US Bridges

Trabuco Road over State Route 133

Fair

Orange County, California · 12-ORA-133-10.90-IRVN · Structure no. 55 0777

Built
1997
28 years old
Condition
Fair
inspected January 2025
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
240 ft
2 main spans
Daily traffic
11,000
2017 count
Owner
State
State Highway Agency

About this bridge

Trabuco Road over State Route 133 is a prestressed concrete continuous box beam or girders - multiple carrying Trabuco Road over State Route 133 in Orange County, California. It was built in 1997, so it is 28 years old, younger than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 11,000 vehicles a day, roughly 3% of them trucks, projected to reach 17,230 by 2043. The structure is 240 ft (73.2 m) long and 96 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesTrabuco Road
CrossesState Route 133
Location12-ORA-133-10.90-IRVN
RouteCity Street 0
CountyOrange County
StateCalifornia
Coordinates33.68507, -117.74616
Functional classUrban Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.1 US tons
Inventory rating47.2 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length240 ft (73.2 m)
Longest span124 ft (37.8 m)
Deck width96 ft (29.3 m)
Roadway width84 ft (25.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,000 (2017)
Projected traffic17,230 by 2043
Trucks3%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed3.7 mi (6 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 Trabuco Road over State Route 133 built?

It was built in 1997, making it 28 years old in 2025.

What condition is Trabuco Road over State Route 133 in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in January 2025.

How much traffic does Trabuco Road over State Route 133 carry?

About 11,000 vehicles per day (2017 count), of which roughly 3% are trucks.

How long is Trabuco Road over State Route 133?

The structure is 240 ft (73.2 m) long with a longest span of 124 ft (37.8 m) and a deck 96 ft wide.

Who owns Trabuco Road over State Route 133?

It is owned by the State Highway Agency.