US Bridges

Bridge ST over Humboldt Rvr Ovrflow

Fair

Humboldt County, Nevada · Winnemucca · Structure no. B1479

Built
1975
50 years old
Condition
Fair
inspected July 2021
Type
Culvert
Concrete
Length
43 ft
4 main spans
Daily traffic
600
2017 count
Owner
City
City or Municipal Highway Agency

About this bridge

Bridge ST over Humboldt Rvr Ovrflow is a concrete culvert carrying Bridge ST over Humboldt Rvr Ovrflow in Humboldt County, Nevada. It was built in 1975, so it is 50 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 600 vehicles a day, roughly 5% of them trucks, projected to reach 663 by 2040. The structure is 43 ft (13 m) long and 35 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesBridge ST
CrossesHumboldt Rvr Ovrflow
LocationWinnemucca
RouteCounty Highway 0
CountyHumboldt County
StateNevada
Coordinates40.97597, -117.73821
Functional classUrban 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 inspectionJuly 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating85.8 US tons
Inventory rating51.4 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length43 ft (13 m)
Longest span10 ft (3 m)
Deck width35 ft (10.7 m)
Roadway width33 ft (10.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic600 (2017)
Projected traffic663 by 2040
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Bridge ST over Humboldt Rvr Ovrflow built?

It was built in 1975, making it 50 years old in 2025.

What condition is Bridge ST over Humboldt Rvr Ovrflow 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 2021.

How much traffic does Bridge ST over Humboldt Rvr Ovrflow carry?

About 600 vehicles per day (2017 count), of which roughly 5% are trucks.

How long is Bridge ST over Humboldt Rvr Ovrflow?

The structure is 43 ft (13 m) long with a longest span of 10 ft (3 m) and a deck 35 ft wide.

Who owns Bridge ST over Humboldt Rvr Ovrflow?

It is owned by the City or Municipal Highway Agency.