I-75 SBL over I75 NB TO I24 WB


+35.00292, -85.21208
35°00'11" N, 85°12'43" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:I-75 SBL over I75 NB TO I24 WB
Structure number:33I00750013
Location:I-24 JUNCTION
Purpose:Carries highway over highway
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:50.9 ft. [15.5 m]
Total length:148.0 ft. [45.1 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:46°
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:Fair
Status:Open, no restriction [A]
Average daily traffic:108,850 [as of 2017]
Truck traffic:20% of total traffic
Deck condition:Satisfactory [6 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:Better than present minimum criteria [7]
Roadway alignment appraisal:Equal to present minimum criteria [6]
Scour condition:Bridge not over waterway. [N]
Sufficiency rating:72.4
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 2018FairSatisfactorySatisfactoryGood10885072.4
July 2016FairSatisfactorySatisfactoryGood10777072.5
July 2014FairSatisfactorySatisfactorySatisfactory10837072.5
July 2012FairSatisfactorySatisfactorySatisfactory10843072.5
July 2010FairSatisfactorySatisfactorySatisfactory10805072.5
July 2008FairSatisfactorySatisfactorySatisfactory12140071.7
July 2006FairSatisfactorySatisfactorySatisfactory10909072.4
August 2004FairSatisfactorySatisfactorySatisfactory10016073.0
August 2002FairGoodSatisfactorySatisfactory9639073.2
September 2000FairGoodSatisfactorySatisfactory8714061.0
September 1998FairGoodSatisfactorySatisfactory8663059.0
August 1996FairGoodSatisfactorySatisfactory8382061.0
November 1994FairGoodSatisfactorySatisfactory7721061.0
October 1992FairGoodSatisfactorySatisfactory5484066.0
November 1990FairGoodSatisfactorySatisfactory5484066.0

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
Prestressed Concrete Closed Web/Box Girderlinear ft.1,6281,5824150
Reinforced Concrete Decksq. ft.5,4025,401100
Wearing Surfacessq. ft.5,0325,032000
Reinforced Concrete Columneach65100
Reinforced Concrete Abutmentlinear ft.1356055200
Reinforced Concrete Pier Caplinear ft.92246080
Elastomeric Bearingeach3333000
Fixed Bearingeach3333000
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.296296000