CO RD 54A over Middle Boulder Creek
FairBoulder County, Colorado · Castle Rock Pull Off · Structure no. BCPOS-LOWER BR
- Built
- 1917
- 108 years old
- Condition
- Fair
- inspected January 2025
- Type
- Slab
- Concrete
- Length
- 24 ft
- 1 main span
- Daily traffic
- 70
- 2023 count
- Owner
- Local
- Other Local Agency
About this bridge
CO RD 54A over Middle Boulder Creek is a concrete slab carrying CO RD 54A over Middle Boulder Creek in Boulder County, Colorado. It was built in 1917, so it is 108 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 70 vehicles a day, roughly 4% of them trucks, projected to reach 83 by 2043. The structure is 24 ft (7.2 m) long and 22 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 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 CO RD 54A over Middle Boulder Creek built?
It was built in 1917, making it 108 years old in 2025.
What condition is CO RD 54A over Middle Boulder 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 January 2025.
How much traffic does CO RD 54A over Middle Boulder Creek carry?
About 70 vehicles per day (2023 count), of which roughly 4% are trucks.
How long is CO RD 54A over Middle Boulder Creek?
The structure is 24 ft (7.2 m) long with a longest span of 20 ft (6.2 m) and a deck 22 ft wide.
Who owns CO RD 54A over Middle Boulder Creek?
It is owned by the Other Local Agency.