US Bridges

S55-S73 Connector over SR 73 & SR 55 & Conns

Fair

Orange County, California · 12-ORA-055-R4.74-CMS · Structure no. 55 0538F

Built
1976
49 years old
Condition
Fair
inspected February 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
2,237 ft
15 main spans
Daily traffic
22,000
2014 count
Owner
State
State Highway Agency

About this bridge

S55-S73 Connector over SR 73 & SR 55 & Conns is a prestressed concrete continuous box beam or girders - multiple carrying S55-S73 Connector over SR 73 & SR 55 & Conns in Orange County, California. It was built in 1976, so it is 49 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 22,000 vehicles a day, roughly 4% of them trucks, projected to reach 26,919 by 2044. The structure is 2,237 ft (681.8 m) long and 41 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesS55-S73 Connector
CrossesSR 73 & SR 55 & Conns
Location12-ORA-055-R4.74-CMS
RouteState Highway 55
CountyOrange County
StateCalifornia
Coordinates33.67068, -117.88466
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionFebruary 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 alignment6: Equal to present minimum criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans15
Design loadHS 20 + Mod
Structure length2,237 ft (681.8 m)
Longest span197 ft (60 m)
Deck width41 ft (12.5 m)
Roadway width39 ft (11.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic22,000 (2014)
Projected traffic26,919 by 2044
Trucks4%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

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—
NavigationNo navigation control on waterway

Frequently asked questions

When was S55-S73 Connector over SR 73 & SR 55 & Conns built?

It was built in 1976, making it 49 years old in 2025.

What condition is S55-S73 Connector over SR 73 & SR 55 & Conns 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 February 2024.

How much traffic does S55-S73 Connector over SR 73 & SR 55 & Conns carry?

About 22,000 vehicles per day (2014 count), of which roughly 4% are trucks.

How long is S55-S73 Connector over SR 73 & SR 55 & Conns?

The structure is 2,237 ft (681.8 m) long with a longest span of 197 ft (60 m) and a deck 41 ft wide.

Who owns S55-S73 Connector over SR 73 & SR 55 & Conns?

It is owned by the State Highway Agency.