I15N over Alta DR
GoodClark County, Nevada · Neon · Structure no. H3219N
- Built
- 2018
- 7 years old
- Condition
- Good
- inspected December 2020
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 134 ft
- 1 main span
- Daily traffic
- 94,400
- 2021 count
- Owner
- State
- State Highway Agency
About this bridge
I15N over Alta DR is a prestressed concrete stringer/multi-beam or girder carrying I15N over Alta DR in Clark County, Nevada. It was built in 2018, so it is 7 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 94,400 vehicles a day, roughly 5% of them trucks, projected to reach 141,000 by 2037. The structure is 134 ft (40.7 m) long and 118 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 |
|---|---|---|
| Deck | 8 Very Good | No problems noted. |
| 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 I15N over Alta DR built?
It was built in 2018, making it 7 years old in 2025.
What condition is I15N over Alta DR 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 December 2020.
How much traffic does I15N over Alta DR carry?
About 94,400 vehicles per day (2021 count), of which roughly 5% are trucks.
How long is I15N over Alta DR?
The structure is 134 ft (40.7 m) long with a longest span of 134 ft (40.7 m) and a deck 118 ft wide.
Who owns I15N over Alta DR?
It is owned by the State Highway Agency.