US Bridges

State ST On-R Oc over Conn NB 5 to EB 10

Good

Los Angeles County, California · 07-LA-005-18.37-LA · Structure no. 53 1325S

Built
1959
66 years old
Condition
Good
inspected March 2023
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
168 ft
3 main spans
Daily traffic
4,590
2020 count
Owner
State
State Highway Agency

About this bridge

State ST On-R Oc over Conn NB 5 to EB 10 is a concrete continuous box beam or girders - multiple carrying State ST On-R Oc over Conn NB 5 to EB 10 in Los Angeles County, California. It was built in 1959, so it is 66 years old, older than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 4,590 vehicles a day, roughly 2% of them trucks, projected to reach 9,143 by 2042. The structure is 168 ft (51.2 m) long and 32 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesState ST On-R Oc
CrossesConn NB 5 to EB 10
Location07-LA-005-18.37-LA
RouteInterstate 5
CountyLos Angeles County
StateCalifornia
Coordinates34.05328, -118.21347
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.5 US tons
Inventory rating44.3 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length168 ft (51.2 m)
Longest span79 ft (24.1 m)
Deck width32 ft (9.9 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,590 (2020)
Projected traffic9,143 by 2042
Trucks2%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkNon-Interstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 State ST On-R Oc over Conn NB 5 to EB 10 built?

It was built in 1959, making it 66 years old in 2025.

What condition is State ST On-R Oc over Conn NB 5 to EB 10 in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in March 2023.

How much traffic does State ST On-R Oc over Conn NB 5 to EB 10 carry?

About 4,590 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is State ST On-R Oc over Conn NB 5 to EB 10?

The structure is 168 ft (51.2 m) long with a longest span of 79 ft (24.1 m) and a deck 32 ft wide.

Who owns State ST On-R Oc over Conn NB 5 to EB 10?

It is owned by the State Highway Agency.