Penobscot River Bridge (Penobscot County, Maine)
Built 1946
Through truss bridge over Penobscot River on ME 155 in Howland
Open to traffic

Penobscot River Bridge (Penobscot County, Maine)
Built 1950
Through truss bridge over Penobscot River on Bridge Road in Chester
Open to traffic

Waldo-Hancock Bridge (Waldo County, Maine)
Built 1931; replaced by new bridge 2006-07
Suspension bridge over Penobscot River on US 1 in Prospect
Closed to all traffic