US Bridges

University DR over Interstate 405

Fair

Orange County, California · 12-ORA-405-3.95-IRVN · Structure no. 55 0248

Built
1968
57 years old, rebuilt 2006
Condition
Fair
inspected January 2025
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
352 ft
2 main spans
Daily traffic
15,000
2015 count
Owner
State
State Highway Agency

About this bridge

University DR over Interstate 405 is a prestressed concrete continuous box beam or girders - multiple carrying University DR over Interstate 405 in Orange County, California. It was built in 1968 and reconstructed in 2006, 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 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 15,000 vehicles a day, roughly 3% of them trucks, projected to reach 18,111 by 2045. The structure is 352 ft (107.3 m) long and 102 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesUniversity DR
CrossesInterstate 405
Location12-ORA-405-3.95-IRVN
RouteCity Street 0M026
Coordinates33.66302, -117.79506
Functional classUrban Minor Arterial

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 inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length352 ft (107.3 m)
Longest span176 ft (53.5 m)
Deck width102 ft (31.2 m)
Roadway width91 ft (27.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,000 (2015)
Projected traffic18,111 by 2045
Trucks3%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

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 University DR over Interstate 405 built?

It was built in 1968, making it 57 years old in 2025. It was reconstructed in 2006.

What condition is University DR over Interstate 405 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 January 2025.

How much traffic does University DR over Interstate 405 carry?

About 15,000 vehicles per day (2015 count), of which roughly 3% are trucks.

How long is University DR over Interstate 405?

The structure is 352 ft (107.3 m) long with a longest span of 176 ft (53.5 m) and a deck 102 ft wide.

Who owns University DR over Interstate 405?

It is owned by the State Highway Agency.