I11 over Drainage
GoodClark County, Nevada · Boulder City · Structure no. B3165
- Built
- 2017
- 8 years old
- Condition
- Good
- inspected March 2024
- Type
- Culvert
- Concrete
- Length
- 51 ft
- 4 main spans
- Daily traffic
- 17,100
- 2021 count
- Owner
- State
- State Highway Agency
About this bridge
I11 over Drainage is a concrete culvert carrying I11 over Drainage in Clark County, Nevada. It was built in 2017, so it is 8 years old, younger than the Nevada average of 36.4 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 17,100 vehicles a day, projected to reach 50,400 by 2037. The structure is 51 ft (15.5 m) long. 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 | 7 Good | Some minor problems. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I11 over Drainage built?
It was built in 2017, making it 8 years old in 2025.
What condition is I11 over Drainage 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 March 2024.
How much traffic does I11 over Drainage carry?
About 17,100 vehicles per day (2021 count).
How long is I11 over Drainage?
The structure is 51 ft (15.5 m) long with a longest span of 12 ft (3.7 m).
Who owns I11 over Drainage?
It is owned by the State Highway Agency.