SH 257 Ml over Larimer County Canal
FairWeld County, Colorado · 3.5 MI N. of SH392/WINDSO · Structure no. B-17-DM
- Built
- 1984
- 41 years old
- Condition
- Fair
- inspected February 2025
- Type
- Culvert
- Concrete
- Length
- 46 ft
- 3 main spans
- Daily traffic
- 5,100
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
SH 257 Ml over Larimer County Canal is a concrete culvert carrying SH 257 Ml over Larimer County Canal in Weld County, Colorado. It was built in 1984, so it is 41 years old, younger than the Colorado average of 42.2 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 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 5,100 vehicles a day, roughly 14% of them trucks, projected to reach 8,466 by 2040. The structure is 46 ft (14 m) long and 86 ft wide. If it were closed, the detour would be 3.7 mi (6 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 |
|---|---|---|
| Channel and channel protection | 7 Good | Some minor problems. |
| Culvert | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SH 257 Ml over Larimer County Canal built?
It was built in 1984, making it 41 years old in 2025.
What condition is SH 257 Ml over Larimer County Canal 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 February 2025.
How much traffic does SH 257 Ml over Larimer County Canal carry?
About 5,100 vehicles per day (2020 count), of which roughly 14% are trucks.
How long is SH 257 Ml over Larimer County Canal?
The structure is 46 ft (14 m) long with a longest span of 16 ft (5 m) and a deck 86 ft wide.
Who owns SH 257 Ml over Larimer County Canal?
It is owned by the State Highway Agency.