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 2016

Good/Fair/Poor Condition:Good
Status:Open, no restriction [A]
Average daily traffic:23,030 [as of 2017]
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 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, 2018 edition. This feature is experimental.
Prestressed Concrete Closed Web/Box Girderlinear ft.1,8151,815000
Reinforced Concrete Decksq. ft.6,1056,105000
Wearing Surfacessq. ft.5,7755,775000
Reinforced Concrete Columneach66000
Reinforced Concrete Abutmentlinear ft.176176000
Elastomeric Bearingeach6666000
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.330330000