US Bridges

Fallbrook Ave over Calabasas Creek

Fair

Los Angeles County, California · 0.35 M N/O Burbank Blvd · Structure no. 53C1161

Built
1961
64 years old
Condition
Fair
inspected August 2023
Type
Culvert
Concrete
Length
48 ft
2 main spans
Daily traffic
33,633
2018 count
Owner
County
County Highway Agency

About this bridge

Fallbrook Ave over Calabasas Creek is a concrete culvert carrying Fallbrook Ave over Calabasas Creek 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 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 33,633 vehicles a day, roughly 2% of them trucks, projected to reach 41,079 by 2044. The structure is 48 ft (14.6 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesFallbrook Ave
CrossesCalabasas Creek
Location0.35 M N/O Burbank Blvd
RouteCity Street 0
CountyLos Angeles County
StateCalifornia
Coordinates34.17614, -118.62319
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length48 ft (14.6 m)
Longest span22 ft (6.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic33,633 (2018)
Projected traffic41,079 by 2044
Trucks2%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCity or Municipal 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 Fallbrook Ave over Calabasas Creek built?

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

What condition is Fallbrook Ave over Calabasas Creek 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 August 2023.

How much traffic does Fallbrook Ave over Calabasas Creek carry?

About 33,633 vehicles per day (2018 count), of which roughly 2% are trucks.

How long is Fallbrook Ave over Calabasas Creek?

The structure is 48 ft (14.6 m) long with a longest span of 22 ft (6.7 m).

Who owns Fallbrook Ave over Calabasas Creek?

It is owned by the County Highway Agency and maintained by the City or Municipal Highway Agency.