NH115A over Cherry Mill Brook
Coos County, New Hampshire · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- NH115A over Cherry Mill Brook in Coos County, New Hampshire, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
- It was built in 1936 and reconstructed in 2015, making it 89 years old at the 2025 inventory.
- It carries about 519 vehicles a day (traffic count year 2023).
- Its listed owner is the state highway agency.
- It is one of 93 of the 189 inventoried bridges in Coos County rated good (49.2%); 10 (5.3%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its class is unchanged from 2024 (good), but component ratings moved: deck 8 to 7, superstructure 8 to 7, substructure 8 to 7.
- Its most recent inspection on record is dated March 2024, on a 24-month routine inspection cycle.
- 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.
View this bridge on a map → (44.38536, -71.48006)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 8 | 7 | Good condition |
| Superstructure | 8 | 7 | Good condition |
| Substructure | 8 | 7 | Good condition |
Bridge details
| Structure | Concrete slab |
| Length | about 27 ft |
| Location | 3.6 Mi From Jct Rte 2 |
| NBI structure number | 013500890009000 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | March 2024 |
| 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 Coos County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 2 Nh 16 over Moose River | 1939 | 10,406 | Good |
| Nh 16 over Moose Brook | 1972 | 10,237 | Fair |
| US 3 NH116 NH142 over Johns River | 1938 | 9,718 | Fair |
| US 2 US 3 over Israel River | 1990 | 9,175 | Good |
| US 3 over Upper Ammonoosuc River | 1995 | 5,412 | Good |
| US 2 over Recreational Trail | 1960 | 5,195 | Good |
All bridges nearby: Coos County, NH bridge conditions · every bridge in Coos County · New Hampshire bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.