US Bridges

CD-S/CH3A over Alta

Good

Clark County, Nevada · Neon · Structure no. H3059

Built
2017
8 years old
Condition
Good
inspected December 2020
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
134 ft
1 main span
Daily traffic
7,200
2021 count
Owner
State
State Highway Agency

About this bridge

CD-S/CH3A over Alta is a prestressed concrete stringer/multi-beam or girder carrying CD-S/CH3A over Alta 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 7,200 vehicles a day, projected to reach 29,367 by 2040. The structure is 134 ft (40.8 m) long and 64 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

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CarriesCD-S/CH3A
CrossesAlta
LocationNeon
RouteCity Street 0
CountyClark County
StateNevada
Coordinates36.16623, -115.16071
Functional classUrban Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionDecember 2020
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47.1 US tons
Inventory rating38.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length134 ft (40.8 m)
Longest span134 ft (40.8 m)
Deck width64 ft (19.5 m)
Roadway width61 ft (18.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,200 (2021)
Projected traffic29,367 by 2040
Trucks—
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was CD-S/CH3A over Alta built?

It was built in 2017, making it 8 years old in 2025.

What condition is CD-S/CH3A over Alta 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 CD-S/CH3A over Alta carry?

About 7,200 vehicles per day (2021 count).

How long is CD-S/CH3A over Alta?

The structure is 134 ft (40.8 m) long with a longest span of 134 ft (40.8 m) and a deck 64 ft wide.

Who owns CD-S/CH3A over Alta?

It is owned by the State Highway Agency.