I-75 SB over CO RD 4914 & MBT RR(ABN)


+45.87728, -84.73931
45°52'38" N, 84°44'22" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:I-75 SB over CO RD 4914 & MBT RR(ABN)
Structure number:000000000005948
Old structure number:49149025000R012 (from 1992 edition)
Location:IN ST IGNACE (CO RD 4914)
Purpose:Carries highway over highway
Route classification:Principal Arterial - Interstate (Rural) [01]
Length of largest span:71.9 ft. [21.9 m]
Total length:277.9 ft. [84.7 m]
Roadway width between curbs:33.8 ft. [10.3 m]
Deck width edge-to-edge:34.8 ft. [10.6 m]
Vertical clearance below bridge:26.2 ft. [8.0 m]
Skew angle:38°
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]
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: July 2018

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:2,555 [as of 2007]
Truck traffic:8% of total traffic
Deck condition:Satisfactory [6 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:Meets minimum tolerable limits to be left in place as is [4]
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:83.7
Recommended work:Bridge deck replacement with only incidental widening. [37]

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
July 2018FairSatisfactoryGoodFair255583.7
July 2016FairSatisfactoryGoodFair255583.7
July 2014FairSatisfactorySatisfactoryFair255583.7
July 2012FairFairSatisfactoryFair255582.7
July 2010FairSatisfactoryGoodSatisfactory255594.8
July 2008FairSatisfactoryGoodGood255594.8
July 2006FairSatisfactoryGoodGood374894.6
July 2004FairSatisfactoryGoodGood340094.7
July 2002GoodGoodGoodGood340093.7
July 2000GoodGoodVery GoodGood340094.7
October 1998GoodGoodVery GoodGood340094.7
December 1996FairGoodVery GoodSatisfactory340094.7
October 1994FairGoodVery GoodSatisfactory320094.8
September 1992GoodGoodVery GoodGood320094.8
October 1990FairGoodFairSatisfactory320083.7

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
Steel Girder/Beamlinear ft.1,9461,9262000
Steel Protective Coatingsq. ft.15,50014,6006003000
Reinforced Concrete Decksq. ft.9,7309,595100350
Wearing Surfacessq. ft.9,7309,464502160
Concrete Protective Coatingsq. ft.9,73006,6153,1150
Reinforced Concrete Columneach124620
Reinforced Concrete Pier Walllinear ft.5151000
Reinforced Concrete Abutmentlinear ft.174169500
Reinforced Concrete Pier Caplinear ft.135596880
Strip Seal Jointlinear ft.1351251000
Movable Bearingeach2825300
Fixed Bearingeach2825300
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.55652620100