US Bridges

State Route 55 over N55-W22 Connector Ramp

Fair

Orange County, California · 12-ORA-055-12.93-TUS · Structure no. 55 0336

Built
1962
63 years old, rebuilt 2002
Condition
Fair
inspected March 2024
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
221 ft
3 main spans
Daily traffic
271,900
2020 count
Owner
State
State Highway Agency

About this bridge

State Route 55 over N55-W22 Connector Ramp is a concrete continuous box beam or girders - multiple carrying State Route 55 over N55-W22 Connector Ramp in Orange County, California. It was built in 1962 and reconstructed in 2002, so it is 63 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 271,900 vehicles a day, roughly 8% of them trucks, projected to reach 375,000 by 2042. The structure is 221 ft (67.5 m) long and 180 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesState Route 55
CrossesN55-W22 Connector Ramp
Location12-ORA-055-12.93-TUS
RouteState Highway 55
CountyOrange County
StateCalifornia
Coordinates33.77599, -117.83072
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 evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66.8 US tons
Inventory rating40.3 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3 (+3 approach)
Design loadHS 20 + Mod
Structure length221 ft (67.5 m)
Longest span91 ft (27.7 m)
Deck width180 ft (55 m)
Roadway width175 ft (53.3 m)
Vertical clearance over deck18 ft (5.5 m)

Traffic and service

Average daily traffic271,900 (2020)
Projected traffic375,000 by 2042
Trucks8%
Lanes on structure11
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 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 N55-W22 Connector Ramp built?

It was built in 1962, making it 63 years old in 2025. It was reconstructed in 2002.

What condition is State Route 55 over N55-W22 Connector Ramp 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 N55-W22 Connector Ramp carry?

About 271,900 vehicles per day (2020 count), of which roughly 8% are trucks.

How long is State Route 55 over N55-W22 Connector Ramp?

The structure is 221 ft (67.5 m) long with a longest span of 91 ft (27.7 m) and a deck 180 ft wide.

Who owns State Route 55 over N55-W22 Connector Ramp?

It is owned by the State Highway Agency.