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N Stonington Rd over Mill Pond Outlet

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

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

N Stonington Rd over Mill Pond Outlet in Hancock County, Maine, is rated in good condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the substructure, rated 7 (good condition) on the 0-9 scale.
It was built in 2023, making it 2 years old at the 2025 inventory.
It carries about 2,644 vehicles a day (traffic count year 2016).
Its listed owner is the state highway agency.
It is one of 16 of the 69 inventoried bridges in Hancock County rated good (23.2%); 17 (24.6%) 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	Prestressed concrete tee beam
Length	about 45 ft
Location	Deerisle-stonington T.l.
NBI structure number	3063
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
Main St over Union River	1923	16,449	Poor
Bangor Rd over Union River	1981	15,759	Fair
Bar Harbor Rd over Mt Desert Narrows	1958	15,122	Fair
Route 1 over Kilkenny St	2000	12,782	Good
Maine Route 233 over Hulls Cove Road	1928	12,768	Fair
Main Rd over M C RR	1973	10,891	Fair