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Five Islands Rd over Back River

Sagadahoc County, Maine · rated Good in the 2025 National Bridge Inventory

United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled August 20, 2026

Five Islands Rd over Back River in Sagadahoc County, Maine, is rated in good condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 8 (very good condition) on the 0-9 scale.
It was built in 2009, making it 16 years old at the 2025 inventory.
It carries about 2,330 vehicles a day (traffic count year 2016).
Its listed owner is the state highway agency.
It is one of 18 of the 64 inventoried bridges in Sagadahoc County rated good (28.1%); 6 (9.4%) are rated poor.
A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.

Component ratings


Structure	Continuous steel stringer or multi-beam girder
Length	about 407 ft
Location	at Town Line
NBI structure number	3016
Condition class	Good

Source: FHWA National Bridge Inventory, 2025 data as reported by the Maine department of transportation.

Bridge	Built	Vehicles/day	Condition
Leeman Hwy over Kennebec River	2000	23,982	Good
Bypass Dr over Route 24 Middlesex Rd	1997	22,360	Good
Main St over M C RR & A Marsh	2024	18,940	Good
Route 196 over M.d.o.t. Railroad	1996	18,815	Fair
US 1 SB over Maine Central RR	1966	17,833	Fair
Route 1 over Neguasset Lake Outlet	1957	17,780	Fair