Mcleod Main ST over West Boulder River 025
PoorClosed to trafficSweet Grass County, Montana · Mcleod · Structure no. L49143000+06001
- Built
- 1912
- 113 years old
- Condition
- Poor
- inspected July 2024
- Type
- Truss - Thru
- Steel
- Length
- 62 ft
- 1 main span
- Daily traffic
- 100
- 2025 count
- Owner
- County
- County Highway Agency
About this bridge
Mcleod Main ST over West Boulder River 025 is a steel truss - thru carrying Mcleod Main ST over West Boulder River 025 in Sweet Grass County, Montana. It was built in 1912, so it is 113 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 3 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. Its operating status is: closed to all traffic.
It carries about 100 vehicles a day, roughly 3% of them trucks, projected to reach 100 by 2040. The structure is 62 ft (18.9 m) long and 16 ft wide. If it were closed, the detour would be 123.7 mi (199 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Mcleod Main ST over West Boulder River 025 built?
It was built in 1912, making it 113 years old in 2025.
What condition is Mcleod Main ST over West Boulder River 025 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 July 2024.
How much traffic does Mcleod Main ST over West Boulder River 025 carry?
About 100 vehicles per day (2025 count), of which roughly 3% are trucks.
How long is Mcleod Main ST over West Boulder River 025?
The structure is 62 ft (18.9 m) long with a longest span of 60 ft (18.3 m) and a deck 16 ft wide.
Who owns Mcleod Main ST over West Boulder River 025?
It is owned by the County Highway Agency.