30th Street over Boulder Creek
FairBoulder County, Colorado · 0.79 MI N. of Baseline RD · Structure no. BOLD-07-0.79-2A
- Built
- 1963
- 62 years old, rebuilt 1997
- Condition
- Fair
- inspected February 2025
- Type
- Tee Beam
- Prestressed Concrete
- Length
- 62 ft
- 1 main span
- Daily traffic
- 33,663
- 2023 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
30th Street over Boulder Creek is a prestressed concrete tee beam carrying 30th Street over Boulder Creek in Boulder County, Colorado. It was built in 1963 and reconstructed in 1997, so it is 62 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 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 33,663 vehicles a day, roughly 3% of them trucks, projected to reach 40,396 by 2043. The structure is 62 ft (18.9 m) long and 73 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 | 7 Good | Some minor problems. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 30th Street over Boulder Creek built?
It was built in 1963, making it 62 years old in 2025. It was reconstructed in 1997.
What condition is 30th 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 30th Street over Boulder Creek carry?
About 33,663 vehicles per day (2023 count), of which roughly 3% are trucks.
How long is 30th Street over Boulder Creek?
The structure is 62 ft (18.9 m) long with a longest span of 59 ft (18 m) and a deck 73 ft wide.
Who owns 30th Street over Boulder Creek?
It is owned by the City or Municipal Highway Agency.