Main ST over Kennebec R
FairSomerset County, Maine · Madison Anson Tl · Structure no. 2491
- Built
- 1974
- 51 years old
- Condition
- Fair
- inspected November 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 469 ft
- 3 main spans
- Daily traffic
- 7,854
- 2016 count
- Owner
- State
- State Highway Agency
About this bridge
Main ST over Kennebec R is a steel continuous stringer/multi-beam or girder carrying Main ST over Kennebec R in Somerset County, Maine. It was built in 1974, so it is 51 years old, younger than the Maine average of 53.7 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 7,854 vehicles a day, roughly 5% of them trucks, projected to reach 10,996 by 2036. The structure is 469 ft (142.8 m) long and 44 ft wide. If it were closed, the detour would be 41 mi (66 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Main ST over Kennebec R built?
It was built in 1974, making it 51 years old in 2025.
What condition is Main ST over Kennebec R in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in November 2024.
How much traffic does Main ST over Kennebec R carry?
About 7,854 vehicles per day (2016 count), of which roughly 5% are trucks.
How long is Main ST over Kennebec R?
The structure is 469 ft (142.8 m) long with a longest span of 170 ft (51.8 m) and a deck 44 ft wide.
Who owns Main ST over Kennebec R?
It is owned by the State Highway Agency.