Sixmile RD over Broadwater Canal 016
FairBroadwater County, Montana · 2M N Toston · Structure no. L04414000+01001
- Built
- 1976
- 49 years old, rebuilt 1991
- Condition
- Fair
- inspected November 2023
- Type
- Channel Beam
- Prestressed Concrete
- Length
- 23 ft
- 1 main span
- Daily traffic
- 100
- 2025 count
- Owner
- County
- County Highway Agency
About this bridge
Sixmile RD over Broadwater Canal 016 is a prestressed concrete channel beam carrying Sixmile RD over Broadwater Canal 016 in Broadwater County, Montana. It was built in 1976 and reconstructed in 1991, so it is 49 years old, older 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 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 100 vehicles a day, roughly 3% of them trucks, projected to reach 100 by 2040. The structure is 23 ft (7 m) long and 19 ft wide. If it were closed, the detour would be 5 mi (8 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 Sixmile RD over Broadwater Canal 016 built?
It was built in 1976, making it 49 years old in 2025. It was reconstructed in 1991.
What condition is Sixmile RD over Broadwater Canal 016 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 Sixmile RD over Broadwater Canal 016 carry?
About 100 vehicles per day (2025 count), of which roughly 3% are trucks.
How long is Sixmile RD over Broadwater Canal 016?
The structure is 23 ft (7 m) long with a longest span of 22 ft (6.7 m) and a deck 19 ft wide.
Who owns Sixmile RD over Broadwater Canal 016?
It is owned by the County Highway Agency.