US Bridges

Old US 40 over SPRR

FairPosted for load

Humboldt County, Nevada · Southwest of Winnemucca · Structure no. G 387

Built
1939
86 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
216 ft
4 main spans
Daily traffic
122
2017 count
Owner
State
State Highway Agency

About this bridge

Old US 40 over SPRR is a steel continuous stringer/multi-beam or girder carrying Old US 40 over SPRR in Humboldt County, Nevada. It was built in 1939, so it is 86 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 122 vehicles a day, projected to reach 135 by 2040. The structure is 216 ft (65.8 m) long and 34 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesOld US 40
CrossesSPRR
LocationSouthwest of Winnemucca
CountyHumboldt County
StateNevada
Coordinates40.89025, -117.90367
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating22.3 US tons
Inventory rating17.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHL 93
Structure length216 ft (65.8 m)
Longest span56 ft (17.1 m)
Deck width34 ft (10.4 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic122 (2017)
Projected traffic135 by 2040
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusEligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$949,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was Old US 40 over SPRR built?

It was built in 1939, making it 86 years old in 2025.

What condition is Old US 40 over SPRR 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 August 2024.

How much traffic does Old US 40 over SPRR carry?

About 122 vehicles per day (2017 count).

How long is Old US 40 over SPRR?

The structure is 216 ft (65.8 m) long with a longest span of 56 ft (17.1 m) and a deck 34 ft wide.

Who owns Old US 40 over SPRR?

It is owned by the State Highway Agency.