4 MI RD over I-75


+44.59846, -84.70898
44°35'54" N, 84°42'32" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:4 MI RD over I-75
Structure number:000000000002034
Old structure number:20120014000S020 (from 1992 edition)
Location:4.0 MI S OF GRAYLING
Purpose:Carries highway over highway
Route classification:Major Collector (Rural) [07]
Length of largest span:71.9 ft. [21.9 m]
Total length:212.0 ft. [64.6 m]
Roadway width between curbs:26.9 ft. [8.2 m]
Deck width edge-to-edge:30.8 ft. [9.4 m]
Vertical clearance below bridge:13.1 ft. [4.0 m]
Owner:State Highway Agency [01]
Year built:1961
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:4
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: March 2018

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:180 [as of 1974]
Deck condition:Fair [5 out of 9]
Superstructure condition:Good [7 out of 9]
Substructure condition:Satisfactory [6 out of 9]
Structural appraisal:Equal to present minimum criteria [6]
Deck geometry appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Underclearances appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Roadway alignment appraisal:Equal to present minimum criteria [6]
Scour condition:Bridge not over waterway. [N]
Sufficiency rating:91.9

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
March 2018FairFairGoodSatisfactory18091.9
March 2016FairFairGoodSatisfactory18091.9
April 2014FairSatisfactoryGoodSatisfactory18092.9
April 2012FairSatisfactoryGoodSatisfactory18092.9
February 2011FairSatisfactoryGoodSatisfactory18092.9
February 2009FairSatisfactoryGoodSatisfactory18092.9
February 2007FairSatisfactoryGoodSatisfactory18092.9
February 2005FairSatisfactoryGoodFair18082.8
February 2003FairSatisfactoryGoodFair18081.8
February 2001FairSatisfactoryGoodSatisfactory18092.9
August 1999FairSatisfactoryGoodSatisfactory18094.9
August 1997FairFairGoodSatisfactory18088.8
September 1995FairSatisfactoryGoodSatisfactory18089.8
June 1993FairSatisfactoryGoodSatisfactory18089.8
April 1991FairSatisfactoryGoodSatisfactory18089.8

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
Steel Girder/Beamlinear ft.1,27284043200
Steel Protective Coatingsq. ft.10,58810,588000
Reinforced Concrete Decksq. ft.6,5724,3822,19000
Reinforced Concrete Columneach96300
Concrete Protective Coatingsq. ft.829829000
Reinforced Concrete Abutmentlinear ft.114108060
Concrete Protective Coatingsq. ft.285285000
Reinforced Concrete Pier Caplinear ft.96663000
Concrete Protective Coatingsq. ft.52,80052,800000
Strip Seal Jointlinear ft.7878000
Pourable Jointlinear ft.5252000
Movable Bearingeach2402400
Fixed Bearingeach2491500
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.42432110300
Concrete Protective Coatingsq. ft.2,5442,544000