S 5 over Big Muddy Creek
FairSheridan County, Montana · 3M SE Redstone · Structure no. P00022025+04861
- Built
- 2012
- 13 years old
- Condition
- Fair
- inspected December 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 149 ft
- 3 main spans
- Daily traffic
- 511
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
S 5 over Big Muddy Creek is a prestressed concrete stringer/multi-beam or girder carrying S 5 over Big Muddy Creek in Sheridan County, Montana. It was built in 2012, so it is 13 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 511 vehicles a day, roughly 18% of them trucks, projected to reach 537 by 2043. The structure is 149 ft (45.5 m) long and 35 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 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 | 8 Very Good | No problems noted. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was S 5 over Big Muddy Creek built?
It was built in 2012, making it 13 years old in 2025.
What condition is S 5 over Big Muddy Creek 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 December 2024.
How much traffic does S 5 over Big Muddy Creek carry?
About 511 vehicles per day (2023 count), of which roughly 18% are trucks.
How long is S 5 over Big Muddy Creek?
The structure is 149 ft (45.5 m) long with a longest span of 72 ft (21.8 m) and a deck 35 ft wide.
Who owns S 5 over Big Muddy Creek?
It is owned by the State Highway Agency.