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M-72 & M-93 over AU SABLE RIVER

Crawford County, Michigan

Map

Coordinates:
+44.65802, -84.72608
44°39'29" N, 84°43'34" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.

Name:	M-72 & M-93 over AU SABLE RIVER
Structure number:	000000000002053
Old structure number:	20120021000B020 `(from 1992 edition)`
Location:	IN GRAYLING
Purpose:	Carries highway and pedestrian walkway over waterway
Route classification:	Principal Arterial - Other (Rural) `[02]`
Length of largest span:	54.8 ft. `[16.7 m]`
Total length:	54.8 ft. `[16.7 m]`
Roadway width between curbs:	54.1 ft. `[16.5 m]`
Deck width edge-to-edge:	55.1 ft. `[16.8 m]`
Skew angle:	45°
Owner:	State Highway Agency `[01]`
Year built:	1993
Historic significance:	Bridge is not eligible for the National Register of Historic Places `[5]`
Design load:	MS 22.5 / HS 25 `[9]`
Main span material:	Prestressed concrete `[5]`
Main span design:	Box beam or girders - Multiple `[05]`
Deck type:	Concrete Cast-in-Place `[1]`
Wearing surface:	Monolithic Concrete (concurrently placed with structural deck) `[1]`

Latest Available Inspection: June 2017

Good/Fair/Poor Condition:	Good
Status:	Open, no restriction `[A]`
Average daily traffic:	11,731 `[as of 2007]`
Truck traffic:	12% of total traffic
Deck condition:	Good `[7 out of 9]`
Superstructure condition:	Good `[7 out of 9]`
Substructure condition:	Very Good `[8 out of 9]`
Structural appraisal:	Better than present minimum criteria `[7]`
Deck geometry appraisal:	Meets minimum tolerable limits to be left in place as is `[4]`
Water adequacy appraisal:	Basically intolerable requiring high priority of corrrective action `[3]`
Roadway alignment appraisal:	Better than present minimum criteria `[7]`
Channel protection:	Banks are protected or well vegetated. River control devices such as spur dikes and embankment protection are not required or are in a stable condition. `[8]`
Scour condition:	Bridge foundations determined to be stable for the assessed or calculated scour condition. `[8]`
Sufficiency rating:	68.8
Recommended work:	Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. `[31]`

Previous Inspections

Date	Condition	Deck	Superstructure	Substructure	ADT	Suff. Rating
June 2017	Good	Good	Good	Very Good	11731	68.8
September 2015	Good	Good	Good	Very Good	11731	68.8
September 2013	Good	Good	Good	Very Good	11731	68.8
June 2011	Good	Very Good	Good	Very Good	11731	68.8
June 2009	Good	Very Good	Good	Very Good	11731	68.8
June 2007	Good	Very Good	Good	Very Good	9015	71.1
June 2005	Good	Very Good	Very Good	Very Good	9600	70.6
June 2003	Good	Very Good	Very Good	Very Good	9600	69.4
August 2001	Good	Very Good	Very Good	Very Good	9600	69.4
August 1999	Good	Very Good	Very Good	Very Good	9600	69.4
August 1997	Good	Very Good	Excellent	Very Good	9600	67.4
August 1995	Good	Excellent	Very Good	Very Good	17100	81.0
September 1993	Good	Excellent	Very Good	Excellent	17100	81.0
October 1992	Poor	Serious	Poor	Fair	17100	41.4
November 1991	Poor	Poor	Poor	Fair	17100	43.4

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.

Element	Units	Quantity	1-Good	2-Fair	3-Poor	4-Serious
Superstructure
Prestressed Concrete Closed Web/Box Girder	linear ft.	1,155	1,155	0	0	0
Deck
Reinforced Concrete Deck	sq. ft.	3,795	3,190	0	605	0
Wearing Surfaces	sq. ft.	3,080	2,475	0	605	0
Substructure
Reinforced Concrete Abutment	linear ft.	266	266	0	0	0
Joints
Pourable Joint	linear ft.	158	62	79	17	0
Bearings
Elastomeric Bearing	each	42	42	0	0	0
Bridge Rail
Steel or Aluminum Bridge Rail	linear ft.	55	55	0	0	0
Reinforced Concrete Bridge Rail	linear ft.	110	110	0	0	0

© Copyright 2012-20, James Baughn
Disclaimer: All data is taken from the National Bridge Inventory and has not been verified.
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