Main ST over Sebasticook River
PoorSomerset County, Maine · 300 E of JCT RTE 152 · Structure no. 3179
- Built
- 1935
- 90 years old, rebuilt 1991
- Condition
- Poor
- inspected July 2023
- Type
- Tee Beam
- Concrete
- Length
- 70 ft
- 1 main span
- Daily traffic
- 3,860
- 2016 count
- Owner
- State
- State Highway Agency
About this bridge
Main ST over Sebasticook River is a concrete tee beam carrying Main ST over Sebasticook River in Somerset County, Maine. It was built in 1935 and reconstructed in 1991, so it is 90 years old, older than the Maine average of 53.7 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 3,860 vehicles a day, roughly 5% of them trucks, projected to reach 5,404 by 2036. The structure is 70 ft (21.2 m) long and 36 ft wide. If it were closed, the detour would be 26.7 mi (43 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Main ST over Sebasticook River built?
It was built in 1935, making it 90 years old in 2025. It was reconstructed in 1991.
What condition is Main ST over Sebasticook River in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in July 2023.
How much traffic does Main ST over Sebasticook River carry?
About 3,860 vehicles per day (2016 count), of which roughly 5% are trucks.
How long is Main ST over Sebasticook River?
The structure is 70 ft (21.2 m) long with a longest span of 44 ft (13.3 m) and a deck 36 ft wide.
Who owns Main ST over Sebasticook River?
It is owned by the State Highway Agency.