US Bridges

SR 90 (imperial) over Brea Canyon Creek

Fair

Orange County, California · 12-ORA-090-4.07-BRE · Structure no. 55 0083

Built
1959
66 years old, rebuilt 1993
Condition
Fair
inspected September 2023
Type
Culvert
Concrete Continuous
Length
67 ft
4 main spans
Daily traffic
47,500
2020 count
Owner
State
State Highway Agency

About this bridge

SR 90 (imperial) over Brea Canyon Creek is a concrete continuous culvert carrying SR 90 (imperial) over Brea Canyon Creek in Orange County, California. It was built in 1959 and reconstructed in 1993, 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 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 47,500 vehicles a day, roughly 6% of them trucks, projected to reach 58,600 by 2040. The structure is 67 ft (20.4 m) long and 85 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesSR 90 (imperial)
CrossesBrea Canyon Creek
Location12-ORA-090-4.07-BRE
RouteState Highway 90
CountyOrange County
StateCalifornia
Coordinates33.91729, -117.90586
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 inspectionSeptember 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal 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 Continuous
DeckNot applicable
Main spans4
Design loadUnknown
Structure length67 ft (20.4 m)
Longest span16 ft (4.9 m)
Deck width85 ft (26 m)
Roadway width82 ft (25 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic47,500 (2020)
Projected traffic58,600 by 2040
Trucks6%
Lanes on structure6
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

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 SR 90 (imperial) over Brea Canyon Creek built?

It was built in 1959, making it 66 years old in 2025. It was reconstructed in 1993.

What condition is SR 90 (imperial) over Brea Canyon 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 September 2023.

How much traffic does SR 90 (imperial) over Brea Canyon Creek carry?

About 47,500 vehicles per day (2020 count), of which roughly 6% are trucks.

How long is SR 90 (imperial) over Brea Canyon Creek?

The structure is 67 ft (20.4 m) long with a longest span of 16 ft (4.9 m) and a deck 85 ft wide.

Who owns SR 90 (imperial) over Brea Canyon Creek?

It is owned by the State Highway Agency.