US 89 over S Fk Dry Fk Marias River
GoodPondera County, Montana · 5M SE Dupuyer · Structure no. P00003067+06141
- Built
- 2013
- 12 years old
- Condition
- Good
- inspected November 2023
- Type
- Slab
- Prestressed Concrete
- Length
- 39 ft
- 1 main span
- Daily traffic
- 518
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 89 over S Fk Dry Fk Marias River is a prestressed concrete slab carrying US 89 over S Fk Dry Fk Marias River in Pondera County, Montana. It was built in 2013, so it is 12 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 518 vehicles a day, roughly 6% of them trucks, projected to reach 544 by 2043. The structure is 39 ft (11.8 m) long and 39 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 | 8 Very Good | No problems noted. |
| Superstructure | 8 Very Good | No problems noted. |
| 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 US 89 over S Fk Dry Fk Marias River built?
It was built in 2013, making it 12 years old in 2025.
What condition is US 89 over S Fk Dry Fk Marias River 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 November 2023.
How much traffic does US 89 over S Fk Dry Fk Marias River carry?
About 518 vehicles per day (2023 count), of which roughly 6% are trucks.
How long is US 89 over S Fk Dry Fk Marias River?
The structure is 39 ft (11.8 m) long with a longest span of 32 ft (9.8 m) and a deck 39 ft wide.
Who owns US 89 over S Fk Dry Fk Marias River?
It is owned by the State Highway Agency.