S 261 over Shadwell Creek
GoodRichland County, Montana · 19M S Sidney · Structure no. S00261038+05001
- Built
- 1971
- 54 years old
- Condition
- Good
- inspected November 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 132 ft
- 2 main spans
- Daily traffic
- 95
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
S 261 over Shadwell Creek is a prestressed concrete stringer/multi-beam or girder carrying S 261 over Shadwell Creek in Richland County, Montana. It was built in 1971, so it is 54 years old, older than the Montana average of 47 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 95 vehicles a day, roughly 17% of them trucks, projected to reach 100 by 2043. The structure is 132 ft (40.2 m) long and 34 ft wide. If it were closed, the detour would be 123.7 mi (199 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 7 Good | Some minor problems. |
| 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 S 261 over Shadwell Creek built?
It was built in 1971, making it 54 years old in 2025.
What condition is S 261 over Shadwell Creek in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in November 2023.
How much traffic does S 261 over Shadwell Creek carry?
About 95 vehicles per day (2023 count), of which roughly 17% are trucks.
How long is S 261 over Shadwell Creek?
The structure is 132 ft (40.2 m) long with a longest span of 65 ft (19.8 m) and a deck 34 ft wide.
Who owns S 261 over Shadwell Creek?
It is owned by the State Highway Agency.