S Main Ave over Mission Creek 052
PoorLake County, Montana · ST Ignatius-S Main ST · Structure no. M24100000+00101
- Built
- 1929
- 96 years old, rebuilt 1935
- Condition
- Poor
- inspected August 2023
- Type
- Tee Beam
- Concrete
- Length
- 33 ft
- 1 main span
- Daily traffic
- 2,233
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
S Main Ave over Mission Creek 052 is a concrete tee beam carrying S Main Ave over Mission Creek 052 in Lake County, Montana. It was built in 1929 and reconstructed in 1935, 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 2,233 vehicles a day, roughly 3% of them trucks, projected to reach 2,378 by 2043. The structure is 33 ft (10.1 m) long and 26 ft wide. If it were closed, the detour would be 1.9 mi (3 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was S Main Ave over Mission Creek 052 built?
It was built in 1929, making it 96 years old in 2025. It was reconstructed in 1935.
What condition is S Main Ave over Mission Creek 052 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 August 2023.
How much traffic does S Main Ave over Mission Creek 052 carry?
About 2,233 vehicles per day (2023 count), of which roughly 3% are trucks.
How long is S Main Ave over Mission Creek 052?
The structure is 33 ft (10.1 m) long with a longest span of 31 ft (9.4 m) and a deck 26 ft wide.
Who owns S Main Ave over Mission Creek 052?
It is owned by the State Highway Agency.