US Bridges

State Route 57 over Brea Canyon Channel

Good

Los Angeles County, California · 07-LA-057-R0.72 · Structure no. 53 2348

Built
1972
53 years old
Condition
Good
inspected August 2024
Type
Culvert
Steel
Length
20 ft
1 main span
Daily traffic
203,000
2017 count
Owner
State
State Highway Agency

About this bridge

State Route 57 over Brea Canyon Channel is a steel culvert carrying State Route 57 over Brea Canyon Channel 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 203,000 vehicles a day, roughly 8% of them trucks, projected to reach 244,193 by 2042. The structure is 20 ft (6.1 m) long. If it were closed, the detour would be 1.9 mi (3 km).

CarriesState Route 57
CrossesBrea Canyon Channel
Location07-LA-057-R0.72
RouteState Highway 57
Coordinates33.95517, -117.86174
Functional classRural Principal Arterial - Other

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans1
Design loadUnknown
Structure length20 ft (6.1 m)
Longest span20 ft (6.1 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic203,000 (2017)
Projected traffic244,193 by 2042
Trucks8%
Lanes on structure8
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

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—
NavigationNo navigation control on waterway

Frequently asked questions

When was State Route 57 over Brea Canyon Channel built?

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

What condition is State Route 57 over Brea Canyon Channel in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in August 2024.

How much traffic does State Route 57 over Brea Canyon Channel carry?

About 203,000 vehicles per day (2017 count), of which roughly 8% are trucks.

How long is State Route 57 over Brea Canyon Channel?

The structure is 20 ft (6.1 m) long with a longest span of 20 ft (6.1 m).

Who owns State Route 57 over Brea Canyon Channel?

It is owned by the State Highway Agency.