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OLD M-107 over BIG IRON RIVER

Ontonagon County, Michigan

Map

Coordinates:
+46.83026, -89.56981
46°49'49" N, 89°34'11" W

Facts

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

Name:	OLD M-107 over BIG IRON RIVER
Structure number:	000000000008510
Old structure number:	66266061000B030 `(from 1992 edition)`
Location:	@ M-64
Purpose:	Carries highway over waterway
Route classification:	Major Collector (Rural) `[07]`
Length of largest span:	69.9 ft. `[21.3 m]`
Total length:	140.1 ft. `[42.7 m]`
Roadway width between curbs:	33.1 ft. `[10.1 m]`
Deck width edge-to-edge:	38.4 ft. `[11.7 m]`
Owner:	County Highway Agency `[02]`
Year built:	1938
Historic significance:	Bridge is not eligible for the National Register of Historic Places `[5]`
Design load:	M 18 / H 20 `[4]`
Number of main spans:	2
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:	Poor
Status:	Open, no restriction `[A]`
Average daily traffic:	831 `[as of 2007]`
Truck traffic:	5% of total traffic
Deck condition:	Poor `[4 out of 9]`
Superstructure condition:	Poor `[4 out of 9]`
Substructure condition:	Satisfactory `[6 out of 9]`
Structural appraisal:	Meets minimum tolerable limits to be left in place as is `[4]`
Deck geometry appraisal:	Equal to present minimum criteria `[6]`
Water adequacy appraisal:	Better than present minimum criteria `[7]`
Roadway alignment appraisal:	Equal to present minimum criteria `[6]`
Channel protection:	Bank protection is in need of minor repairs. River control devices and embankment protection have a little minor damage. Banks and/or channel have minor amounts of drift. `[7]`
Scour condition:	Bridge foundations determined to be stable for the assessed or calculated scour condition. `[8]`
Sufficiency rating:	55.3

Previous Inspections

Date	Condition	Deck	Superstructure	Substructure	ADT	Suff. Rating
October 2018	Poor	Poor	Poor	Satisfactory	831	55.3
October 2017	Poor	Fair	Poor	Satisfactory	831	57.6
October 2016	Poor	Fair	Poor	Satisfactory	831	57.6
November 2015	Poor	Fair	Poor	Satisfactory	831	57.6
November 2013	Poor	Fair	Poor	Fair	831	50.6
November 2011	Poor	Fair	Poor	Fair	831	50.6
November 2009	Poor	Fair	Poor	Fair	831	50.7
August 2006	Poor	Fair	Poor	Fair	831	50.7

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