US Bridges

Sierra HWY Sbnd over Santa Clara Riv

Fair

Los Angeles County, California · 0.3MI S/O Soledad Cyn RD · Structure no. 53C1777L

Built
1938
87 years old
Condition
Fair
inspected January 2024
Type
Tee Beam
Concrete Continuous
Length
427 ft
8 main spans
Daily traffic
17,640
2014 count
Owner
City
City or Municipal Highway Agency

About this bridge

Sierra HWY Sbnd over Santa Clara Riv is a concrete continuous tee beam carrying Sierra HWY Sbnd over Santa Clara Riv in Los Angeles County, California. It was built in 1938, so it is 87 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 17,640 vehicles a day, roughly 4% of them trucks, projected to reach 18,000 by 2044. The structure is 427 ft (130.1 m) long and 43 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesSierra HWY Sbnd
CrossesSanta Clara Riv
Location0.3MI S/O Soledad Cyn RD
RouteCity Street 0L639
CountyLos Angeles County
StateCalifornia
Coordinates34.41225, -118.45773
Functional classUrban Other Principal Arterial

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating21.4 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans8
Design loadUnknown
Structure length427 ft (130.1 m)
Longest span50 ft (15.2 m)
Deck width43 ft (13 m)
Roadway width37 ft (11.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic17,640 (2014)
Projected traffic18,000 by 2044
Trucks4%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

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 Sierra HWY Sbnd over Santa Clara Riv built?

It was built in 1938, making it 87 years old in 2025.

What condition is Sierra HWY Sbnd over Santa Clara Riv 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 January 2024.

How much traffic does Sierra HWY Sbnd over Santa Clara Riv carry?

About 17,640 vehicles per day (2014 count), of which roughly 4% are trucks.

How long is Sierra HWY Sbnd over Santa Clara Riv?

The structure is 427 ft (130.1 m) long with a longest span of 50 ft (15.2 m) and a deck 43 ft wide.

Who owns Sierra HWY Sbnd over Santa Clara Riv?

It is owned by the City or Municipal Highway Agency.