US Bridges

S405-N710 Conn over Santa Fe Ave

Fair

Los Angeles County, California · 07-LA-405-8.06-LBCH · Structure no. 53 1212F

Built
1961
64 years old
Condition
Fair
inspected September 2024
Type
Tee Beam
Concrete Continuous
Length
202 ft
4 main spans
Daily traffic
26,200
2019 count
Owner
State
State Highway Agency

About this bridge

S405-N710 Conn over Santa Fe Ave is a concrete continuous tee beam carrying S405-N710 Conn over Santa Fe Ave in Los Angeles County, California. It was built in 1961, so it is 64 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 26,200 vehicles a day, roughly 10% of them trucks, projected to reach 31,500 by 2046. The structure is 202 ft (61.6 m) long and 50 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesS405-N710 Conn
CrossesSanta Fe Ave
Location07-LA-405-8.06-LBCH
RouteInterstate 405
CountyLos Angeles County
StateCalifornia
Coordinates33.82519, -118.21529
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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating41.4 US tons
Inventory rating31.7 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length202 ft (61.6 m)
Longest span60 ft (18.3 m)
Deck width50 ft (15.3 m)
Roadway width46 ft (14 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic26,200 (2019)
Projected traffic31,500 by 2046
Trucks10%
Lanes on structure3
Traffic directionOne-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 S405-N710 Conn over Santa Fe Ave built?

It was built in 1961, making it 64 years old in 2025.

What condition is S405-N710 Conn over Santa Fe 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 2024.

How much traffic does S405-N710 Conn over Santa Fe Ave carry?

About 26,200 vehicles per day (2019 count), of which roughly 10% are trucks.

How long is S405-N710 Conn over Santa Fe Ave?

The structure is 202 ft (61.6 m) long with a longest span of 60 ft (18.3 m) and a deck 50 ft wide.

Who owns S405-N710 Conn over Santa Fe Ave?

It is owned by the State Highway Agency.