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Dufour Road over S Branch Baker River

Grafton County, New Hampshire · rated Good in the 2025 National Bridge Inventory

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

Dufour Road over S Branch Baker River in Grafton County, New Hampshire, is rated in good condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
It was built in 1981 and reconstructed in 2014, making it 44 years old at the 2025 inventory.
It carries about 96 vehicles a day (traffic count year 2023).
Its listed owner is a city or municipal highway agency.
It is one of 262 of the 547 inventoried bridges in Grafton County rated good (47.9%); 43 (7.9%) 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 multiple box beam
Length	about 63 ft
Location	0.19MI NH25
NBI structure number	026901620007200
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
I-89 NB over Plaza Connector Road	2012	28,690	Fair
I-89 Nh 10 over Brook Atv Trail	1959	25,062	Fair
I-89 Nh 10 NB over Truck Road Mascoma River	1966	23,084	Fair
I-89 NB over US 4 Nh 10	1966	22,727	Good
I-89 NB over Connecticut River Necrr	1966	22,288	Poor
I-89 Nh 10 SB over US 4	1966	21,937	Good