US Bridges

Avenue 52 over Arroyo Seco

Fair

Los Angeles County, California · 0.1 MI South of SR 110 · Structure no. 53C0052

Built
1940
85 years old
Condition
Fair
inspected September 2024
Type
Tee Beam
Concrete
Length
62 ft
1 main span
Daily traffic
5,370
2016 count
Owner
City
City or Municipal Highway Agency

About this bridge

Avenue 52 over Arroyo Seco is a concrete tee beam carrying Avenue 52 over Arroyo Seco in Los Angeles County, California. It was built in 1940, so it is 85 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 6 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 5,370 vehicles a day, roughly 1% of them trucks, projected to reach 10,477 by 2042. The structure is 62 ft (19 m) long and 46 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesAvenue 52
CrossesArroyo Seco
Location0.1 MI South of SR 110
RouteCity Street 0
Coordinates34.10253, -118.196
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating37.1 US tons
Inventory rating26.1 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length62 ft (19 m)
Longest span60 ft (18.4 m)
Deck width46 ft (14 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,370 (2016)
Projected traffic10,477 by 2042
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusEligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Avenue 52 over Arroyo Seco built?

It was built in 1940, making it 85 years old in 2025.

What condition is Avenue 52 over Arroyo Seco 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 Avenue 52 over Arroyo Seco carry?

About 5,370 vehicles per day (2016 count), of which roughly 1% are trucks.

How long is Avenue 52 over Arroyo Seco?

The structure is 62 ft (19 m) long with a longest span of 60 ft (18.4 m) and a deck 46 ft wide.

Who owns Avenue 52 over Arroyo Seco?

It is owned by the City or Municipal Highway Agency.