US Bridges

E/B Snta Mrgta Pwy over Arroyo Trabuco

Fair

Orange County, California · 0.2 Mi. Se/O Alicia Pkwy · Structure no. 55C0520R

Built
1984
41 years old
Condition
Fair
inspected September 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
1,200 ft
7 main spans
Daily traffic
29,150
2017 count
Owner
County
County Highway Agency

About this bridge

E/B Snta Mrgta Pwy over Arroyo Trabuco is a prestressed concrete continuous box beam or girders - multiple carrying E/B Snta Mrgta Pwy over Arroyo Trabuco in Orange County, California. It was built in 1984, so it is 41 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 6 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 29,150 vehicles a day, roughly 3% of them trucks, projected to reach 49,166 by 2042. The structure is 1,200 ft (365.8 m) long and 68 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesE/B Snta Mrgta Pwy
CrossesArroyo Trabuco
Location0.2 Mi. Se/O Alicia Pkwy
RouteCounty Highway 0
Coordinates33.63798, -117.618
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 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

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans7
Design loadHS 20 + Mod
Structure length1,200 ft (365.8 m)
Longest span184 ft (56.1 m)
Deck width68 ft (20.6 m)
Roadway width57 ft (17.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic29,150 (2017)
Projected traffic49,166 by 2042
Trucks3%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemYes

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 E/B Snta Mrgta Pwy over Arroyo Trabuco built?

It was built in 1984, making it 41 years old in 2025.

What condition is E/B Snta Mrgta Pwy over Arroyo Trabuco 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 September 2024.

How much traffic does E/B Snta Mrgta Pwy over Arroyo Trabuco carry?

About 29,150 vehicles per day (2017 count), of which roughly 3% are trucks.

How long is E/B Snta Mrgta Pwy over Arroyo Trabuco?

The structure is 1,200 ft (365.8 m) long with a longest span of 184 ft (56.1 m) and a deck 68 ft wide.

Who owns E/B Snta Mrgta Pwy over Arroyo Trabuco?

It is owned by the County Highway Agency.