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I-75 NB over PORTAGE ST

Map

Coordinates:
+45.86668, -84.73454
45°52'00" N, 84°44'04" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:I-75 NB over PORTAGE ST
Structure number:000000000005950
Old structure number:49149025000S021 (from 1992 edition)
Location:IN ST IGNACE, PORTAGE ST
Purpose:Carries highway over highway
Route classification:Principal Arterial - Interstate (Rural) [01]
Length of largest span:56.8 ft. [17.3 m]
Total length:137.8 ft. [42.0 m]
Roadway width between curbs:42.0 ft. [12.8 m]
Deck width edge-to-edge:46.9 ft. [14.3 m]
Vertical clearance below bridge:13.1 ft. [4.0 m]
Skew angle:
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: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: October 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:Satisfactory [6 out of 9]
Structural appraisal:Equal to present minimum criteria [6]
Deck geometry appraisal:Equal to present desirable criteria [8]
Underclearances appraisal:Better than present minimum criteria [7]
Roadway alignment appraisal:Better than present minimum criteria [7]
Scour condition:Bridge not over waterway. [N]
Sufficiency rating:97.8

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
October 2018FairSatisfactoryGoodSatisfactory255597.8
October 2016FairSatisfactoryGoodSatisfactory255597.8
October 2014FairSatisfactoryGoodSatisfactory255597.8
October 2012FairSatisfactoryGoodSatisfactory255597.8
October 2010FairSatisfactoryGoodSatisfactory255597.8
October 2008FairSatisfactoryGoodSatisfactory255597.8
October 2006FairSatisfactoryGoodSatisfactory374897.7
October 2004FairSatisfactoryGoodSatisfactory340097.7
October 2002FairSatisfactoryGoodGood340097.7
October 2000FairSatisfactoryGoodGood340097.7
October 1998FairSatisfactoryGoodGood340097.7
September 1996GoodExcellentGoodGood340097.7
October 1994FairSatisfactoryGoodGood320097.8
September 1992FairSatisfactoryGoodGood320097.8
October 1990FairSatisfactoryGoodSatisfactory320097.8

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
ElementUnitsQuantity1-Good2-Fair3-Poor4-Serious
Superstructure
Steel Girder/Beamlinear ft.1,2421,1727000
Steel Protective Coatingsq. ft.8,7008,390300100
Deck
Reinforced Concrete Decksq. ft.6,5006,383100170
Wearing Surfacessq. ft.6,5006,42565100
Substructure
Reinforced Concrete Columneach88000
Reinforced Concrete Abutmentlinear ft.143141200
Reinforced Concrete Pier Caplinear ft.98801350
Joints
Strip Seal Jointlinear ft.9898000
Pourable Jointlinear ft.96066300
Bearings
Movable Bearingeach2727000
Fixed Bearingeach2727000
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.2762007600