Sarnia Bridge Co.
of Sarnia, Ontario, Canada
Big Salt River Bridge
(Midland County, Michigan)Built 1920Lost pony truss bridge over Big Salt River on North Saginaw Road in SanfordRelocated to Perrine Road in 2001
Blue Water Bridge
(St. Clair County, Michigan)Built 1938Through truss bridge over St. Clair River on Westbound I-94 in Port HuronOpen to traffic
Perrine Road Bridge
(Midland County, Michigan)Built 1920Parker pony truss bridge over Sturgeon Ck on Perrine RdOpen to traffic, 62 ton weight limit