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US-23 over BLACK MALLARD RIVER

Map

Coordinates:
+45.53666, -84.12938
45°32'12" N, 84°07'46" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:US-23 over BLACK MALLARD RIVER
Structure number:000000000008966
Old structure number:71171073000B030 (from 1992 edition)
Location:9.7 MI SE CHEBOYGAN COL
Purpose:Carries highway over waterway
Route classification:Principal Arterial - Other (Rural) [02]
Length of largest span:29.9 ft. [9.1 m]
Total length:29.9 ft. [9.1 m]
Roadway width between curbs:35.1 ft. [10.7 m]
Deck width edge-to-edge:40.0 ft. [12.2 m]
Owner:State Highway Agency [01]
Year built:1940
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:M 18 / H 20 [4]
Main span material:Concrete [1]
Main span design:Tee beam [04]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Bituminous [6]

Latest Available Inspection: May 2017

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:977 [as of 2007]
Truck traffic:6% of total traffic
Deck condition:Satisfactory [6 out of 9]
Superstructure condition:Satisfactory [6 out of 9]
Substructure condition:Good [7 out of 9]
Structural appraisal:Equal to present minimum criteria [6]
Deck geometry appraisal:Equal to present minimum criteria [6]
Water adequacy appraisal:Equal to present minimum criteria [6]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Channel protection:Bank is beginning to slump. River control devices and embankment protection have widespread minor damage. There is minor stream bed movement evident. Debris is restricting the channel slightly. [6]
Scour condition:Bridge foundations determined to be stable for assessed or calculated scour condition. [5]
Sufficiency rating:92.7

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
May 2017FairSatisfactorySatisfactoryGood97792.7
August 2015FairSatisfactorySatisfactoryGood97792.7
August 2013FairSatisfactorySatisfactoryGood97792.7
June 2011GoodGoodGoodGood97792.7
June 2009GoodGoodGoodGood97792.7
June 2007GoodGoodGoodGood215988.8
June 2005FairSatisfactoryGoodGood150091.5
June 2003FairSatisfactoryGoodGood150091.4
July 2001FairSatisfactoryGoodGood150091.4
September 1999FairSatisfactoryGoodGood150096.6
September 1997FairSatisfactoryGoodGood150089.4
July 1995GoodGoodGoodGood120090.1
July 1993FairSatisfactoryGoodGood120090.1
April 1991FairSatisfactoryGoodGood120090.1

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
ElementUnitsQuantity1-Good2-Fair3-Poor4-Serious
Superstructure
Reinforced Concrete Girder/Beamlinear ft.256250060
Deck
Reinforced Concrete Top Flangesq. ft.1,2801,280000
Wearing Surfacessq. ft.1,1201,120000
Substructure
Reinforced Concrete Abutmentlinear ft.194188600
Bridge Rail
Steel or Aluminum Bridge Raillinear ft.6464000