US Bridges

SR146 ST Rose Pkwy over I 15

Good

Clark County, Nevada · South of Las Vegas · Structure no. I 663

Built
2008
17 years old
Condition
Good
inspected February 2022
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
335 ft
2 main spans
Daily traffic
33,500
2021 count
Owner
State
State Highway Agency

About this bridge

SR146 ST Rose Pkwy over I 15 is a prestressed concrete continuous box beam or girders - multiple carrying SR146 ST Rose Pkwy over I 15 in Clark County, Nevada. It was built in 2008, so it is 17 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 33,500 vehicles a day, roughly 5% of them trucks, projected to reach 78,588 by 2040. The structure is 335 ft (102.1 m) long and 210 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

CarriesSR146 ST Rose Pkwy
CrossesI 15
LocationSouth of Las Vegas
RouteState Highway 146
StateNevada
Coordinates35.96171, -115.18177
Functional classUrban Other Principal 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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionFebruary 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating94.2 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length335 ft (102.1 m)
Longest span165 ft (50.2 m)
Deck width210 ft (64 m)
Roadway width187 ft (57.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic33,500 (2021)
Projected traffic78,588 by 2040
Trucks5%
Lanes on structure10
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed2.5 mi (4 km)
TollOn a free road
National Highway SystemYes

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 SR146 ST Rose Pkwy over I 15 built?

It was built in 2008, making it 17 years old in 2025.

What condition is SR146 ST Rose Pkwy 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 February 2022.

How much traffic does SR146 ST Rose Pkwy over I 15 carry?

About 33,500 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is SR146 ST Rose Pkwy over I 15?

The structure is 335 ft (102.1 m) long with a longest span of 165 ft (50.2 m) and a deck 210 ft wide.

Who owns SR146 ST Rose Pkwy over I 15?

It is owned by the State Highway Agency.