Twin Sisters RD over Moose River
PoorPosted for loadLewis County, New York · 5.4 MI NE Potters Corners · Structure no. 000000003339800
- Built
- 1920
- 105 years old, rebuilt 2005
- Condition
- Poor
- inspected August 2024
- Type
- Truss - Thru
- Steel
- Length
- 118 ft
- 1 main span
- Daily traffic
- 7
- 2018 count
- Owner
- County
- County Highway Agency
About this bridge
Twin Sisters RD over Moose River is a steel truss - thru carrying Twin Sisters RD over Moose River in Lewis County, New York. It was built in 1920 and reconstructed in 2005, so it is 105 years old, older than the New York average of 53 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. Its operating status is: posted for load restriction.
It carries about 7 vehicles a day, roughly 17% of them trucks, projected to reach 10 by 2038. The structure is 118 ft (36 m) long and 13 ft wide. If it were closed, the detour would be 123.7 mi (199 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Substructure | 4 Poor | Advanced section loss, deterioration, 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 Twin Sisters RD over Moose River built?
It was built in 1920, making it 105 years old in 2025. It was reconstructed in 2005.
What condition is Twin Sisters RD over Moose 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 August 2024.
How much traffic does Twin Sisters RD over Moose River carry?
About 7 vehicles per day (2018 count), of which roughly 17% are trucks.
How long is Twin Sisters RD over Moose River?
The structure is 118 ft (36 m) long with a longest span of 116 ft (35.4 m) and a deck 13 ft wide.
Who owns Twin Sisters RD over Moose River?
It is owned by the County Highway Agency.