US 285 Ml & Ramp over Parmalee Gulch
FairJefferson County, Colorado · At Indian Hills RD Inters · Structure no. F-16-SA
- Built
- 1993
- 32 years old
- Condition
- Fair
- inspected August 2023
- Type
- Culvert
- Concrete
- Length
- 21 ft
- 2 main spans
- Daily traffic
- 27,000
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
US 285 Ml & Ramp over Parmalee Gulch is a concrete culvert carrying US 285 Ml & Ramp over Parmalee Gulch in Jefferson County, Colorado. It was built in 1993, so it is 32 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 27,000 vehicles a day, roughly 3% of them trucks, projected to reach 34,020 by 2040. The structure is 21 ft (6.4 m) long. If it were closed, the detour would be 19.3 mi (31 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 | 8 Very Good | No problems noted. |
| Culvert | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 285 Ml & Ramp over Parmalee Gulch built?
It was built in 1993, making it 32 years old in 2025.
What condition is US 285 Ml & Ramp over Parmalee Gulch 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 August 2023.
How much traffic does US 285 Ml & Ramp over Parmalee Gulch carry?
About 27,000 vehicles per day (2020 count), of which roughly 3% are trucks.
How long is US 285 Ml & Ramp over Parmalee Gulch?
The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m).
Who owns US 285 Ml & Ramp over Parmalee Gulch?
It is owned by the State Highway Agency.