S 43 over Seymour Creek
GoodDeer Lodge County, Montana · 12M NW Wise River · Structure no. P00046053+00751
- Built
- 2006
- 19 years old
- Condition
- Good
- inspected February 2025
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 53 ft
- 1 main span
- Daily traffic
- 485
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
S 43 over Seymour Creek is a prestressed concrete stringer/multi-beam or girder carrying S 43 over Seymour Creek in Deer Lodge County, Montana. It was built in 2006, so it is 19 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 485 vehicles a day, roughly 7% of them trucks, projected to reach 509 by 2043. The structure is 53 ft (16.3 m) long and 38 ft wide. If it were closed, the detour would be 80.2 mi (129 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 43 over Seymour Creek built?
It was built in 2006, making it 19 years old in 2025.
What condition is S 43 over Seymour 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 February 2025.
How much traffic does S 43 over Seymour Creek carry?
About 485 vehicles per day (2023 count), of which roughly 7% are trucks.
How long is S 43 over Seymour Creek?
The structure is 53 ft (16.3 m) long with a longest span of 52 ft (16 m) and a deck 38 ft wide.
Who owns S 43 over Seymour Creek?
It is owned by the State Highway Agency.