US Bridges

SR 159/CHARLESTON over Dry Wash

Fair

Clark County, Nevada · Near Blue Diamond · Structure no. B1775

Built
1985
40 years old
Condition
Fair
inspected October 2024
Type
Culvert
Concrete
Length
76 ft
7 main spans
Daily traffic
3,400
2017 count
Owner
State
State Highway Agency

About this bridge

SR 159/CHARLESTON over Dry Wash is a concrete culvert carrying SR 159/CHARLESTON over Dry Wash in Clark County, Nevada. It was built in 1985, so it is 40 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 3,400 vehicles a day, roughly 3% of them trucks, projected to reach 4,000 by 2040. The structure is 76 ft (23.3 m) long. If it were closed, the detour would be 27.3 mi (44 km).

Location

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CarriesSR 159/CHARLESTON
CrossesDry Wash
LocationNear Blue Diamond
RouteState Highway 159
CountyClark County
StateNevada
Coordinates36.04004, -115.37059
Functional classRural Major Collector

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 48 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 rating110.1 US tons
Inventory rating60.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans7
Design loadHS 20 + Mod
Structure length76 ft (23.3 m)
Longest span10 ft (3.2 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,400 (2017)
Projected traffic4,000 by 2040
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed27.3 mi (44 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 SR 159/CHARLESTON over Dry Wash built?

It was built in 1985, making it 40 years old in 2025.

What condition is SR 159/CHARLESTON 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 October 2024.

How much traffic does SR 159/CHARLESTON over Dry Wash carry?

About 3,400 vehicles per day (2017 count), of which roughly 3% are trucks.

How long is SR 159/CHARLESTON over Dry Wash?

The structure is 76 ft (23.3 m) long with a longest span of 10 ft (3.2 m).

Who owns SR 159/CHARLESTON over Dry Wash?

It is owned by the State Highway Agency.