US-23 SB over I-75


+45.77221, -84.73440
45°46'20" N, 84°44'04" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:US-23 SB over I-75
Structure number:000000000002453
Old structure number:24124071000S010 (from 1992 edition)
Purpose:Carries highway over highway
Route classification:Minor Arterial (Rural) [06]
Length of largest span:112.9 ft. [34.4 m]
Total length:204.1 ft. [62.2 m]
Roadway width between curbs:33.1 ft. [10.1 m]
Deck width edge-to-edge:37.4 ft. [11.4 m]
Vertical clearance below bridge:13.1 ft. [4.0 m]
Skew angle:46°
Owner:State Highway Agency [01]
Year built:1957
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 [3]
Main spans design:Stringer/Multi-beam or girder [02]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Latex Concrete or similar additive [3]

Latest Available Inspection: August 2018

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:1,954 [as of 2007]
Truck traffic:9% of total traffic
Deck condition:Fair [5 out of 9]
Superstructure condition:Good [7 out of 9]
Substructure condition:Fair [5 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:Basically intolerable requiring high priority of corrrective action [3]
Roadway alignment appraisal:Equal to present minimum criteria [6]
Scour condition:Bridge not over waterway. [N]
Sufficiency rating:78.8

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
August 2018FairFairGoodFair195478.8
August 2016FairFairGoodFair195478.8
August 2014FairSatisfactoryGoodSatisfactory195489.8
March 2014FairSatisfactoryGoodSatisfactory195489.8
July 2012FairSatisfactoryGoodSatisfactory195489.8
March 2011FairSatisfactoryGoodSatisfactory195489.8
March 2009FairSatisfactoryGoodSatisfactory195489.8
March 2007FairSatisfactoryGoodSatisfactory87490.9
March 2005FairGoodGoodSatisfactory95090.9
March 2003FairGoodGoodSatisfactory95090.9
March 2001FairGoodGoodSatisfactory95090.9
June 1999FairGoodGoodSatisfactory95095.9
June 1997GoodGoodGoodGood95088.9
August 1995FairSatisfactoryGoodGood150087.9
July 1993FairSatisfactoryGoodGood150087.9
April 1991GoodVery GoodGoodGood150087.9

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
Steel Girder/Beamlinear ft.1,62401,62040
Steel Protective Coatingsq. ft.22,814005,70417,110
Reinforced Concrete Decksq. ft.7,7145,4001,1571,1570
Reinforced Concrete Columneach95310
Reinforced Concrete Abutmentlinear ft.190189010
Reinforced Concrete Pier Caplinear ft.1103956150
Pourable Jointlinear ft.9898000
Other Jointlinear ft.9897001
Movable Bearingeach2401860
Fixed Bearingeach2402400
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.41220802040