US Bridges

Parthenia ST over Browns Canyon Wash

Fair

Los Angeles County, California · 0.48 KM E/O Canoga Ave · Structure no. 53C1275

Built
1972
53 years old
Condition
Fair
inspected October 2022
Type
Culvert
Concrete Continuous
Length
73 ft
2 main spans
Daily traffic
8,727
2015 count
Owner
City
City or Municipal Highway Agency

About this bridge

Parthenia ST over Browns Canyon Wash is a concrete continuous culvert carrying Parthenia ST over Browns Canyon Wash in Los Angeles County, California. It was built in 1972, so it is 53 years old, younger 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 8,727 vehicles a day, roughly 1% of them trucks, projected to reach 10,373 by 2042. The structure is 73 ft (22.2 m) long and 86 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesParthenia ST
CrossesBrowns Canyon Wash
Location0.48 KM E/O Canoga Ave
RouteCity Street 0
CountyLos Angeles County
StateCalifornia
Coordinates34.22809, -118.59332
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 inspectionOctober 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110 US tons
Inventory rating110 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadUnknown
Structure length73 ft (22.2 m)
Longest span34 ft (10.4 m)
Deck width86 ft (26.2 m)
Roadway width66 ft (20.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,727 (2015)
Projected traffic10,373 by 2042
Trucks1%
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

OwnerCity or Municipal 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 Parthenia ST over Browns Canyon Wash built?

It was built in 1972, making it 53 years old in 2025.

What condition is Parthenia ST over Browns Canyon Wash 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 October 2022.

How much traffic does Parthenia ST over Browns Canyon Wash carry?

About 8,727 vehicles per day (2015 count), of which roughly 1% are trucks.

How long is Parthenia ST over Browns Canyon Wash?

The structure is 73 ft (22.2 m) long with a longest span of 34 ft (10.4 m) and a deck 86 ft wide.

Who owns Parthenia ST over Browns Canyon Wash?

It is owned by the City or Municipal Highway Agency.