US Bridges

US 50 over HL4 Drain

Good

Churchill County, Nevada · East of Fallon · Structure no. B 761

Built
1959
66 years old
Condition
Good
inspected January 2023
Type
Culvert
Concrete
Length
24 ft
3 main spans
Daily traffic
1,300
2021 count
Owner
State
State Highway Agency

About this bridge

US 50 over HL4 Drain is a concrete culvert carrying US 50 over HL4 Drain in Churchill County, Nevada. It was built in 1959, so it is 66 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 1,300 vehicles a day, roughly 10% of them trucks, projected to reach 2,000 by 2040. The structure is 24 ft (7.3 m) long. If it were closed, the detour would be 77.1 mi (124 km).

CarriesUS 50
CrossesHL4 Drain
LocationEast of Fallon
RouteU.S. Route 50
StateNevada
Coordinates39.44099, -118.66931
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating58.8 US tons
Inventory rating35.2 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length24 ft (7.3 m)
Longest span7 ft (2.1 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,300 (2021)
Projected traffic2,000 by 2040
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed77.1 mi (124 km)
TollOn a free road
National Highway SystemYes

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$166,000
NavigationNo navigation control on waterway

Frequently asked questions

When was US 50 over HL4 Drain built?

It was built in 1959, making it 66 years old in 2025.

What condition is US 50 over HL4 Drain 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 January 2023.

How much traffic does US 50 over HL4 Drain carry?

About 1,300 vehicles per day (2021 count), of which roughly 10% are trucks.

How long is US 50 over HL4 Drain?

The structure is 24 ft (7.3 m) long with a longest span of 7 ft (2.1 m).

Who owns US 50 over HL4 Drain?

It is owned by the State Highway Agency.