Custer Frtg RD over Mill Creek 018
FairYellowstone County, Montana · 4M E Pompey`s Pillar · Structure no. L56788031+00001
- Built
- 1940
- 85 years old
- Condition
- Fair
- inspected October 2024
- Type
- Stringer/Multi-beam or Girder
- Wood or Timber
- Length
- 57 ft
- 3 main spans
- Daily traffic
- 147
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
Custer Frtg RD over Mill Creek 018 is a wood or timber stringer/multi-beam or girder carrying Custer Frtg RD over Mill Creek 018 in Yellowstone County, Montana. It was built in 1940, so it is 85 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 147 vehicles a day, roughly 8% of them trucks, projected to reach 155 by 2043. The structure is 57 ft (17.5 m) long and 30 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 | 7 Good | Some minor problems. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Custer Frtg RD over Mill Creek 018 built?
It was built in 1940, making it 85 years old in 2025.
What condition is Custer Frtg RD over Mill Creek 018 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 October 2024.
How much traffic does Custer Frtg RD over Mill Creek 018 carry?
About 147 vehicles per day (2023 count), of which roughly 8% are trucks.
How long is Custer Frtg RD over Mill Creek 018?
The structure is 57 ft (17.5 m) long with a longest span of 19 ft (5.8 m) and a deck 30 ft wide.
Who owns Custer Frtg RD over Mill Creek 018?
It is owned by the State Highway Agency.