Lower Flat Top DR over I 15
GoodClark County, Nevada · West of Mesquite · Structure no. I3154
- Built
- 2016
- 9 years old
- Condition
- Good
- inspected November 2024
- Type
- Arch - Deck
- Concrete
- Length
- 199 ft
- 2 main spans
- Daily traffic
- 500
- 2017 count
- Owner
- State
- State Highway Agency
About this bridge
Lower Flat Top DR over I 15 is a concrete arch - deck carrying Lower Flat Top DR over I 15 in Clark County, Nevada. It was built in 2016, so it is 9 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 500 vehicles a day, roughly 3% of them trucks, projected to reach 1,450 by 2040. The structure is 199 ft (60.7 m) long and 75 ft wide. If it were closed, the detour would be 0.6 mi (1 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 |
|---|---|---|
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Lower Flat Top DR over I 15 built?
It was built in 2016, making it 9 years old in 2025.
What condition is Lower Flat Top DR over I 15 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 November 2024.
How much traffic does Lower Flat Top DR over I 15 carry?
About 500 vehicles per day (2017 count), of which roughly 3% are trucks.
How long is Lower Flat Top DR over I 15?
The structure is 199 ft (60.7 m) long with a longest span of 79 ft (24.1 m) and a deck 75 ft wide.
Who owns Lower Flat Top DR over I 15?
It is owned by the State Highway Agency.