Mill Creek RD over Yellowstone River 043
FairPark County, Montana · 3M NE Pray · Structure no. L34204000+05001
- Built
- 1960
- 65 years old
- Condition
- Fair
- inspected August 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 364 ft
- 4 main spans
- Daily traffic
- 247
- 2023 count
- Owner
- County
- County Highway Agency
About this bridge
Mill Creek RD over Yellowstone River 043 is a steel continuous stringer/multi-beam or girder carrying Mill Creek RD over Yellowstone River 043 in Park County, Montana. It was built in 1960, so it is 65 years old, older than the Montana average of 47 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 247 vehicles a day, roughly 3% of them trucks, projected to reach 264 by 2043. The structure is 364 ft (110.9 m) long and 27 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 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Mill Creek RD over Yellowstone River 043 built?
It was built in 1960, making it 65 years old in 2025.
What condition is Mill Creek RD over Yellowstone River 043 in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in August 2024.
How much traffic does Mill Creek RD over Yellowstone River 043 carry?
About 247 vehicles per day (2023 count), of which roughly 3% are trucks.
How long is Mill Creek RD over Yellowstone River 043?
The structure is 364 ft (110.9 m) long with a longest span of 100 ft (30.5 m) and a deck 27 ft wide.
Who owns Mill Creek RD over Yellowstone River 043?
It is owned by the County Highway Agency.