Sieur de Monts Spring Bridge, Spanning Park Loop Road at Route 3 near Sieur de Monts Spring, Bar Harbor, Hancock County, ME
Significance: The Sieur de Monts Spring Bridge provided a separated grade crossing between the Bar Harbor-Seal Harbor highway and the Park Loop Road. Boggy soil conditions at the site forced the contractor to employ a reinforced concrete "raft" to support the footings, so in effect the bridge "floats" on its foundations.
Unprocessed Field note material exists for this structure: N328
Survey number: HAER ME-14
Building/structure dates: 1940 Initial Construction