US Bridges

SR 73 NB over San Diego CR University

Fair

Orange County, California · 12-ORA-073-24.36-IRVN · Structure no. 55 0731R

Built
1996
29 years old
Condition
Fair
inspected May 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
1,122 ft
7 main spans
Daily traffic
33,000
2014 count
Owner
State
State Highway Agency

About this bridge

SR 73 NB over San Diego CR University is a prestressed concrete continuous box beam or girders - multiple carrying SR 73 NB over San Diego CR University in Orange County, California. It was built in 1996, so it is 29 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 33,000 vehicles a day, projected to reach 40,200 by 2042. The structure is 1,122 ft (342 m) long and 72 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesSR 73 NB
CrossesSan Diego CR University
Location12-ORA-073-24.36-IRVN
RouteState Highway 73
Coordinates33.64962, -117.86101
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.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable 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 spans7
Design loadHS 20 + Mod
Structure length1,122 ft (342 m)
Longest span180 ft (55 m)
Deck width72 ft (21.8 m)
Roadway width68 ft (20.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic33,000 (2014)
Projected traffic40,200 by 2042
Trucks0%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and waterway
Detour if closed0.6 mi (1 km)
TollOn a toll 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 SR 73 NB over San Diego CR University built?

It was built in 1996, making it 29 years old in 2025.

What condition is SR 73 NB over San Diego CR University 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 May 2024.

How much traffic does SR 73 NB over San Diego CR University carry?

About 33,000 vehicles per day (2014 count).

How long is SR 73 NB over San Diego CR University?

The structure is 1,122 ft (342 m) long with a longest span of 180 ft (55 m) and a deck 72 ft wide.

Who owns SR 73 NB over San Diego CR University?

It is owned by the State Highway Agency.