US Bridges

Larson Lane over West Walker River

Fair

Mono County, California · 0.3 MI E RTE 395 Pm 110 · Structure no. 47C0006

Built
1952
73 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
83 ft
1 main span
Daily traffic
104
2019 count
Owner
County
County Highway Agency

About this bridge

Larson Lane over West Walker River is a steel stringer/multi-beam or girder carrying Larson Lane over West Walker River in Mono County, California. It was built in 1952, so it is 73 years old, older than the California average of 54.8 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.

It carries about 104 vehicles a day, roughly 2% of them trucks, projected to reach 189 by 2042. The structure is 83 ft (25.3 m) long and 23 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesLarson Lane
CrossesWest Walker River
Location0.3 MI E RTE 395 Pm 110
RouteCounty Highway 0
CountyMono County
StateCalifornia
Coordinates38.54563, -119.49509
Functional classRural Major 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure8 Very GoodNo problems noted.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47.2 US tons
Inventory rating28.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length83 ft (25.3 m)
Longest span80 ft (24.4 m)
Deck width23 ft (7.1 m)
Roadway width20 ft (6.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic104 (2019)
Projected traffic189 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Larson Lane over West Walker River built?

It was built in 1952, making it 73 years old in 2025.

What condition is Larson Lane over West Walker River 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 September 2024.

How much traffic does Larson Lane over West Walker River carry?

About 104 vehicles per day (2019 count), of which roughly 2% are trucks.

How long is Larson Lane over West Walker River?

The structure is 83 ft (25.3 m) long with a longest span of 80 ft (24.4 m) and a deck 23 ft wide.

Who owns Larson Lane over West Walker River?

It is owned by the County Highway Agency.