US Bridges

State Street over RTE 10 & Conn

Fair

Los Angeles County, California · 07-LA-010-18.59-LA · Structure no. 53 1328

Built
1959
66 years old
Condition
Fair
inspected May 2024
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
657 ft
8 main spans
Daily traffic
20,000
2018 count
Owner
State
State Highway Agency

About this bridge

State Street over RTE 10 & Conn is a concrete continuous box beam or girders - multiple carrying State Street over RTE 10 & Conn 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 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 20,000 vehicles a day, roughly 1% of them trucks, projected to reach 23,162 by 2041. The structure is 657 ft (200.2 m) long and 56 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesState Street
CrossesRTE 10 & Conn
Location07-LA-010-18.59-LA
RouteCity Street 0
Coordinates34.05416, -118.21247
Functional classUrban Minor 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.
Last inspectionMay 2024
Inspection intervalevery 24 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 alignment6: Equal to present minimum criteria
Operating rating83.9 US tons
Inventory rating51.9 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans8 (+4 approach)
Design loadHS 20
Structure length657 ft (200.2 m)
Longest span73 ft (22.1 m)
Deck width56 ft (17.1 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20,000 (2018)
Projected traffic23,162 by 2041
Trucks1%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

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 Street over RTE 10 & Conn built?

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

What condition is State Street over RTE 10 & Conn 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 May 2024.

How much traffic does State Street over RTE 10 & Conn carry?

About 20,000 vehicles per day (2018 count), of which roughly 1% are trucks.

How long is State Street over RTE 10 & Conn?

The structure is 657 ft (200.2 m) long with a longest span of 73 ft (22.1 m) and a deck 56 ft wide.

Who owns State Street over RTE 10 & Conn?

It is owned by the State Highway Agency.