Sly Brook Rd over Sly Brook
Aroostook County, Maine · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Sly Brook Rd over Sly Brook in Aroostook County, Maine, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 7 (good condition) on the 0-9 scale.
- It was built in 2004, making it 21 years old at the 2025 inventory.
- It carries about 700 vehicles a day (traffic count year 2016).
- Its listed owner is the state highway agency.
- It is one of 42 of the 231 inventoried bridges in Aroostook County rated good (18.2%); 27 (11.7%) 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.
View this bridge on a map → (47.14038, -68.55586)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Culvert | 7 | Good condition |
Bridge details
| Structure | Aluminum or iron culvert |
| Length | about 28 ft |
| Location | 0.7 Mi SE of Wallagrass |
| NBI structure number | 0141 |
| Condition class | Good |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Maine department of transportation.
Busiest bridges in Aroostook County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| North St over Meduxnekeag River | 1944 | 13,721 | Poor |
| Main St over Aroostook River | 1982 | 11,336 | Fair |
| State St over Presque Isle Stream | 1979 | 8,853 | Fair |
| E Main St over Fish River | 1953 | 8,100 | Fair |
| Connector Rd over Presque Isle Stream | 1978 | 7,860 | Fair |
| Main St over Caribou Stream | 1922 | 7,670 | Fair |
All bridges nearby: Aroostook County, ME bridge conditions · every bridge in Aroostook County · Maine bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.