I-75 (NBL) over SR 61 (US 411)


+34.24547, -84.77344
34°14'44" N, 84°46'24" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:I-75 (NBL) over SR 61 (US 411)
Structure number:000000001500930
Purpose:Carries highway over highway
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:88.9 ft. [27.1 m]
Total length:179.1 ft. [54.6 m]
Roadway width between curbs:67.6 ft. [20.6 m]
Deck width edge-to-edge:69.9 ft. [21.3 m]
Vertical clearance below bridge:16.4 ft. [5.0 m]
Skew angle:
Owner:State Highway Agency [01]
Year built:1970
Year reconstructed:1977
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:MS 18+Mod / HS 20+Mod [6]
Number of main spans:2
Main spans material:Steel continuous [4]
Main spans design:Stringer/Multi-beam or girder [02]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Monolithic Concrete (concurrently placed with structural deck) [1]

Latest Available Inspection: August 2016

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:64,580 [as of 2011]
Truck traffic:1% of total traffic
Deck condition:Satisfactory [6 out of 9]
Superstructure condition:Very Good [8 out of 9]
Substructure condition:Good [7 out of 9]
Structural appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Deck geometry appraisal:Equal to present minimum criteria [6]
Underclearances appraisal:Better than present minimum criteria [7]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Scour condition:Bridge not over waterway. [N]
Sufficiency rating:85.5
Estimated cost of work:$1,621,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
August 2016FairSatisfactoryVery GoodGood6458085.5
July 2014GoodGoodVery GoodGood6458085.5
July 2012GoodGoodVery GoodGood6458085.5
July 2010GoodGoodVery GoodGood6806085.5
October 2008GoodGoodVery GoodGood6806085.5
August 2006GoodGoodVery GoodGood6754084.0
August 2004GoodGoodVery GoodGood6613098.0
August 2002GoodGoodVery GoodGood5780098.0
August 2000GoodGoodVery GoodGood6010098.0
October 1998GoodGoodVery GoodGood6010098.0
August 1996GoodGoodGoodGood6010097.0
September 1994GoodGoodGoodVery Good6010097.0
October 1992GoodGoodGoodVery Good4508097.0
December 1990GoodGoodGoodVery Good4508097.0

Element Data

Source: National Bridge Elements dataset, 2018 edition. This feature is experimental.
Steel Girder/Beamlinear ft.1,9581,958000
Steel Protective Coatingsq. ft.19,36419,364000
Reinforced Concrete Decksq. ft.12,460012,46000
Reinforced Concrete Columneach44000
Reinforced Concrete Abutmentlinear ft.148148000
Reinforced Concrete Pier Caplinear ft.7307300
Compression Jointlinear ft.140001400
Movable Bearingeach2222000
Steel Protective Coatingsq. ft.2222000
Fixed Bearingeach1111000
Steel Protective Coatingsq. ft.1111000
Bridge Rail
Steel or Aluminum Bridge Raillinear ft.356356000
Reinforced Concrete Bridge Raillinear ft.356356000