US Bridges

Interstate 605 over San Jose Diversion Chan

Fair

Los Angeles County, California · 07-LA-605-R17.69-IDY · Structure no. 53 1416

Built
1964
61 years old
Condition
Fair
inspected March 2024
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
237 ft
3 main spans
Daily traffic
212,000
2022 count
Owner
State
State Highway Agency

About this bridge

Interstate 605 over San Jose Diversion Chan is a concrete continuous box beam or girders - multiple carrying Interstate 605 over San Jose Diversion Chan in Los Angeles County, California. It was built in 1964, so it is 61 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 212,000 vehicles a day, roughly 10% of them trucks, projected to reach 206,213 by 2045. The structure is 237 ft (72.1 m) long and 144 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesInterstate 605
CrossesSan Jose Diversion Chan
Location07-LA-605-R17.69-IDY
RouteInterstate 605
Coordinates34.03672, -118.02337
Functional classUrban Principal Arterial - Interstate

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 inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating51.5 US tons
Inventory rating39.7 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length237 ft (72.1 m)
Longest span90 ft (27.4 m)
Deck width144 ft (44 m)
Roadway width139 ft (42.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic212,000 (2022)
Projected traffic206,213 by 2045
Trucks10%
Lanes on structure10
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Interstate 605 over San Jose Diversion Chan built?

It was built in 1964, making it 61 years old in 2025.

What condition is Interstate 605 over San Jose Diversion Chan 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 March 2024.

How much traffic does Interstate 605 over San Jose Diversion Chan carry?

About 212,000 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is Interstate 605 over San Jose Diversion Chan?

The structure is 237 ft (72.1 m) long with a longest span of 90 ft (27.4 m) and a deck 144 ft wide.

Who owns Interstate 605 over San Jose Diversion Chan?

It is owned by the State Highway Agency.