US Bridges

Sierra HWY Nbnd over Santa Clara Riv

Fair

Los Angeles County, California · 0.3MI S/O Soledad Cyn RD · Structure no. 53C1777R

Built
1968
57 years old
Condition
Fair
inspected February 2024
Type
Tee Beam
Concrete Continuous
Length
405 ft
8 main spans
Daily traffic
18,044
2014 count
Owner
County
County Highway Agency

About this bridge

Sierra HWY Nbnd over Santa Clara Riv is a concrete continuous tee beam carrying Sierra HWY Nbnd over Santa Clara Riv in Los Angeles County, California. It was built in 1968, so it is 57 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 18,044 vehicles a day, roughly 4% of them trucks, projected to reach 21,700 by 2044. The structure is 405 ft (123.4 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 Nbnd
CrossesSanta Clara Riv
Location0.3MI S/O Soledad Cyn RD
RouteCounty Highway 0
CountyLos Angeles County
StateCalifornia
Coordinates34.41231, -118.45751
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
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 rating45.7 US tons
Inventory rating27.4 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans8
Design loadHS 20 + Mod
Structure length405 ft (123.4 m)
Longest span51 ft (15.5 m)
Deck width43 ft (13.1 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18,044 (2014)
Projected traffic21,700 by 2044
Trucks4%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

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 Sierra HWY Nbnd over Santa Clara Riv built?

It was built in 1968, making it 57 years old in 2025.

What condition is Sierra HWY Nbnd 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 February 2024.

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

About 18,044 vehicles per day (2014 count), of which roughly 4% are trucks.

How long is Sierra HWY Nbnd over Santa Clara Riv?

The structure is 405 ft (123.4 m) long with a longest span of 51 ft (15.5 m) and a deck 43 ft wide.

Who owns Sierra HWY Nbnd over Santa Clara Riv?

It is owned by the County Highway Agency.