Five Islands Rd over Back River
Sagadahoc County, Maine · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Five Islands Rd over Back River in Sagadahoc County, Maine, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 8 (very good condition) on the 0-9 scale.
- It was built in 2009, making it 16 years old at the 2025 inventory.
- It carries about 2,330 vehicles a day (traffic count year 2016).
- Its listed owner is the state highway agency.
- It is one of 18 of the 64 inventoried bridges in Sagadahoc County rated good (28.1%); 6 (9.4%) 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 July 2023, 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 → (43.85165, -69.77182)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 8 | 8 | Very good condition |
| Superstructure | 8 | 8 | Very good condition |
| Substructure | 8 | 8 | Very good condition |
Bridge details
| Structure | Continuous steel stringer or multi-beam girder |
| Length | about 407 ft |
| Location | at Town Line |
| NBI structure number | 3016 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | July 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 Maine department of transportation.
Busiest bridges in Sagadahoc County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Leeman Hwy over Kennebec River | 2000 | 23,982 | Good |
| Bypass Dr over Route 24 Middlesex Rd | 1997 | 22,360 | Good |
| Main St over M C RR & A Marsh | 2024 | 18,940 | Good |
| Route 196 over M.d.o.t. Railroad | 1996 | 18,815 | Fair |
| US 1 SB over Maine Central RR | 1966 | 17,833 | Fair |
| Route 1 over Neguasset Lake Outlet | 1957 | 17,780 | Fair |
All bridges nearby: Sagadahoc County, ME bridge conditions · every bridge in Sagadahoc County · Maine bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.