+45.34805, -83.73892
45°20'53" N, 83°44'20" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:US-23 over SWAN RIVER
Structure number:000000000008963
Old structure number:71171072000B010 (from 1992 edition)
Location:1.8 MI NW OF M-65
Purpose:Carries highway over waterway
Route classification:Principal Arterial - Other (Rural) [02]
Length of largest span:44.9 ft. [13.7 m]
Total length:44.9 ft. [13.7 m]
Roadway width between curbs:44.0 ft. [13.4 m]
Deck width edge-to-edge:46.9 ft. [14.3 m]
Owner:State Highway Agency [01]
Year built:1939
Year reconstructed:1993
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:MS 18 / HS 20 [5]
Main span material:Prestressed concrete [5]
Main span design:Stringer/Multi-beam or girder [02]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Monolithic Concrete (concurrently placed with structural deck) [1]

Latest Available Inspection: May 2017

Good/Fair/Poor Condition:Good
Status:Open, no restriction [A]
Average daily traffic:2,564 [as of 2007]
Truck traffic:14% of total traffic
Deck condition:Good [7 out of 9]
Superstructure condition:Very Good [8 out of 9]
Substructure condition:Good [7 out of 9]
Structural appraisal:Better than present minimum criteria [7]
Deck geometry appraisal:Better than present minimum criteria [7]
Water adequacy appraisal:Better than present minimum criteria [7]
Roadway alignment appraisal:Equal to present minimum criteria [6]
Channel protection:Bank protection is being eroded. River control devices and/or embankment have major damage. Trees and rush restrict the channel. [5]
Scour condition:Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Sufficiency rating:96.3

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
May 2017GoodGoodVery GoodGood256496.3
August 2015GoodGoodVery GoodGood256496.3
August 2013GoodGoodVery GoodGood256496.3
June 2011GoodVery GoodVery GoodGood256496.3
June 2009GoodVery GoodVery GoodGood256496.3
June 2007GoodVery GoodVery GoodGood247096.4
June 2005GoodVery GoodVery GoodGood300095.6
June 2003GoodVery GoodVery GoodVery Good300095.5
August 2001GoodVery GoodVery GoodVery Good300095.5
September 1999GoodVery GoodVery GoodVery Good300095.5
September 1997GoodVery GoodVery GoodVery Good300093.5
September 1995GoodVery GoodExcellentVery Good310093.3
June 1993GoodExcellentExcellentExcellent310093.3
October 1992FairVery GoodVery GoodSatisfactory310093.3
April 1991PoorPoorPoorSatisfactory310053.9

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
Prestressed Concrete Girder/Beamlinear ft.308308000
Reinforced Concrete Decksq. ft.2,0681,783197880
Reinforced Concrete Abutmentlinear ft.242241100
Pourable Jointlinear ft.8888000
Elastomeric Bearingeach1414000
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.88044440