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CO ROAD 451 over N BR THUNDER BAY RIVER

Montmorency County, Michigan

Map

Coordinates:
+45.19163, -83.89145
45°11'30" N, 83°53'29" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:CO ROAD 451 over N BR THUNDER BAY RIVER
Structure number:000000000007546
Old structure number:60200022000B010 (from 1992 edition)
Location:SEC 1 MONTMORENCY TWP E
Purpose:Carries highway over waterway
Route classification:Major Collector (Rural) [07]
Length of largest span:55.8 ft. [17.0 m]
Total length:57.7 ft. [17.6 m]
Roadway width between curbs:34.8 ft. [10.6 m]
Deck width edge-to-edge:37.4 ft. [11.4 m]
Owner:County Highway Agency [02]
Year built:1994
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:Box beam or girders - Multiple [05]
Deck type:Concrete Precast Panels [2]
Wearing surface:Monolithic Concrete (concurrently placed with structural deck) [1]

Latest Available Inspection: November 2018

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:750 [as of 2008]
Truck traffic:10% of total traffic
Deck condition:Good [7 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:Equal to present minimum criteria [6]
Water adequacy appraisal:Superior to present desirable criteria [9]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Channel protection:Bank and embankment protection is severely undermined. River control devices have severe damage. Large deposits of debris are in the channel. [4]
Scour condition:Bridge foundations determined to be stable for assessed or calculated scour condition. [5]
Sufficiency rating:83.0

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
November 2018FairGoodGoodFair75083.0
November 2016FairGoodGoodFair75083.0
November 2014FairGoodGoodSatisfactory75094.1
November 2012GoodGoodGoodGood75094.1
November 2010GoodGoodGoodGood75094.1
September 2008GoodGoodGoodGood75094.1
August 2006GoodGoodGoodGood75099.2
March 2004GoodVery GoodVery GoodVery Good75099.2
January 2002GoodVery GoodVery GoodVery Good75099.2
September 1999GoodVery GoodVery GoodVery Good75099.2
August 1997GoodVery GoodVery GoodVery Good75099.2
August 1995GoodExcellentVery GoodVery Good75099.2
May 1994GoodVery GoodVery GoodVery Good75096.2
November 1991GoodGoodGoodGood50058.2
May 1989GoodGoodGoodGood50069.0