Frntage Road 81020 over Macks Creek 038
PoorCuster County, Montana · 23M NE Miles City · Structure no. L09004006+07001
- Built
- 1929
- 96 years old, rebuilt 1948
- Condition
- Poor
- inspected September 2024
- Type
- Stringer/Multi-beam or Girder
- Wood or Timber
- Length
- 39 ft
- 2 main spans
- Daily traffic
- 507
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
Frntage Road 81020 over Macks Creek 038 is a wood or timber stringer/multi-beam or girder carrying Frntage Road 81020 over Macks Creek 038 in Custer County, Montana. It was built in 1929 and reconstructed in 1948, so it is 96 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 507 vehicles a day, roughly 3% of them trucks, projected to reach 540 by 2043. The structure is 39 ft (12 m) long and 32 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 7 Good | Some minor problems. |
| Superstructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| 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 Frntage Road 81020 over Macks Creek 038 built?
It was built in 1929, making it 96 years old in 2025. It was reconstructed in 1948.
What condition is Frntage Road 81020 over Macks Creek 038 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 September 2024.
How much traffic does Frntage Road 81020 over Macks Creek 038 carry?
About 507 vehicles per day (2023 count), of which roughly 3% are trucks.
How long is Frntage Road 81020 over Macks Creek 038?
The structure is 39 ft (12 m) long with a longest span of 19 ft (5.8 m) and a deck 32 ft wide.
Who owns Frntage Road 81020 over Macks Creek 038?
It is owned by the State Highway Agency.