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7 Mile Road Bridge

Map 

Street View 

Facts 

Overview
Girder bridge over Big Salt River on 7 Mile Road
Location
Midland County, Michigan
Status
Open to traffic
History
Built 1927
Design
Girder
Dimensions
Length of largest span: 89.9 ft.
Total length: 91.9 ft.
Deck width: 22.0 ft.
Also called
Old M-30 Bridge
Approximate latitude, longitude
+43.67398, -84.38921   (decimal degrees)
43°40'26" N, 84°23'21" W   (degrees°minutes'seconds")
Approximate UTM coordinates
16/710463/4838975 (zone/easting/northing)
Average daily traffic (as of 1999)
4,490
Inventory numbers
MINEW 06954 (Michigan bridge number on the National Bridge Inventory 2011 and later)
MINBI 56200060000B020 (Michigan bridge number on the National Bridge Inventory 2010 and before)
BH 84717 (Bridgehunter.com ID)
Inspection report (as of September 2015)
Overall condition: Fair
Superstructure condition rating: Fair (5 out of 9)
Substructure condition rating: Satisfactory (6 out of 9)
Deck condition rating: Fair (5 out of 9)
Sufficiency rating: 60.3 (out of 100)
View more at BridgeReports.com

Update Log 

  • March 23, 2019: New Street View added by Mike Kerkau

Sources 

Comments 

7 Mile Road Bridge
Posted March 23, 2019, by Mike Kerkau (mjkerkau [at] gmail [dot] com)

One of two former trunkline bridges very close together in this area.

This bridge used to serve M-30, from early 1927 up until the route was originally de-commissioned south of U.S. 10 in 1962.

The Michigan Highways link gives the details, but to piece them together:

In 1927, what had been a part of M-18 extending from Van Dyke Road in Gladwin County south to M-46 in Saginaw County was re-commissioned as M-30. Today, Meridian Road covers that whole trek all by itself, but that wasn't the case at this time.

Turns out that Meridian used to have two discontinuous segments, each north and south of the Tittabawassee River. South of the river, Meridian would turn into Wackerly Road, and going north from 46, M-30 would continue west along Wackerly, until hitting 7 Mile Road, at which point it then turned north, up to Saginaw Road. This bridge was a part of that. (M-30 would then turn ESE at Saginaw Road and follow what was then U.S. 10 until hitting the second segment of Meridian Road, then turning due north on Meridian and continuing from there.)

M-30, incidentally, was re-commissioned between the U.S. 10 freeway and M-20 back in 2009, shortly after a new bridge was built to connect the two segments of Meridian Road.