US Bridges

Interstate 605 over Slauson Ave

Fair

Los Angeles County, California · 07-LA-605-R11.54-SFSP · Structure no. 53 1665

Built
1965
60 years old
Condition
Fair
inspected September 2023
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
199 ft
3 main spans
Daily traffic
264,000
2021 count
Owner
State
State Highway Agency

About this bridge

Interstate 605 over Slauson Ave is a concrete continuous box beam or girders - multiple carrying Interstate 605 over Slauson Ave in Los Angeles County, California. It was built in 1965, so it is 60 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 264,000 vehicles a day, roughly 11% of them trucks, projected to reach 268,410 by 2042. The structure is 199 ft (60.7 m) long and 165 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesInterstate 605
CrossesSlauson Ave
Location07-LA-605-R11.54-SFSP
RouteInterstate 605
CountyLos Angeles County
StateCalifornia
Coordinates33.96695, -118.08321
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99.6 US tons
Inventory rating60 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length199 ft (60.7 m)
Longest span107 ft (32.6 m)
Deck width165 ft (50.4 m)
Roadway width159 ft (48.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic264,000 (2021)
Projected traffic268,410 by 2042
Trucks11%
Lanes on structure11
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Interstate 605 over Slauson Ave built?

It was built in 1965, making it 60 years old in 2025.

What condition is Interstate 605 over Slauson Ave 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 September 2023.

How much traffic does Interstate 605 over Slauson Ave carry?

About 264,000 vehicles per day (2021 count), of which roughly 11% are trucks.

How long is Interstate 605 over Slauson Ave?

The structure is 199 ft (60.7 m) long with a longest span of 107 ft (32.6 m) and a deck 165 ft wide.

Who owns Interstate 605 over Slauson Ave?

It is owned by the State Highway Agency.