17th Street over Boulder Creek
FairBoulder County, Colorado · 0.4 MI So of Canyon Blvd. · Structure no. BOLD-03-0.36-1A
- Built
- 1985
- 40 years old
- Condition
- Fair
- inspected February 2025
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 105 ft
- 1 main span
- Daily traffic
- 7,658
- 2023 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
17th Street over Boulder Creek is a prestressed concrete box beam or girders - multiple carrying 17th Street over Boulder Creek in Boulder County, Colorado. It was built in 1985, so it is 40 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 7,658 vehicles a day, roughly 2% of them trucks, projected to reach 9,190 by 2043. The structure is 105 ft (31.9 m) long and 56 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 | 7 Good | Some minor problems. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 17th Street over Boulder Creek built?
It was built in 1985, making it 40 years old in 2025.
What condition is 17th Street over 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 February 2025.
How much traffic does 17th Street over Boulder Creek carry?
About 7,658 vehicles per day (2023 count), of which roughly 2% are trucks.
How long is 17th Street over Boulder Creek?
The structure is 105 ft (31.9 m) long with a longest span of 99 ft (30.2 m) and a deck 56 ft wide.
Who owns 17th Street over Boulder Creek?
It is owned by the City or Municipal Highway Agency.