisfactorySatisfactorySatisfactory2303075.6
August 2002FairSatisfactorySatisfactorySatisfactory2303075.6
September 2000FairSatisfactorySatisfactorySatisfactory10754061.0
September 1998GoodGoodGoodGood11571060.0
August 1996GoodGoodGoodGood8382060.0
November 1994GoodGoodGoodGood7721061.0
October 1992GoodGoodGoodGood5484063.0
December 1990GoodGoodGoodGood5484061.0

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
Prestressed Concrete Closed Web/Box Girderlinear ft.1,8141,72864220
Reinforced Concrete Decksq. ft.6,1056,105000
Wearing Surfacessq. ft.5,7755,775000
Reinforced Concrete Columneach63030
Reinforced Concrete Abutmentlinear ft.1761363550
Reinforced Concrete Pier Caplinear ft.114832650
Elastomeric Bearingeach6666000
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.3303180120