US Bridges

Longden Ave over Santa Anita Wash

Poor

Los Angeles County, California · 0.8MI E/O Santa Anita Ave · Structure no. 53C0683

Built
1959
66 years old
Condition
Poor
inspected July 2023
Type
Slab
Concrete
Length
40 ft
1 main span
Daily traffic
6,901
2017 count
Owner
County
County Highway Agency

About this bridge

Longden Ave over Santa Anita Wash is a concrete slab carrying Longden Ave over Santa Anita Wash 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 poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 6,901 vehicles a day, projected to reach 7,936 by 2041. The structure is 40 ft (12.2 m) long and 48 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesLongden Ave
CrossesSanta Anita Wash
Location0.8MI E/O Santa Anita Ave
RouteCounty Highway 0Q497
CountyLos Angeles County
StateCalifornia
Coordinates34.11431, -118.01574
Functional classUrban Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be 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 rating53.9 US tons
Inventory rating41.8 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length40 ft (12.2 m)
Longest span35 ft (10.7 m)
Deck width48 ft (14.6 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,901 (2017)
Projected traffic7,936 by 2041
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$299,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Longden Ave over Santa Anita Wash built?

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

What condition is Longden Ave over Santa Anita Wash in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in July 2023.

How much traffic does Longden Ave over Santa Anita Wash carry?

About 6,901 vehicles per day (2017 count).

How long is Longden Ave over Santa Anita Wash?

The structure is 40 ft (12.2 m) long with a longest span of 35 ft (10.7 m) and a deck 48 ft wide.

Who owns Longden Ave over Santa Anita Wash?

It is owned by the County Highway Agency.