US Bridges

South Shore DR over Lakeview Canyon

Fair

Nevada County, California · Near Larch ST · Structure no. 17C0075

Built
1966
59 years old
Condition
Fair
inspected August 2024
Type
Slab
Concrete
Length
40 ft
1 main span
Daily traffic
800
2010 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

South Shore DR over Lakeview Canyon is a concrete slab carrying South Shore DR over Lakeview Canyon in Nevada County, California. It was built in 1966, so it is 59 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 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 800 vehicles a day, roughly 10% of them trucks, projected to reach 943 by 2046. The structure is 40 ft (12.1 m) long and 37 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesSouth Shore DR
CrossesLakeview Canyon
LocationNear Larch ST
RouteCounty Highway 0
Coordinates39.31675, -120.28542
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2024
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 adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating110 US tons
Inventory rating71.4 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length40 ft (12.1 m)
Longest span38 ft (11.6 m)
Deck width37 ft (11.2 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic800 (2010)
Projected traffic943 by 2046
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was South Shore DR over Lakeview Canyon built?

It was built in 1966, making it 59 years old in 2025.

What condition is South Shore DR over Lakeview Canyon 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 South Shore DR over Lakeview Canyon carry?

About 800 vehicles per day (2010 count), of which roughly 10% are trucks.

How long is South Shore DR over Lakeview Canyon?

The structure is 40 ft (12.1 m) long with a longest span of 38 ft (11.6 m) and a deck 37 ft wide.

Who owns South Shore DR over Lakeview Canyon?

It is owned by the Town or Township Highway Agency.