US 287 Nbnd over Rock Creek
GoodBoulder County, Colorado · 0.4 MI S of NW Pkwy · Structure no. E-16-MT
- Built
- 1993
- 32 years old
- Condition
- Good
- inspected February 2025
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 112 ft
- 1 main span
- Daily traffic
- 16,500
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
US 287 Nbnd over Rock Creek is a prestressed concrete stringer/multi-beam or girder carrying US 287 Nbnd over Rock Creek in Boulder 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 16,500 vehicles a day, roughly 4% of them trucks, projected to reach 19,470 by 2040. The structure is 112 ft (34.1 m) long and 40 ft wide. If it were closed, the detour would be 9.9 mi (16 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 287 Nbnd over Rock Creek built?
It was built in 1993, making it 32 years old in 2025.
What condition is US 287 Nbnd over Rock Creek in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in February 2025.
How much traffic does US 287 Nbnd over Rock Creek carry?
About 16,500 vehicles per day (2020 count), of which roughly 4% are trucks.
How long is US 287 Nbnd over Rock Creek?
The structure is 112 ft (34.1 m) long with a longest span of 108 ft (33 m) and a deck 40 ft wide.
Who owns US 287 Nbnd over Rock Creek?
It is owned by the State Highway Agency.