US Bridges

Warner Avenue over Route 405

Good

Orange County, California · 12-ORA-405-14.82-FNV · Structure no. 55 1126

Built
2024
1 years old
Condition
Good
inspected June 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
474 ft
2 main spans
Daily traffic
24,270
2024 count
Owner
State
State Highway Agency

About this bridge

Warner Avenue over Route 405 is a prestressed concrete continuous box beam or girders - multiple carrying Warner Avenue over Route 405 in Orange County, California. It was built in 2024, so it is 1 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 24,270 vehicles a day, roughly 2% of them trucks, projected to reach 32,689 by 2044. The structure is 474 ft (144.5 m) long and 124 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesWarner Avenue
CrossesRoute 405
Location12-ORA-405-14.82-FNV
RouteCity Street 0
Coordinates33.71589, -117.96772
Functional classUrban Minor Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length474 ft (144.5 m)
Longest span238 ft (72.5 m)
Deck width124 ft (37.8 m)
Roadway width124 ft (37.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24,270 (2024)
Projected traffic32,689 by 2044
Trucks2%
Lanes on structure8
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Warner Avenue over Route 405 built?

It was built in 2024, making it 1 years old in 2025.

What condition is Warner Avenue over Route 405 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 June 2024.

How much traffic does Warner Avenue over Route 405 carry?

About 24,270 vehicles per day (2024 count), of which roughly 2% are trucks.

How long is Warner Avenue over Route 405?

The structure is 474 ft (144.5 m) long with a longest span of 238 ft (72.5 m) and a deck 124 ft wide.

Who owns Warner Avenue over Route 405?

It is owned by the State Highway Agency.