US Bridges

Triggs Avenue over Route 5

Fair

Los Angeles County, California · 07-LA-005-12.92-CMRC · Structure no. 53 0025

Built
1950
75 years old
Condition
Fair
inspected February 2023
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
142 ft
2 main spans
Daily traffic
2,820
2019 count
Owner
State
State Highway Agency

About this bridge

Triggs Avenue over Route 5 is a concrete continuous box beam or girders - multiple carrying Triggs Avenue over Route 5 in Los Angeles County, California. It was built in 1950, so it is 75 years old, older than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 2,820 vehicles a day, roughly 3% of them trucks, projected to reach 4,551 by 2045. The structure is 142 ft (43.3 m) long and 35 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesTriggs Avenue
CrossesRoute 5
Location07-LA-005-12.92-CMRC
RouteCity Street 0
CountyLos Angeles County
StateCalifornia
Coordinates34.01021, -118.16016
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionFebruary 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating105.1 US tons
Inventory rating63.2 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length142 ft (43.3 m)
Longest span72 ft (21.9 m)
Deck width35 ft (10.8 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,820 (2019)
Projected traffic4,551 by 2045
Trucks3%
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 Triggs Avenue over Route 5 built?

It was built in 1950, making it 75 years old in 2025.

What condition is Triggs Avenue over Route 5 in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in February 2023.

How much traffic does Triggs Avenue over Route 5 carry?

About 2,820 vehicles per day (2019 count), of which roughly 3% are trucks.

How long is Triggs Avenue over Route 5?

The structure is 142 ft (43.3 m) long with a longest span of 72 ft (21.9 m) and a deck 35 ft wide.

Who owns Triggs Avenue over Route 5?

It is owned by the State Highway Agency.