US Bridges

Northshore Road over Gypsum Wash

Fair

Clark County, Nevada · Northeast from Henderson · Structure no. 8360005P0000000

Built
1964
61 years old
Condition
Fair
inspected March 2023
Type
Culvert
Concrete Continuous
Length
21 ft
2 main spans
Daily traffic
2,000
2009 count
Owner
Federal
National Park Service

About this bridge

Northshore Road over Gypsum Wash is a concrete continuous culvert carrying Northshore Road over Gypsum Wash in Clark County, Nevada. It was built in 1964, so it is 61 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 2,000 vehicles a day, roughly 20% of them trucks, projected to reach 2,400 by 2029. The structure is 21 ft (6.4 m) long. If it were closed, the detour would be 123.7 mi (199 km).

Location

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CarriesNorthshore Road
CrossesGypsum Wash
LocationNortheast from Henderson
RouteFederal Lands Road 167
CountyClark County
StateNevada
Coordinates36.1449, -114.86483
Functional classRural Minor 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 inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20 + Mod
Structure length21 ft (6.4 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width35 ft (10.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,000 (2009)
Projected traffic2,400 by 2029
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerNational Park Service
Maintained byNational Park Service
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost$63,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Northshore Road over Gypsum Wash built?

It was built in 1964, making it 61 years old in 2025.

What condition is Northshore Road over Gypsum 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 March 2023.

How much traffic does Northshore Road over Gypsum Wash carry?

About 2,000 vehicles per day (2009 count), of which roughly 20% are trucks.

How long is Northshore Road over Gypsum Wash?

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

Who owns Northshore Road over Gypsum Wash?

It is owned by the National Park Service.