US Bridges

SR 170 Bunkervl RD over Dry Wash

Fair

Clark County, Nevada · West of Bunkerville · Structure no. B 87

Built
1932
93 years old
Condition
Fair
inspected November 2024
Type
Culvert
Concrete
Length
21 ft
2 main spans
Daily traffic
240
2021 count
Owner
State
State Highway Agency

About this bridge

SR 170 Bunkervl RD over Dry Wash is a concrete culvert carrying SR 170 Bunkervl RD over Dry Wash in Clark County, Nevada. It was built in 1932, so it is 93 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 240 vehicles a day, roughly 7% of them trucks, projected to reach 300 by 2040. The structure is 21 ft (6.4 m) long. If it were closed, the detour would be 14.9 mi (24 km).

Location

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CarriesSR 170 Bunkervl RD
CrossesDry Wash
LocationWest of Bunkerville
RouteState Highway 170
CountyClark County
StateNevada
Coordinates36.76271, -114.14081
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
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 rating53.6 US tons
Inventory rating32.1 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length21 ft (6.4 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic240 (2021)
Projected traffic300 by 2040
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.9 mi (24 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 170 Bunkervl RD over Dry Wash built?

It was built in 1932, making it 93 years old in 2025.

What condition is SR 170 Bunkervl RD 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 November 2024.

How much traffic does SR 170 Bunkervl RD over Dry Wash carry?

About 240 vehicles per day (2021 count), of which roughly 7% are trucks.

How long is SR 170 Bunkervl RD over Dry Wash?

The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m).

Who owns SR 170 Bunkervl RD over Dry Wash?

It is owned by the State Highway Agency.