N 55 over Pipestone Creek
GoodJefferson County, Montana · 1M W Whitehall · Structure no. 000000000005943
- Built
- 2018
- 7 years old
- Condition
- Good
- inspected July 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 140 ft
- 3 main spans
- Daily traffic
- 2,969
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
N 55 over Pipestone Creek is a prestressed concrete stringer/multi-beam or girder carrying N 55 over Pipestone Creek in Jefferson County, Montana. It was built in 2018, so it is 7 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 2,969 vehicles a day, roughly 10% of them trucks, projected to reach 3,147 by 2043. The structure is 140 ft (42.7 m) long and 42 ft wide. If it were closed, the detour would be 29.2 mi (47 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 | 7 Good | Some minor problems. |
| 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 N 55 over Pipestone Creek built?
It was built in 2018, making it 7 years old in 2025.
What condition is N 55 over Pipestone 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 July 2024.
How much traffic does N 55 over Pipestone Creek carry?
About 2,969 vehicles per day (2023 count), of which roughly 10% are trucks.
How long is N 55 over Pipestone Creek?
The structure is 140 ft (42.7 m) long with a longest span of 47 ft (14.4 m) and a deck 42 ft wide.
Who owns N 55 over Pipestone Creek?
It is owned by the State Highway Agency.