US Bridges

Macarthur over Interstate 110

Good

Los Angeles County, California · 07-LA-110-R1.06-LA · Structure no. 53 1922

Built
1970
55 years old
Condition
Good
inspected February 2024
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
365 ft
3 main spans
Daily traffic
75
2020 count
Owner
State
State Highway Agency

About this bridge

Macarthur over Interstate 110 is a concrete continuous box beam or girders - multiple carrying Macarthur over Interstate 110 in Los Angeles County, California. It was built in 1970, so it is 55 years old, older 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 75 vehicles a day, roughly 1% of them trucks, projected to reach 113 by 2044. The structure is 365 ft (111.3 m) long and 46 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesMacarthur
CrossesInterstate 110
Location07-LA-110-R1.06-LA
RouteCity Street 0
Coordinates33.75079, -118.29185
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.
Last inspectionFebruary 2024
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 rating69.3 US tons
Inventory rating53.6 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length365 ft (111.3 m)
Longest span134 ft (40.8 m)
Deck width46 ft (14 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic75 (2020)
Projected traffic113 by 2044
Trucks1%
Lanes on structure2
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 Macarthur over Interstate 110 built?

It was built in 1970, making it 55 years old in 2025.

What condition is Macarthur over Interstate 110 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 February 2024.

How much traffic does Macarthur over Interstate 110 carry?

About 75 vehicles per day (2020 count), of which roughly 1% are trucks.

How long is Macarthur over Interstate 110?

The structure is 365 ft (111.3 m) long with a longest span of 134 ft (40.8 m) and a deck 46 ft wide.

Who owns Macarthur over Interstate 110?

It is owned by the State Highway Agency.