M.M. Caldwell
Meridian Street Bridge (Pierce County, Washington)Consulting engineer, 1925
Through truss bridge over Puyallup River on WA 167 in Puyallup
Open to traffic with weight restrictions
Pasco - Kennewick Bridge (Benton County, Washington)Built 1922
Lost Cantilever through truss bridge over Columbia River on WA-397
Replaced by new bridge
Wishkah River Bridge (Grays Harbor County, Washington)Consulting Engineer, 1925
Bascule bridge over Wishkah River on US 12 in Aberdeen
Open to traffic
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