I-75 SBL over I75 NB TO I24 WB


+35.00278, -85.21194
35°00'10" 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:17.1 ft. [5.2 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 2014 

Status:Open, no restriction [A]
Average daily traffic:108,370 [as of 2014]
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:Better than present minimum criteria [7]
Roadway alignment appraisal:Equal to present minimum criteria [6]
Scour condition:Bridge not over waterway. [N]
Operating rating:98.0 tons [89.1 metric tons]
Inventory rating:35.6 tons [32.4 metric tons]
Evaluation:Functionally obsolete [2]
Sufficiency rating:72.5
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 201472.5Functionally obsoleteSatisfactorySatisfactorySatisfactory108370
July 201272.5Functionally obsoleteSatisfactorySatisfactorySatisfactory108430
July 201072.5Functionally obsoleteSatisfactorySatisfactorySatisfactory108050
July 200871.7Functionally obsoleteSatisfactorySatisfactorySatisfactory121400
July 200672.4Functionally obsoleteSatisfactorySatisfactorySatisfactory109090
August 200473.0Functionally obsoleteSatisfactorySatisfactorySatisfactory100160
August 200273.2Functionally obsoleteGoodSatisfactorySatisfactory96390
September 200061.0Functionally obsoleteGoodSatisfactorySatisfactory87140
September 199859.0Functionally obsoleteGoodSatisfactorySatisfactory86630
August 199661.0Functionally obsoleteGoodSatisfactorySatisfactory83820
November 199461.0Functionally obsoleteGoodSatisfactorySatisfactory77210
October 199266.0Functionally obsoleteGoodSatisfactorySatisfactory54840
November 199066.0Functionally obsoleteGoodSatisfactorySatisfactory54840