Boyd Cooney Dam RD over Cooney Res Spillway 014
FairCarbon County, Montana · 7M W Boyd · Structure no. L05001008+05001
- Built
- 1982
- 43 years old
- Condition
- Fair
- inspected November 2023
- Type
- Tee Beam
- Prestressed Concrete
- Length
- 74 ft
- 1 main span
- Daily traffic
- 593
- 2023 count
- Owner
- County
- County Highway Agency
About this bridge
Boyd Cooney Dam RD over Cooney Res Spillway 014 is a prestressed concrete tee beam carrying Boyd Cooney Dam RD over Cooney Res Spillway 014 in Carbon County, Montana. It was built in 1982, so it is 43 years old, younger than the Montana average of 47 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 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 593 vehicles a day, roughly 3% of them trucks, projected to reach 623 by 2043. The structure is 74 ft (22.6 m) long and 26 ft wide. If it were closed, the detour would be 36 mi (58 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 | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Boyd Cooney Dam RD over Cooney Res Spillway 014 built?
It was built in 1982, making it 43 years old in 2025.
What condition is Boyd Cooney Dam RD over Cooney Res Spillway 014 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 2023.
How much traffic does Boyd Cooney Dam RD over Cooney Res Spillway 014 carry?
About 593 vehicles per day (2023 count), of which roughly 3% are trucks.
How long is Boyd Cooney Dam RD over Cooney Res Spillway 014?
The structure is 74 ft (22.6 m) long with a longest span of 72 ft (21.9 m) and a deck 26 ft wide.
Who owns Boyd Cooney Dam RD over Cooney Res Spillway 014?
It is owned by the County Highway Agency.