US Bridges

SR361 Gabbs Vly over Letts Wash

Fair

Nye County, Nevada · South of Gabbs · Structure no. B 438

Built
1942
83 years old
Condition
Fair
inspected September 2023
Type
Culvert
Concrete
Length
25 ft
3 main spans
Daily traffic
370
2021 count
Owner
State
State Highway Agency

About this bridge

SR361 Gabbs Vly over Letts Wash is a concrete culvert carrying SR361 Gabbs Vly over Letts Wash in Nye County, Nevada. It was built in 1942, so it is 83 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 370 vehicles a day, roughly 12% of them trucks, projected to reach 110 by 2040. The structure is 25 ft (7.6 m) long. If it were closed, the detour would be 77.1 mi (124 km).

Location

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CarriesSR361 Gabbs Vly
CrossesLetts Wash
LocationSouth of Gabbs
RouteState Highway 361
CountyNye County
StateNevada
Coordinates38.73856, -118.04474
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 inspectionSeptember 2023
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
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating21.6 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length25 ft (7.6 m)
Longest span6 ft (1.8 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic370 (2021)
Projected traffic110 by 2040
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed77.1 mi (124 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 SR361 Gabbs Vly over Letts Wash built?

It was built in 1942, making it 83 years old in 2025.

What condition is SR361 Gabbs Vly over Letts 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 September 2023.

How much traffic does SR361 Gabbs Vly over Letts Wash carry?

About 370 vehicles per day (2021 count), of which roughly 12% are trucks.

How long is SR361 Gabbs Vly over Letts Wash?

The structure is 25 ft (7.6 m) long with a longest span of 6 ft (1.8 m).

Who owns SR361 Gabbs Vly over Letts Wash?

It is owned by the State Highway Agency.