US Bridges

LA Paz RD-S73 on over Moulton Parkway

Good

Orange County, California · 12-ORA-073-12.91-LGNG · Structure no. 55 0750K

Built
1996
29 years old
Condition
Good
inspected July 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
328 ft
3 main spans
Daily traffic
1,250
2020 count
Owner
State
State Highway Agency

About this bridge

LA Paz RD-S73 on over Moulton Parkway is a prestressed concrete continuous box beam or girders - multiple carrying LA Paz RD-S73 on over Moulton Parkway 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 1,250 vehicles a day, roughly 1% of them trucks, projected to reach 1,445 by 2041. The structure is 328 ft (100 m) long and 43 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesLA Paz RD-S73 on
CrossesMoulton Parkway
Location12-ORA-073-12.91-LGNG
RouteState Highway 73
Coordinates33.56828, -117.69989
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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable 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

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length328 ft (100 m)
Longest span178 ft (54.3 m)
Deck width43 ft (13 m)
Roadway width39 ft (12 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,250 (2020)
Projected traffic1,445 by 2041
Trucks1%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was LA Paz RD-S73 on over Moulton Parkway built?

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

What condition is LA Paz RD-S73 on over Moulton Parkway 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 2024.

How much traffic does LA Paz RD-S73 on over Moulton Parkway carry?

About 1,250 vehicles per day (2020 count), of which roughly 1% are trucks.

How long is LA Paz RD-S73 on over Moulton Parkway?

The structure is 328 ft (100 m) long with a longest span of 178 ft (54.3 m) and a deck 43 ft wide.

Who owns LA Paz RD-S73 on over Moulton Parkway?

It is owned by the State Highway Agency.