I-75 over SR 42


+33.05364, -83.95104
33°03'13" N, 83°57'04" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:I-75 over SR 42
Structure number:000000020700450
Location:.5 MI NW OF FORSYTH
Purpose:Carries highway over highway
Route classification:Principal Arterial - Interstate (Rural) [01]
Length of largest span:68.9 ft. [21.0 m]
Total length:179.1 ft. [54.6 m]
Roadway width between curbs:143.4 ft. [43.7 m]
Deck width edge-to-edge:149.9 ft. [45.7 m]
Vertical clearance below bridge:13.1 ft. [4.0 m]
Skew angle:26°
Owner:State Highway Agency [01]
Year built:1968
Year reconstructed:1989
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:3
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: September 2018

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:66,760 [as of 2011]
Truck traffic:1% of total traffic
Deck condition:Satisfactory [6 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:Superior to present desirable criteria [9]
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:91.6
Estimated cost of work:$2,766,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
September 2018FairSatisfactoryGoodGood6676091.6
October 2016FairSatisfactoryGoodGood6676091.6
October 2014FairSatisfactoryGoodGood6676091.6
October 2012FairSatisfactoryGoodGood6676091.6
October 2010FairSatisfactoryGoodGood7467091.3
November 2008FairSatisfactoryGoodGood7467094.2
November 2006FairSatisfactoryGoodGood7125094.4
October 2004FairSatisfactoryGoodGood7509094.2
November 2002FairSatisfactoryGoodGood5930094.9
December 2000FairSatisfactoryVery GoodGood6470094.7
November 1998FairSatisfactoryGoodSatisfactory6470094.7
August 1996GoodGoodGoodGood6470095.0
October 1994GoodGoodGoodGood5140094.1
February 1993GoodGoodGoodGood4842094.4
March 1991GoodGoodGoodVery Good4663094.5

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
Steel Girder/Beamlinear ft.3,7593,752070
Steel Protective Coatingsq. ft.32,91032,910000
Reinforced Concrete Decksq. ft.26,85026,13072000
Reinforced Concrete Columneach1616000
Reinforced Concrete Abutmentlinear ft.3342548000
Reinforced Concrete Pier Caplinear ft.330330000
Pourable Jointlinear ft.312003120
Compression Jointlinear ft.312312000
Movable Bearingeach4204200
Steel Protective Coatingsq. ft.8400840
Fixed Bearingeach42212100
Steel Protective Coatingsq. ft.84420420
Bridge Rail
Steel or Aluminum Bridge Raillinear ft.234234000
Reinforced Concrete Bridge Raillinear ft.303303000