US Bridges

Interstate 405 over E Garden Grove Channel

Good

Orange County, California · 12-ORA-405-15.87-WTM · Structure no. 55 0480

Built
1966
59 years old
Condition
Good
inspected August 2023
Type
Culvert
Concrete
Length
34 ft
3 main spans
Daily traffic
263,000
2014 count
Owner
State
State Highway Agency

About this bridge

Interstate 405 over E Garden Grove Channel is a concrete culvert carrying Interstate 405 over E Garden Grove Channel in Orange County, California. It was built in 1966, so it is 59 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 263,000 vehicles a day, roughly 7% of them trucks, projected to reach 362,000 by 2040. The structure is 34 ft (10.4 m) long and 153 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesInterstate 405
CrossesE Garden Grove Channel
Location12-ORA-405-15.87-WTM
RouteInterstate 405
Coordinates33.72681, -117.98049
Functional classUrban Principal Arterial - Interstate

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 protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy7: Better than present minimum 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 spans3
Design loadUnknown
Structure length34 ft (10.4 m)
Longest span10 ft (3.1 m)
Deck width153 ft (46.7 m)
Roadway width150 ft (45.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic263,000 (2014)
Projected traffic362,000 by 2040
Trucks7%
Lanes on structure10
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 Interstate 405 over E Garden Grove Channel built?

It was built in 1966, making it 59 years old in 2025.

What condition is Interstate 405 over E Garden Grove 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 2023.

How much traffic does Interstate 405 over E Garden Grove Channel carry?

About 263,000 vehicles per day (2014 count), of which roughly 7% are trucks.

How long is Interstate 405 over E Garden Grove Channel?

The structure is 34 ft (10.4 m) long with a longest span of 10 ft (3.1 m) and a deck 153 ft wide.

Who owns Interstate 405 over E Garden Grove Channel?

It is owned by the State Highway Agency.