US Bridges

SR604/LAS Vegas Bl over Dry Wash

Good

Clark County, Nevada · South of Las Vegas · Structure no. B 504

Built
1948
77 years old
Condition
Good
inspected December 2022
Type
Culvert
Concrete
Length
23 ft
2 main spans
Daily traffic
25,400
2021 count
Owner
State
State Highway Agency

About this bridge

SR604/LAS Vegas Bl over Dry Wash is a concrete culvert carrying SR604/LAS Vegas Bl over Dry Wash in Clark County, Nevada. It was built in 1948, so it is 77 years old, older 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 25,400 vehicles a day, roughly 4% of them trucks, projected to reach 43,430 by 2040. The structure is 23 ft (7 m) long and 107 ft wide. If it were closed, the detour would be 5.6 mi (9 km).

Location

Open in Google Maps
CarriesSR604/LAS Vegas Bl
CrossesDry Wash
LocationSouth of Las Vegas
RouteState Highway 142
CountyClark County
StateNevada
Coordinates36.02166, -115.17232
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
Channel and channel protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionDecember 2022
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43 US tons
Inventory rating25.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length23 ft (7 m)
Longest span10 ft (3 m)
Deck width107 ft (32.6 m)
Roadway width100 ft (30.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25,400 (2021)
Projected traffic43,430 by 2040
Trucks4%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed5.6 mi (9 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was SR604/LAS Vegas Bl over Dry Wash built?

It was built in 1948, making it 77 years old in 2025.

What condition is SR604/LAS Vegas Bl over Dry Wash 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 2022.

How much traffic does SR604/LAS Vegas Bl over Dry Wash carry?

About 25,400 vehicles per day (2021 count), of which roughly 4% are trucks.

How long is SR604/LAS Vegas Bl over Dry Wash?

The structure is 23 ft (7 m) long with a longest span of 10 ft (3 m) and a deck 107 ft wide.

Who owns SR604/LAS Vegas Bl over Dry Wash?

It is owned by the State Highway Agency.