County Road 524 over N Fk Thirten Mile CR 091
PoorDawson County, Montana · 9M NE Bloomfield · Structure no. L11410004+09001
- Built
- 1983
- 42 years old
- Condition
- Poor
- inspected January 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 38 ft
- 2 main spans
- Daily traffic
- 100
- 2025 count
- Owner
- County
- County Highway Agency
About this bridge
County Road 524 over N Fk Thirten Mile CR 091 is a steel stringer/multi-beam or girder carrying County Road 524 over N Fk Thirten Mile CR 091 in Dawson County, Montana. It was built in 1983, so it is 42 years old, younger 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 100 vehicles a day, roughly 3% of them trucks, projected to reach 100 by 2040. The structure is 38 ft (11.6 m) long and 20 ft wide. If it were closed, the detour would be 18 mi (29 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 County Road 524 over N Fk Thirten Mile CR 091 built?
It was built in 1983, making it 42 years old in 2025.
What condition is County Road 524 over N Fk Thirten Mile CR 091 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 January 2024.
How much traffic does County Road 524 over N Fk Thirten Mile CR 091 carry?
About 100 vehicles per day (2025 count), of which roughly 3% are trucks.
How long is County Road 524 over N Fk Thirten Mile CR 091?
The structure is 38 ft (11.6 m) long with a longest span of 19 ft (5.8 m) and a deck 20 ft wide.
Who owns County Road 524 over N Fk Thirten Mile CR 091?
It is owned by the County Highway Agency.