Old Ulm Cascade RD over Sep I 15
GoodCascade County, Montana · 3M SW Ulm · Structure no. L07565005+08001
- Built
- 1970
- 55 years old
- Condition
- Good
- inspected March 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 301 ft
- 4 main spans
- Daily traffic
- 100
- 2025 count
- Owner
- State
- State Highway Agency
About this bridge
Old Ulm Cascade RD over Sep I 15 is a prestressed concrete stringer/multi-beam or girder carrying Old Ulm Cascade RD over Sep I 15 in Cascade 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 100 vehicles a day, roughly 3% of them trucks, projected to reach 100 by 2040. The structure is 301 ft (91.7 m) long and 32 ft wide. If it were closed, the detour would be 11.8 mi (19 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. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Old Ulm Cascade RD over Sep I 15 built?
It was built in 1970, making it 55 years old in 2025.
What condition is Old Ulm Cascade RD over Sep I 15 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 March 2024.
How much traffic does Old Ulm Cascade RD over Sep I 15 carry?
About 100 vehicles per day (2025 count), of which roughly 3% are trucks.
How long is Old Ulm Cascade RD over Sep I 15?
The structure is 301 ft (91.7 m) long with a longest span of 100 ft (30.5 m) and a deck 32 ft wide.
Who owns Old Ulm Cascade RD over Sep I 15?
It is owned by the State Highway Agency.