US Bridges

Interstate 5 over Trabuco Creek

Good

Orange County, California · 12-ORA-005-11.45-SJCP · Structure no. 55 0289

Built
1959
66 years old, rebuilt 1997
Condition
Good
inspected June 2024
Type
Tee Beam
Concrete Continuous
Length
239 ft
5 main spans
Daily traffic
175,000
2022 count
Owner
State
State Highway Agency

About this bridge

Interstate 5 over Trabuco Creek is a concrete continuous tee beam carrying Interstate 5 over Trabuco Creek in Orange County, California. It was built in 1959 and reconstructed in 1997, 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 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 175,000 vehicles a day, roughly 7% of them trucks, projected to reach 343,915 by 2044. The structure is 239 ft (72.8 m) long and 221 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesInterstate 5
CrossesTrabuco Creek
Location12-ORA-005-11.45-SJCP
RouteInterstate 5
Coordinates33.52793, -117.66945
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2024
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 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 typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length239 ft (72.8 m)
Longest span52 ft (15.9 m)
Deck width221 ft (67.5 m)
Roadway width216 ft (65.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic175,000 (2022)
Projected traffic343,915 by 2044
Trucks7%
Lanes on structure12
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 5 over Trabuco Creek built?

It was built in 1959, making it 66 years old in 2025. It was reconstructed in 1997.

What condition is Interstate 5 over Trabuco Creek 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 Interstate 5 over Trabuco Creek carry?

About 175,000 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is Interstate 5 over Trabuco Creek?

The structure is 239 ft (72.8 m) long with a longest span of 52 ft (15.9 m) and a deck 221 ft wide.

Who owns Interstate 5 over Trabuco Creek?

It is owned by the State Highway Agency.