US Bridges

N405-S55 Connector over S55-PAULARINO Ave Off-Rp

Fair

Orange County, California · 12-ORA-405-8.88-CMS · Structure no. 55 0436G

Built
1968
57 years old
Condition
Fair
inspected February 2025
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
228 ft
3 main spans
Daily traffic
25,000
2014 count
Owner
State
State Highway Agency

About this bridge

N405-S55 Connector over S55-PAULARINO Ave Off-Rp is a concrete continuous box beam or girders - multiple carrying N405-S55 Connector over S55-PAULARINO Ave Off-Rp in Orange County, California. It was built in 1968, so it is 57 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 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 25,000 vehicles a day, roughly 5% of them trucks, projected to reach 30,186 by 2045. The structure is 228 ft (69.5 m) long and 28 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesN405-S55 Connector
CrossesS55-PAULARINO Ave Off-Rp
Location12-ORA-405-8.88-CMS
RouteInterstate 405
CountyOrange County
StateCalifornia
Coordinates33.68442, -117.87559
Functional classUrban Principal Arterial - Interstate

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52.1 US tons
Inventory rating38.9 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length228 ft (69.5 m)
Longest span91 ft (27.7 m)
Deck width28 ft (8.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25,000 (2014)
Projected traffic30,186 by 2045
Trucks5%
Lanes on structure1
Traffic directionOne-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 N405-S55 Connector over S55-PAULARINO Ave Off-Rp built?

It was built in 1968, making it 57 years old in 2025.

What condition is N405-S55 Connector over S55-PAULARINO Ave Off-Rp 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 2025.

How much traffic does N405-S55 Connector over S55-PAULARINO Ave Off-Rp carry?

About 25,000 vehicles per day (2014 count), of which roughly 5% are trucks.

How long is N405-S55 Connector over S55-PAULARINO Ave Off-Rp?

The structure is 228 ft (69.5 m) long with a longest span of 91 ft (27.7 m) and a deck 28 ft wide.

Who owns N405-S55 Connector over S55-PAULARINO Ave Off-Rp?

It is owned by the State Highway Agency.