US Bridges

US 95 over Quinn Rvr

Fair

Humboldt County, Nevada · Near Mcdermitt · Structure no. B 226

Built
1934
91 years old, rebuilt 1963
Condition
Fair
inspected July 2023
Type
Culvert
Concrete
Length
30 ft
2 main spans
Daily traffic
2,400
2017 count
Owner
State
State Highway Agency

About this bridge

US 95 over Quinn Rvr is a concrete culvert carrying US 95 over Quinn Rvr in Humboldt County, Nevada. It was built in 1934 and reconstructed in 1963, so it is 91 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 2,400 vehicles a day, roughly 26% of them trucks, projected to reach 2,500 by 2040. The structure is 30 ft (9.1 m) long and 37 ft wide. If it were closed, the detour would be 77.1 mi (124 km).

Location

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CarriesUS 95
CrossesQuinn Rvr
LocationNear Mcdermitt
RouteU.S. Route 95
CountyHumboldt County
StateNevada
Coordinates41.95203, -117.70857
Functional classRural Principal Arterial - Other

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 inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54.3 US tons
Inventory rating32.5 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length30 ft (9.1 m)
Longest span13 ft (4 m)
Deck width37 ft (11.2 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,400 (2017)
Projected traffic2,500 by 2040
Trucks26%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed77.1 mi (124 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkNon-Interstate STRAHNET route

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$217,000
NavigationNo navigation control on waterway

Frequently asked questions

When was US 95 over Quinn Rvr built?

It was built in 1934, making it 91 years old in 2025. It was reconstructed in 1963.

What condition is US 95 over Quinn Rvr 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 July 2023.

How much traffic does US 95 over Quinn Rvr carry?

About 2,400 vehicles per day (2017 count), of which roughly 26% are trucks.

How long is US 95 over Quinn Rvr?

The structure is 30 ft (9.1 m) long with a longest span of 13 ft (4 m) and a deck 37 ft wide.

Who owns US 95 over Quinn Rvr?

It is owned by the State Highway Agency.