Old Shelby RD over Dry Fk Marias River 013
GoodPondera County, Montana · 3M NE Conrad · Structure no. L37101003+00001
- Built
- 1970
- 55 years old
- Condition
- Good
- inspected November 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 134 ft
- 2 main spans
- Daily traffic
- 79
- 2023 count
- Owner
- County
- County Highway Agency
About this bridge
Old Shelby RD over Dry Fk Marias River 013 is a prestressed concrete stringer/multi-beam or girder carrying Old Shelby RD over Dry Fk Marias River 013 in Pondera County, Montana. It was built in 1970, so it is 55 years old, older 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 79 vehicles a day, roughly 3% of them trucks, projected to reach 83 by 2043. The structure is 134 ft (40.8 m) long and 30 ft wide. If it were closed, the detour would be 9.9 mi (16 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 | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Old Shelby RD over Dry Fk Marias River 013 built?
It was built in 1970, making it 55 years old in 2025.
What condition is Old Shelby RD over Dry Fk Marias River 013 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 2024.
How much traffic does Old Shelby RD over Dry Fk Marias River 013 carry?
About 79 vehicles per day (2023 count), of which roughly 3% are trucks.
How long is Old Shelby RD over Dry Fk Marias River 013?
The structure is 134 ft (40.8 m) long with a longest span of 65 ft (19.8 m) and a deck 30 ft wide.
Who owns Old Shelby RD over Dry Fk Marias River 013?
It is owned by the County Highway Agency.