S 5 over Antelope Creek
GoodSheridan County, Montana · 2M S Antelope · Structure no. P00022051+03461
- Built
- 1986
- 39 years old
- Condition
- Good
- inspected September 2023
- Type
- Culvert
- Steel
- Length
- 20 ft
- 1 main span
- Daily traffic
- 1,120
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
S 5 over Antelope Creek is a steel culvert carrying S 5 over Antelope Creek in Sheridan County, Montana. It was built in 1986, so it is 39 years old, younger 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 1,120 vehicles a day, roughly 15% of them trucks, projected to reach 1,176 by 2043. The structure is 20 ft (6.1 m) long. 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 |
|---|---|---|
| Channel and channel protection | 7 Good | Some minor problems. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was S 5 over Antelope Creek built?
It was built in 1986, making it 39 years old in 2025.
What condition is S 5 over Antelope 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 September 2023.
How much traffic does S 5 over Antelope Creek carry?
About 1,120 vehicles per day (2023 count), of which roughly 15% are trucks.
How long is S 5 over Antelope Creek?
The structure is 20 ft (6.1 m) long with a longest span of 20 ft (6.1 m).
Who owns S 5 over Antelope Creek?
It is owned by the State Highway Agency.