US Bridges

SR604/LAS Vegas Bl over Dry Wash

Fair

Clark County, Nevada · Northeast of Las Vegas · Structure no. B 590

Built
1957
68 years old
Condition
Fair
inspected December 2022
Type
Culvert
Concrete
Length
81 ft
6 main spans
Daily traffic
6,950
2017 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 1957, so it is 68 years old, older than the Nevada average of 36.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 6,950 vehicles a day, roughly 3% of them trucks, projected to reach 14,373 by 2040. The structure is 81 ft (24.7 m) long. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesSR604/LAS Vegas Bl
CrossesDry Wash
LocationNortheast of Las Vegas
RouteState Highway 604
CountyClark County
StateNevada
Coordinates36.23198, -115.06891
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2022
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47.8 US tons
Inventory rating28.8 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans6
Design loadHS 20
Structure length81 ft (24.7 m)
Longest span13 ft (4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,950 (2017)
Projected traffic14,373 by 2040
Trucks3%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.2 million
NavigationNo navigation control on waterway

Frequently asked questions

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

It was built in 1957, making it 68 years old in 2025.

What condition is SR604/LAS Vegas Bl over Dry Wash in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in December 2022.

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

About 6,950 vehicles per day (2017 count), of which roughly 3% are trucks.

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

The structure is 81 ft (24.7 m) long with a longest span of 13 ft (4 m).

Who owns SR604/LAS Vegas Bl over Dry Wash?

It is owned by the State Highway Agency.