US Bridges

US 95 over Humboldt Slough

Good

Churchill County, Nevada · North of Fallon · Structure no. B 678

Built
1958
67 years old
Condition
Good
inspected May 2023
Type
Culvert
Concrete
Length
51 ft
3 main spans
Daily traffic
1,200
2021 count
Owner
State
State Highway Agency

About this bridge

US 95 over Humboldt Slough is a concrete culvert carrying US 95 over Humboldt Slough in Churchill County, Nevada. It was built in 1958, so it is 67 years old, older than the Nevada average of 36.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,200 vehicles a day, roughly 18% of them trucks, projected to reach 1,000 by 2040. The structure is 51 ft (15.5 m) long and 48 ft wide. If it were closed, the detour would be 77.1 mi (124 km).

CarriesUS 95
CrossesHumboldt Slough
LocationNorth of Fallon
RouteU.S. Route 95
StateNevada
Coordinates39.83299, -118.77509
Functional classRural Principal Arterial - Other

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating72.1 US tons
Inventory rating43.2 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length51 ft (15.5 m)
Longest span16 ft (4.9 m)
Deck width48 ft (14.7 m)
Roadway width46 ft (14.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,200 (2021)
Projected traffic1,000 by 2040
Trucks18%
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was US 95 over Humboldt Slough built?

It was built in 1958, making it 67 years old in 2025.

What condition is US 95 over Humboldt Slough in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in May 2023.

How much traffic does US 95 over Humboldt Slough carry?

About 1,200 vehicles per day (2021 count), of which roughly 18% are trucks.

How long is US 95 over Humboldt Slough?

The structure is 51 ft (15.5 m) long with a longest span of 16 ft (4.9 m) and a deck 48 ft wide.

Who owns US 95 over Humboldt Slough?

It is owned by the State Highway Agency.