Bridge Street-Grand River Bridge (1910)

Bridge Street has, actually, been a trunkline route since the implementation of the system (whose centennial was actually just last year). Up until 1925, it was part of the original M-16 (which was never re-used after being supplanted with U.S. 16). It then hung in limbo for a couple of years until definitely being signed as its current M-100 by 1927.

http://www.michiganhighways.org/listings/HistoricUS-016pg2.h...

http://www.michiganhighways.org/listings/M-100.html

There also used to be a two-span riveted Warren pony truss leading to the nearby island northwest of the highway bridge. This bridge was removed and replaced. The trusses are in storage, but sadly are in bad condition and given other more significant bridges available for reuse, unlikely to be reused in the future. The bridge was removed before I began photographing bridges, so I don't have any photos of it standing.

An uncovered wooden truss

https://books.google.com/books?id=_ZdwgchAUnoC&pg=PA188&dq=G...

What was there before this one?

This bridge has been gone for many years, with a slab of concrete in its place.