Bolsters Mills RD over College Swamp
PoorOxford County, Maine · .5 MI N JCT 121 · Structure no. 3475
- Built
- 1937
- 88 years old, rebuilt 2007
- Condition
- Poor
- inspected July 2024
- Type
- Slab
- Concrete
- Length
- 23 ft
- 1 main span
- Daily traffic
- 712
- 2016 count
- Owner
- State
- State Highway Agency
About this bridge
Bolsters Mills RD over College Swamp is a concrete slab carrying Bolsters Mills RD over College Swamp in Oxford County, Maine. It was built in 1937 and reconstructed in 2007, so it is 88 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 712 vehicles a day, roughly 5% of them trucks, projected to reach 1,139 by 2036. The structure is 23 ft (7 m) long and 25 ft wide. If it were closed, the detour would be 19.9 mi (32 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 | 4 Poor | Advanced section loss, deterioration, 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Bolsters Mills RD over College Swamp built?
It was built in 1937, making it 88 years old in 2025. It was reconstructed in 2007.
What condition is Bolsters Mills RD over College Swamp 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 2024.
How much traffic does Bolsters Mills RD over College Swamp carry?
About 712 vehicles per day (2016 count), of which roughly 5% are trucks.
How long is Bolsters Mills RD over College Swamp?
The structure is 23 ft (7 m) long with a longest span of 20 ft (6.1 m) and a deck 25 ft wide.
Who owns Bolsters Mills RD over College Swamp?
It is owned by the State Highway Agency.