IRR - S 200 over Magpie Creek
GoodSanders County, Montana · 5M SE Perma · Structure no. P00006101+02421
- Built
- 1986
- 39 years old
- Condition
- Good
- inspected May 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 47 ft
- 1 main span
- Daily traffic
- 1,980
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
IRR - S 200 over Magpie Creek is a prestressed concrete stringer/multi-beam or girder carrying IRR - S 200 over Magpie Creek in Sanders 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 1,980 vehicles a day, roughly 5% of them trucks, projected to reach 2,079 by 2043. The structure is 47 ft (14.3 m) long and 42 ft wide. 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 |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 8 Very Good | No problems noted. |
| 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 IRR - S 200 over Magpie Creek built?
It was built in 1986, making it 39 years old in 2025.
What condition is IRR - S 200 over Magpie 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 May 2024.
How much traffic does IRR - S 200 over Magpie Creek carry?
About 1,980 vehicles per day (2023 count), of which roughly 5% are trucks.
How long is IRR - S 200 over Magpie Creek?
The structure is 47 ft (14.3 m) long with a longest span of 45 ft (13.7 m) and a deck 42 ft wide.
Who owns IRR - S 200 over Magpie Creek?
It is owned by the State Highway Agency.