US Bridges

Golden West ST over Westminster Channel

Good

Orange County, California · 0.1 MI S Route 1-405 · Structure no. 55C0135

Built
1965
60 years old
Condition
Good
inspected April 2021
Type
Culvert
Concrete
Length
37 ft
2 main spans
Daily traffic
39,000
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

Golden West ST over Westminster Channel is a concrete culvert carrying Golden West ST over Westminster Channel in Orange County, California. It was built in 1965, so it is 60 years old, older 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 39,000 vehicles a day, roughly 1% of them trucks, projected to reach 50,794 by 2039. The structure is 37 ft (11.3 m) long and 134 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesGolden West ST
CrossesWestminster Channel
Location0.1 MI S Route 1-405
RouteCity Street 0
CountyOrange County
StateCalifornia
Coordinates33.74513, -118.00679
Functional classUrban Other Principal Arterial

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 protection9 ExcellentNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionApril 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than 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 rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadUnknown
Structure length37 ft (11.3 m)
Longest span17 ft (5.2 m)
Deck width134 ft (40.7 m)
Roadway width101 ft (30.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic39,000 (2021)
Projected traffic50,794 by 2039
Trucks1%
Lanes on structure7
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Golden West ST over Westminster Channel built?

It was built in 1965, making it 60 years old in 2025.

What condition is Golden West ST over Westminster 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 April 2021.

How much traffic does Golden West ST over Westminster Channel carry?

About 39,000 vehicles per day (2021 count), of which roughly 1% are trucks.

How long is Golden West ST over Westminster Channel?

The structure is 37 ft (11.3 m) long with a longest span of 17 ft (5.2 m) and a deck 134 ft wide.

Who owns Golden West ST over Westminster Channel?

It is owned by the City or Municipal Highway Agency.