US Bridges

I-15 over Starr Ave.

Good

Clark County, Nevada · I-15 Between Cactus & Sai · Structure no. I2994

Built
2019
6 years old
Condition
Good
inspected October 2023
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete
Length
202 ft
1 main span
Daily traffic
76,000
2021 count
Owner
State
State Highway Agency

About this bridge

I-15 over Starr Ave. is a prestressed concrete box beam or girders - single or spread carrying I-15 over Starr Ave. in Clark County, Nevada. It was built in 2019, so it is 6 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 76,000 vehicles a day, roughly 14% of them trucks, projected to reach 80,850 by 2039. The structure is 202 ft (61.6 m) long and 180 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesI-15
CrossesStarr Ave.
LocationI-15 Between Cactus & Sai
RouteInterstate 15
CountyClark County
StateNevada
Coordinates35.98459, -115.18121
Functional classUrban Principal Arterial - Interstate

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 inspectionOctober 2023
Inspection intervalevery 24 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 alignment9: Superior to present desirable criteria
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length202 ft (61.6 m)
Longest span197 ft (60 m)
Deck width180 ft (54.9 m)
Roadway width176 ft (53.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic76,000 (2021)
Projected traffic80,850 by 2039
Trucks14%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 I-15 over Starr Ave. built?

It was built in 2019, making it 6 years old in 2025.

What condition is I-15 over Starr Ave. 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 October 2023.

How much traffic does I-15 over Starr Ave. carry?

About 76,000 vehicles per day (2021 count), of which roughly 14% are trucks.

How long is I-15 over Starr Ave.?

The structure is 202 ft (61.6 m) long with a longest span of 197 ft (60 m) and a deck 180 ft wide.

Who owns I-15 over Starr Ave.?

It is owned by the State Highway Agency.