US Bridges

SR278 Eureka-Carli over Slough

Good

Eureka County, Nevada · 4.33 MI N of US50 · Structure no. B3265

Built
2020
5 years old
Condition
Good
inspected August 2023
Type
Culvert
Concrete
Length
22 ft
2 main spans
Daily traffic
770
2021 count
Owner
State
State Highway Agency

About this bridge

SR278 Eureka-Carli over Slough is a concrete culvert carrying SR278 Eureka-Carli over Slough in Eureka County, Nevada. It was built in 2020, so it is 5 years old, younger 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 770 vehicles a day, roughly 8% of them trucks, projected to reach 737 by 2039. The structure is 22 ft (6.7 m) long and 28 ft wide. If it were closed, the detour would be 31.1 mi (50 km).

CarriesSR278 Eureka-Carli
CrossesSlough
Location4.33 MI N of US50
RouteState Highway 278
StateNevada
Coordinates39.61299, -116.01627
Functional classRural Major Collector

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert8 Very GoodNo problems noted.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHL 93
Structure length22 ft (6.7 m)
Longest span10 ft (3 m)
Deck width28 ft (8.4 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic770 (2021)
Projected traffic737 by 2039
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed31.1 mi (50 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 SR278 Eureka-Carli over Slough built?

It was built in 2020, making it 5 years old in 2025.

What condition is SR278 Eureka-Carli over 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 August 2023.

How much traffic does SR278 Eureka-Carli over Slough carry?

About 770 vehicles per day (2021 count), of which roughly 8% are trucks.

How long is SR278 Eureka-Carli over Slough?

The structure is 22 ft (6.7 m) long with a longest span of 10 ft (3 m) and a deck 28 ft wide.

Who owns SR278 Eureka-Carli over Slough?

It is owned by the State Highway Agency.