Coalton Drive over Rock Creek
FairBoulder County, Colorado · 0.15 MI East of Mccaslin · Structure no. SUPER-COALTON
- Built
- 2000
- 25 years old
- Condition
- Fair
- inspected February 2025
- Type
- Culvert
- Concrete
- Length
- 50 ft
- 3 main spans
- Daily traffic
- 4,964
- 2023 count
- Owner
- Town / Township
- Town or Township Highway Agency
About this bridge
Coalton Drive over Rock Creek is a concrete culvert carrying Coalton Drive over Rock Creek in Boulder County, Colorado. It was built in 2000, so it is 25 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 4,964 vehicles a day, roughly 3% of them trucks, projected to reach 5,956 by 2042. The structure is 50 ft (15.2 m) long and 157 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 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 Coalton Drive over Rock Creek built?
It was built in 2000, making it 25 years old in 2025.
What condition is Coalton Drive over Rock 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 February 2025.
How much traffic does Coalton Drive over Rock Creek carry?
About 4,964 vehicles per day (2023 count), of which roughly 3% are trucks.
How long is Coalton Drive over Rock Creek?
The structure is 50 ft (15.2 m) long with a longest span of 16 ft (4.9 m) and a deck 157 ft wide.
Who owns Coalton Drive over Rock Creek?
It is owned by the Town or Township Highway Agency.