US Bridges

State Route 55 over Taft Avenue

Fair

Orange County, California · 12-ORA-055-15.75-ORA · Structure no. 55 0326

Built
1961
64 years old, rebuilt 2002
Condition
Fair
inspected March 2024
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
159 ft
3 main spans
Daily traffic
227,000
2020 count
Owner
State
State Highway Agency

About this bridge

State Route 55 over Taft Avenue is a concrete continuous box beam or girders - multiple carrying State Route 55 over Taft Avenue in Orange County, California. It was built in 1961 and reconstructed in 2002, so it is 64 years old, older 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 227,000 vehicles a day, roughly 6% of them trucks, projected to reach 275,000 by 2042. The structure is 159 ft (48.5 m) long and 191 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesState Route 55
CrossesTaft Avenue
Location12-ORA-055-15.75-ORA
RouteState Highway 55
Coordinates33.81733, -117.83173
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionMarch 2024
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 rating32.8 US tons
Inventory rating25.4 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length159 ft (48.5 m)
Longest span83 ft (25.3 m)
Deck width191 ft (58.3 m)
Roadway width186 ft (56.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic227,000 (2020)
Projected traffic275,000 by 2042
Trucks6%
Lanes on structure11
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was State Route 55 over Taft Avenue built?

It was built in 1961, making it 64 years old in 2025. It was reconstructed in 2002.

What condition is State Route 55 over Taft Avenue 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 March 2024.

How much traffic does State Route 55 over Taft Avenue carry?

About 227,000 vehicles per day (2020 count), of which roughly 6% are trucks.

How long is State Route 55 over Taft Avenue?

The structure is 159 ft (48.5 m) long with a longest span of 83 ft (25.3 m) and a deck 191 ft wide.

Who owns State Route 55 over Taft Avenue?

It is owned by the State Highway Agency.