US Bridges

Trabuco Canyon Rd. over Trabuco Creek

Good

Orange County, California · 1.4 MI N/O Snta Margarita · Structure no. 55C0008

Built
1980
45 years old
Condition
Good
inspected April 2023
Type
Slab
Prestressed Concrete
Length
73 ft
6 main spans
Daily traffic
3,000
2020 count
Owner
County
County Highway Agency

About this bridge

Trabuco Canyon Rd. over Trabuco Creek is a prestressed concrete slab carrying Trabuco Canyon Rd. over Trabuco Creek in Orange County, California. It was built in 1980, so it is 45 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 3,000 vehicles a day, roughly 1% of them trucks, projected to reach 8,437 by 2040. The structure is 73 ft (22.3 m) long and 24 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesTrabuco Canyon Rd.
CrossesTrabuco Creek
Location1.4 MI N/O Snta Margarita
RouteCounty Highway 0
CountyOrange County
StateCalifornia
Coordinates33.65937, -117.5866
Functional classUrban Collector

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 inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating30 US tons
Inventory rating20.7 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans6
Design loadHS 20
Structure length73 ft (22.3 m)
Longest span11 ft (3.4 m)
Deck width24 ft (7.3 m)
Roadway width23 ft (7.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,000 (2020)
Projected traffic8,437 by 2040
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Trabuco Canyon Rd. over Trabuco Creek built?

It was built in 1980, making it 45 years old in 2025.

What condition is Trabuco Canyon Rd. 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 April 2023.

How much traffic does Trabuco Canyon Rd. over Trabuco Creek carry?

About 3,000 vehicles per day (2020 count), of which roughly 1% are trucks.

How long is Trabuco Canyon Rd. over Trabuco Creek?

The structure is 73 ft (22.3 m) long with a longest span of 11 ft (3.4 m) and a deck 24 ft wide.

Who owns Trabuco Canyon Rd. over Trabuco Creek?

It is owned by the County Highway Agency.