Old US HWY 93 over Dayton Creek 105
FairLake County, Montana · Dayton · Structure no. L24742002+08501
- Built
- 1930
- 95 years old
- Condition
- Fair
- inspected March 2024
- Type
- Tee Beam
- Concrete
- Length
- 64 ft
- 1 main span
- Daily traffic
- 100
- 2025 count
- Owner
- State
- State Highway Agency
About this bridge
Old US HWY 93 over Dayton Creek 105 is a concrete tee beam carrying Old US HWY 93 over Dayton Creek 105 in Lake County, Montana. It was built in 1930, so it is 95 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 100 vehicles a day, roughly 3% of them trucks, projected to reach 100 by 2040. The structure is 64 ft (19.5 m) long and 24 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 | 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, 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 Old US HWY 93 over Dayton Creek 105 built?
It was built in 1930, making it 95 years old in 2025.
What condition is Old US HWY 93 over Dayton Creek 105 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 March 2024.
How much traffic does Old US HWY 93 over Dayton Creek 105 carry?
About 100 vehicles per day (2025 count), of which roughly 3% are trucks.
How long is Old US HWY 93 over Dayton Creek 105?
The structure is 64 ft (19.5 m) long with a longest span of 25 ft (7.6 m) and a deck 24 ft wide.
Who owns Old US HWY 93 over Dayton Creek 105?
It is owned by the State Highway Agency.