Share:

I-75 NB over AU SABLE RIVER

Crawford County, Michigan

Map

Coordinates:
+44.66637, -84.69648
44°39'59" N, 84°41'47" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:I-75 NB over AU SABLE RIVER
Structure number:000000000002039
Old structure number:20120015000B020 (from 1992 edition)
Location:0.7 MI N OF M-72
Purpose:Carries highway over waterway
Route classification:Principal Arterial - Interstate (Rural) [01]
Length of largest span:65.0 ft. [19.8 m]
Total length:65.0 ft. [19.8 m]
Roadway width between curbs:42.0 ft. [12.8 m]
Deck width edge-to-edge:46.9 ft. [14.3 m]
Owner:State Highway Agency [01]
Year built:1960
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:MS 18+Mod / HS 20+Mod [6]
Main span material:Steel [3]
Main span design:Stringer/Multi-beam or girder [02]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Epoxy Overlay [5]

Latest Available Inspection: May 2018

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:5,877 [as of 2007]
Truck traffic:12% of total traffic
Deck condition:Satisfactory [6 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:Equal to present desirable criteria [8]
Water adequacy appraisal:Equal to present desirable criteria [8]
Roadway alignment appraisal:Equal to present minimum criteria [6]
Channel protection:Banks are protected or well vegetated. River control devices such as spur dikes and embankment protection are not required or are in a stable condition. [8]
Scour condition:Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Sufficiency rating:92.4

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
May 2018FairSatisfactoryGoodSatisfactory587792.4
May 2016FairSatisfactoryGoodSatisfactory587792.4
May 2014FairSatisfactoryVery GoodSatisfactory587792.4
June 2012FairGoodVery GoodSatisfactory587792.4
June 2010FairGoodVery GoodSatisfactory587792.4
December 2009FairGoodVery GoodSatisfactory587792.4
June 2008FairGoodVery GoodSatisfactory587792.4
June 2006FairSatisfactoryVery GoodSatisfactory755592.3
June 2004FairSatisfactoryVery GoodSatisfactory285092.7
December 2002FairSatisfactoryVery GoodSatisfactory285092.7
December 2000FairSatisfactoryVery GoodSatisfactory285092.7
August 1999FairSatisfactoryVery GoodSatisfactory285097.7
August 1997FairSatisfactoryVery GoodSatisfactory285092.7
August 1995FairSatisfactoryVery GoodSatisfactory470092.6
June 1993FairFairVery GoodSatisfactory470091.6
April 1991FairGoodVery GoodSatisfactory470092.6

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
ElementUnitsQuantity1-Good2-Fair3-Poor4-Serious
Superstructure
Steel Girder/Beamlinear ft.6105684200
Steel Protective Coatingsq. ft.5,0845,0424200
Deck
Reinforced Concrete Decksq. ft.3,0082,635314572
Wearing Surfacessq. ft.2,6882,38600302
Substructure
Reinforced Concrete Abutmentlinear ft.222211380
Joints
Pourable Jointlinear ft.845010240
Bearings
Movable Bearingeach1001000
Fixed Bearingeach1001000
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.1281101800