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Nh 31 over Ashuelot River

Sullivan County, New Hampshire · rated Fair in the 2025 National Bridge Inventory

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

Nh 31 over Ashuelot River in Sullivan County, New Hampshire, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the substructure, rated 6 (satisfactory condition) on the 0-9 scale.
It was built in 1935 and reconstructed in 1983, making it 90 years old at the 2025 inventory.
It carries about 494 vehicles a day (traffic count year 2023).
Its listed owner is the state highway agency.
It is one of 79 of the 158 inventoried bridges in Sullivan County rated fair (50.0%); 9 (5.7%) are rated poor.
A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.

Component ratings


Structure	Steel stringer or multi-beam girder
Length	about 33 ft
Location	1.85 Mi. S. Goshen Tl
NBI structure number	026500930015200
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
Nh 11 NH103 over Sugar River	1981	13,248	Fair
Nh 11 NH103 over Sugar River	1985	12,792	Good
I-89 Nh 10 SB over I-89 Ramp	1959	10,987	Fair
I-89 Nh 10 SB over Skinner Brook	1972	10,987	Fair
I-89 Nh 10 SB over Miller Pond Road	1972	10,987	Good
I-89 SB over Nh 10	1972	10,987	Fair