US Bridges

Route 105 & Lrt over Success Avenue

Good

Los Angeles County, California · 07-LA-105-R9.21-COM · Structure no. 53 2484

Built
1987
38 years old
Condition
Good
inspected June 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
109 ft
1 main span
Daily traffic
242,000
2022 count
Owner
State
State Highway Agency

About this bridge

Route 105 & Lrt over Success Avenue is a prestressed concrete box beam or girders - multiple carrying Route 105 & Lrt over Success Avenue in Los Angeles County, California. It was built in 1987, so it is 38 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 242,000 vehicles a day, roughly 5% of them trucks, projected to reach 270,000 by 2042. The structure is 109 ft (33.3 m) long and 193 ft wide.

CarriesRoute 105 & Lrt
CrossesSuccess Avenue
Location07-LA-105-R9.21-COM
RouteInterstate 105
Coordinates33.92841, -118.24947
Functional classUrban Principal Arterial - Interstate

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 inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum 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
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length109 ft (33.3 m)
Longest span109 ft (33.3 m)
Deck width193 ft (58.9 m)
Roadway width147 ft (44.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic242,000 (2022)
Projected traffic270,000 by 2042
Trucks5%
Lanes on structure9
Traffic directionTwo-way traffic
CarriesHighway and railroad
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusEligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Route 105 & Lrt over Success Avenue built?

It was built in 1987, making it 38 years old in 2025.

What condition is Route 105 & Lrt over Success Avenue 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 June 2024.

How much traffic does Route 105 & Lrt over Success Avenue carry?

About 242,000 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is Route 105 & Lrt over Success Avenue?

The structure is 109 ft (33.3 m) long with a longest span of 109 ft (33.3 m) and a deck 193 ft wide.

Who owns Route 105 & Lrt over Success Avenue?

It is owned by the State Highway Agency.