20th Avenue over Lena Gulch
GoodJefferson County, Colorado · Inlet Maple Grove Reservr · Structure no. LKWD-07-0.00-01
- Built
- 1994
- 31 years old
- Condition
- Good
- inspected April 2021
- Type
- Culvert
- Concrete
- Length
- 67 ft
- 5 main spans
- Daily traffic
- 7,150
- 2021 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
20th Avenue over Lena Gulch is a concrete culvert carrying 20th Avenue over Lena Gulch in Jefferson County, Colorado. It was built in 1994, so it is 31 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 7,150 vehicles a day, roughly 4% of them trucks, projected to reach 8,223 by 2041. The structure is 67 ft (20.3 m) long and 60 ft wide. If it were closed, the detour would be 3.1 mi (5 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 |
|---|---|---|
| Channel and channel protection | 8 Very Good | No problems noted. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 20th Avenue over Lena Gulch built?
It was built in 1994, making it 31 years old in 2025.
What condition is 20th Avenue over Lena Gulch 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 April 2021.
How much traffic does 20th Avenue over Lena Gulch carry?
About 7,150 vehicles per day (2021 count), of which roughly 4% are trucks.
How long is 20th Avenue over Lena Gulch?
The structure is 67 ft (20.3 m) long with a longest span of 13 ft (4 m) and a deck 60 ft wide.
Who owns 20th Avenue over Lena Gulch?
It is owned by the City or Municipal Highway Agency.