Nh 12 over Mill Pond
Cheshire County, New Hampshire · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Nh 12 over Mill Pond in Cheshire County, New Hampshire, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the superstructure, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1928 and reconstructed in 1968, making it 97 years old at the 2025 inventory.
- It carries about 8,066 vehicles a day (traffic count year 2023).
- Its listed owner is the state highway agency.
- It is one of 90 of the 194 inventoried bridges in Cheshire County rated fair (46.4%); 22 (11.3%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated June 2023, on a 24-month routine inspection cycle.
- 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.
View this bridge on a map → (42.82483, -72.18229)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 5 | 5 | Fair condition |
| Substructure | 6 | 6 | Satisfactory condition |
Bridge details
| Structure | Masonry deck arch |
| Length | about 56 ft |
| Location | 1.37 Mi. Fitzwilliam Tl |
| NBI structure number | 025800980008600 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | June 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 8: foundations stable, scour above the top of the footing |
Source: FHWA National Bridge Inventory, 2025 data as reported by the New Hampshire department of transportation.
Busiest bridges in Cheshire County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Nh 12 NH101 over Ashuelot River Ped Trail | 1961 | 22,780 | Fair |
| Nh 9 over Ash Swamp Brook | 2006 | 22,417 | Good |
| Nh 12 over Beaver Brook | 2019 | 17,831 | Good |
| Nh 12 over Branch River | 1994 | 17,831 | Good |
| West Street over Ashuelot River | 1952 | 16,605 | Fair |
| Nh 9 Nh 10 Nh 12 over West Street | 1967 | 16,222 | Good |
All bridges nearby: Cheshire County, NH bridge conditions · every bridge in Cheshire County · New Hampshire bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.