30th Street over Boulder Lefthand Ditch
GoodBoulder County, Colorado · 400 Ft So of Pearl ST · Structure no. BOLD-07-1.49-3A
- Built
- 2011
- 14 years old
- Condition
- Good
- inspected February 2025
- Type
- Slab
- Concrete Continuous
- Length
- 68 ft
- 3 main spans
- Daily traffic
- 20,225
- 2023 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
30th Street over Boulder Lefthand Ditch is a concrete continuous slab carrying 30th Street over Boulder Lefthand Ditch in Boulder County, Colorado. It was built in 2011, so it is 14 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 20,225 vehicles a day, roughly 4% of them trucks, projected to reach 24,270 by 2043. The structure is 68 ft (20.7 m) long and 87 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 8 Very Good | No problems noted. |
| 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 Lefthand Ditch built?
It was built in 2011, making it 14 years old in 2025.
What condition is 30th Street over Boulder Lefthand Ditch 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 30th Street over Boulder Lefthand Ditch carry?
About 20,225 vehicles per day (2023 count), of which roughly 4% are trucks.
How long is 30th Street over Boulder Lefthand Ditch?
The structure is 68 ft (20.7 m) long with a longest span of 23 ft (7.1 m) and a deck 87 ft wide.
Who owns 30th Street over Boulder Lefthand Ditch?
It is owned by the City or Municipal Highway Agency.