S 556-THOMPSON R R over Mcgregor Creek
GoodFlathead County, Montana · 18M SW Marion · Structure no. S00556043+09761
- Built
- 1992
- 33 years old
- Condition
- Good
- inspected July 2023
- Type
- Slab
- Prestressed Concrete
- Length
- 22 ft
- 1 main span
- Daily traffic
- 61
- 2023 count
- Owner
- County
- County Highway Agency
About this bridge
S 556-THOMPSON R R over Mcgregor Creek is a prestressed concrete slab carrying S 556-THOMPSON R R over Mcgregor Creek in Flathead County, Montana. It was built in 1992, so it is 33 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 61 vehicles a day, projected to reach 64 by 2043. The structure is 22 ft (6.7 m) long and 26 ft wide. If it were closed, the detour would be 39.8 mi (64 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 | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was S 556-THOMPSON R R over Mcgregor Creek built?
It was built in 1992, making it 33 years old in 2025.
What condition is S 556-THOMPSON R R over Mcgregor 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 2023.
How much traffic does S 556-THOMPSON R R over Mcgregor Creek carry?
About 61 vehicles per day (2023 count).
How long is S 556-THOMPSON R R over Mcgregor Creek?
The structure is 22 ft (6.7 m) long with a longest span of 21 ft (6.4 m) and a deck 26 ft wide.
Who owns S 556-THOMPSON R R over Mcgregor Creek?
It is owned by the County Highway Agency.