US Bridges

SR 73 NB over LA Paz Road

Good

Orange County, California · 12-ORA-073-13.40-LGNG · Structure no. 55 0752R

Built
1996
29 years old
Condition
Good
inspected November 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
280 ft
3 main spans
Daily traffic
25,000
2020 count
Owner
State
State Highway Agency

About this bridge

SR 73 NB over LA Paz Road is a prestressed concrete continuous box beam or girders - multiple carrying SR 73 NB over LA Paz Road 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 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 25,000 vehicles a day, roughly 8% of them trucks, projected to reach 26,400 by 2040. The structure is 280 ft (85.3 m) long and 59 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

Location

Open in Google Maps
CarriesSR 73 NB
CrossesLA Paz Road
Location12-ORA-073-13.40-LGNG
RouteState Highway 73
CountyOrange County
StateCalifornia
Coordinates33.57369, -117.70587
Functional classUrban Principal Arterial - Other Freeway or Expressway

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 inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum 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 length280 ft (85.3 m)
Longest span150 ft (45.8 m)
Deck width59 ft (18.1 m)
Roadway width56 ft (17.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25,000 (2020)
Projected traffic26,400 by 2040
Trucks8%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed2.5 mi (4 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR 73 NB over LA Paz Road built?

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

What condition is SR 73 NB over LA Paz Road 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 November 2023.

How much traffic does SR 73 NB over LA Paz Road carry?

About 25,000 vehicles per day (2020 count), of which roughly 8% are trucks.

How long is SR 73 NB over LA Paz Road?

The structure is 280 ft (85.3 m) long with a longest span of 150 ft (45.8 m) and a deck 59 ft wide.

Who owns SR 73 NB over LA Paz Road?

It is owned by the State Highway Agency.