River Road South over Partridge Brook
Cheshire County, New Hampshire · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- River Road South over Partridge Brook in Cheshire County, New Hampshire, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 3 (serious condition) on the 0-9 scale.
- It was built in 1937, making it 88 years old at the 2025 inventory.
- It carries about 1,167 vehicles a day (traffic count year 2023).
- Its listed owner is a city or municipal highway agency.
- It is one of 22 of the 194 inventoried bridges in Cheshire County rated poor (11.3%); 22 (11.3%) are rated poor.
- Its traffic status in the 2025 inventory is open, would be posted or closed except for temporary shoring or other temporary measures (NBI item 41).
- Its class is unchanged from 2024 (poor), but component ratings moved: substructure 4 to 3.
- Its most recent inspection on record is dated October 2024, on a 16-month routine inspection cycle.
- A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.
View this bridge on a map → (42.97445, -72.46452)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 4 | 4 | Poor condition |
| Superstructure | 4 | 4 | Poor condition |
| Substructure | 4 | 3 | Serious condition |
Bridge details
| Structure | Timber slab |
| Length | about 147 ft |
| Location | 0.72 Mi NH63 |
| NBI structure number | 027200890010000 |
| Condition class | Poor |
| Traffic status (item 41) | Open, would be posted or closed except for temporary shoring or other temporary measures |
| Last inspection (item 90) | October 2024 |
| Inspection interval (item 91) | 16 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.