Sun River RD over Sep West Hill-I 15 127
PoorCascade County, Montana · Great Falls · Structure no. L07852000+01001
- Built
- 1967
- 58 years old
- Condition
- Poor
- inspected August 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 320 ft
- 6 main spans
- Daily traffic
- 1,364
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
Sun River RD over Sep West Hill-I 15 127 is a prestressed concrete stringer/multi-beam or girder carrying Sun River RD over Sep West Hill-I 15 127 in Cascade County, Montana. It was built in 1967, so it is 58 years old, older than the Montana average of 47 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 1,364 vehicles a day, projected to reach 1,432 by 2043. The structure is 320 ft (97.5 m) long and 34 ft wide. If it were closed, the detour would be 5 mi (8 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Sun River RD over Sep West Hill-I 15 127 built?
It was built in 1967, making it 58 years old in 2025.
What condition is Sun River RD over Sep West Hill-I 15 127 in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in August 2024.
How much traffic does Sun River RD over Sep West Hill-I 15 127 carry?
About 1,364 vehicles per day (2023 count).
How long is Sun River RD over Sep West Hill-I 15 127?
The structure is 320 ft (97.5 m) long with a longest span of 67 ft (20.3 m) and a deck 34 ft wide.
Who owns Sun River RD over Sep West Hill-I 15 127?
It is owned by the State Highway Agency.