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


+45.87716, -84.73889
45°52'38" N, 84°44'20" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:I-75 NB over CO RD 4914 & MBT RR(ABN)
Structure number:000000000005947
Old structure number:49149025000R011 (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:Better than present minimum criteria [7]
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 2014FairSatisfactoryGoodSatisfactory255594.8
July 2012FairSatisfactoryGoodSatisfactory255594.8
July 2010FairGoodGoodSatisfactory255594.8
July 2008FairGoodGoodSatisfactory255594.8
July 2006FairGoodGoodSatisfactory374894.6
July 2004FairGoodGoodSatisfactory340094.7
July 2002FairGoodGoodSatisfactory340093.7
July 2000GoodGoodGoodGood340094.7
October 1998GoodGoodVery GoodGood340094.7
August 1996FairGoodVery GoodSatisfactory340094.7
October 1994FairGoodVery GoodSatisfactory320094.8
September 1992FairGoodVery GoodSatisfactory320094.8
October 1990FairGoodFairSatisfactory320083.7

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
Steel Girder/Beamlinear ft.1,9461,8866000
Steel Protective Coatingsq. ft.15,50014,4001,0001000
Reinforced Concrete Decksq. ft.9,7309,220500100
Wearing Surfacessq. ft.9,7309,220500100
Reinforced Concrete Columneach122820
Reinforced Concrete Pier Walllinear ft.5151000
Reinforced Concrete Abutmentlinear ft.1601461220
Reinforced Concrete Pier Caplinear ft.1355560200
Strip Seal Jointlinear ft.135134010
Movable Bearingeach2802800
Fixed Bearingeach2802800
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.55643212040