US Bridges

Macarthur Blvd over SR 73 Ramps Bonita Crk

Good

Orange County, California · 12-ORA-073-23.82-IRVN · Structure no. 55 0734

Built
1996
29 years old
Condition
Good
inspected May 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
1,470 ft
7 main spans
Daily traffic
20,000
2014 count
Owner
State
State Highway Agency

About this bridge

Macarthur Blvd over SR 73 Ramps Bonita Crk is a prestressed concrete continuous box beam or girders - multiple carrying Macarthur Blvd over SR 73 Ramps Bonita Crk 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 20,000 vehicles a day, roughly 1% of them trucks, projected to reach 22,000 by 2042. The structure is 1,470 ft (448 m) long and 97 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesMacarthur Blvd
CrossesSR 73 Ramps Bonita Crk
Location12-ORA-073-23.82-IRVN
RouteCity Street 0
Coordinates33.64004, -117.86059
Functional classUrban Minor Arterial

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.
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 length1,470 ft (448 m)
Longest span240 ft (73 m)
Deck width97 ft (29.7 m)
Roadway width93 ft (28.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20,000 (2014)
Projected traffic22,000 by 2042
Trucks1%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway and waterway
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 Macarthur Blvd over SR 73 Ramps Bonita Crk built?

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

What condition is Macarthur Blvd over SR 73 Ramps Bonita Crk 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 May 2024.

How much traffic does Macarthur Blvd over SR 73 Ramps Bonita Crk carry?

About 20,000 vehicles per day (2014 count), of which roughly 1% are trucks.

How long is Macarthur Blvd over SR 73 Ramps Bonita Crk?

The structure is 1,470 ft (448 m) long with a longest span of 240 ft (73 m) and a deck 97 ft wide.

Who owns Macarthur Blvd over SR 73 Ramps Bonita Crk?

It is owned by the State Highway Agency.