US 287 Ml over Dry Creek
FairBoulder County, Colorado · Ken Pratt Blvd-Longmont · Structure no. D-16-D
- Built
- 1947
- 78 years old, rebuilt 1970
- Condition
- Fair
- inspected August 2023
- Type
- Culvert
- Concrete
- Length
- 21 ft
- 2 main spans
- Daily traffic
- 22,000
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
US 287 Ml over Dry Creek is a concrete culvert carrying US 287 Ml over Dry Creek in Boulder County, Colorado. It was built in 1947 and reconstructed in 1970, so it is 78 years old, older 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 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 22,000 vehicles a day, roughly 5% of them trucks, projected to reach 25,300 by 2040. The structure is 21 ft (6.4 m) long and 345 ft wide. If it were closed, the detour would be 3.1 mi (5 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 287 Ml over Dry Creek built?
It was built in 1947, making it 78 years old in 2025. It was reconstructed in 1970.
What condition is US 287 Ml over Dry Creek 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 287 Ml over Dry Creek carry?
About 22,000 vehicles per day (2020 count), of which roughly 5% are trucks.
How long is US 287 Ml over Dry Creek?
The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m) and a deck 345 ft wide.
Who owns US 287 Ml over Dry Creek?
It is owned by the State Highway Agency.