US Bridges

N5-N55 Connector over N55-4th ST & Irvine RD

Good

Orange County, California · 12-ORA-005-30.32-TUS · Structure no. 55 0645G

Built
1995
30 years old
Condition
Good
inspected July 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
298 ft
3 main spans
Daily traffic
39,000
2014 count
Owner
State
State Highway Agency

About this bridge

N5-N55 Connector over N55-4th ST & Irvine RD is a prestressed concrete continuous box beam or girders - multiple carrying N5-N55 Connector over N55-4th ST & Irvine RD in Orange County, California. It was built in 1995, so it is 30 years old, younger than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 39,000 vehicles a day, roughly 3% of them trucks, projected to reach 46,622 by 2040. The structure is 298 ft (90.8 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesN5-N55 Connector
CrossesN55-4th ST & Irvine RD
Location12-ORA-005-30.32-TUS
RouteInterstate 5
CountyOrange County
StateCalifornia
Coordinates33.74372, -117.83314
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJuly 2023
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 rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length298 ft (90.8 m)
Longest span128 ft (39 m)
Deck width43 ft (13 m)
Roadway width39 ft (11.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic39,000 (2014)
Projected traffic46,622 by 2040
Trucks3%
Lanes on structure2
Traffic directionOne-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 N5-N55 Connector over N55-4th ST & Irvine RD built?

It was built in 1995, making it 30 years old in 2025.

What condition is N5-N55 Connector over N55-4th ST & Irvine RD in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in July 2023.

How much traffic does N5-N55 Connector over N55-4th ST & Irvine RD carry?

About 39,000 vehicles per day (2014 count), of which roughly 3% are trucks.

How long is N5-N55 Connector over N55-4th ST & Irvine RD?

The structure is 298 ft (90.8 m) long with a longest span of 128 ft (39 m) and a deck 43 ft wide.

Who owns N5-N55 Connector over N55-4th ST & Irvine RD?

It is owned by the State Highway Agency.