US Bridges

GARFIELD-W105 Onra over W105-N&S 710 Conn

Fair

Los Angeles County, California · 07-LA-105-R13.83-PRM · Structure no. 53 2421K

Built
1993
32 years old
Condition
Fair
inspected May 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
435 ft
3 main spans
Daily traffic
9,980
2020 count
Owner
State
State Highway Agency

About this bridge

GARFIELD-W105 Onra over W105-N&S 710 Conn is a prestressed concrete continuous box beam or girders - multiple carrying GARFIELD-W105 Onra over W105-N&S 710 Conn in Los Angeles County, California. It was built in 1993, so it is 32 years old, younger 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 5 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 9,980 vehicles a day, roughly 2% of them trucks, projected to reach 4,183 by 2041. The structure is 435 ft (132.6 m) long and 39 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesGARFIELD-W105 Onra
CrossesW105-N&S 710 Conn
Location07-LA-105-R13.83-PRM
RouteState Highway 105
Coordinates33.91156, -118.17462
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionMay 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 rating59.6 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length435 ft (132.6 m)
Longest span185 ft (56.4 m)
Deck width39 ft (12 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,980 (2020)
Projected traffic4,183 by 2041
Trucks2%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and railroad
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkNon-Interstate 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 GARFIELD-W105 Onra over W105-N&S 710 Conn built?

It was built in 1993, making it 32 years old in 2025.

What condition is GARFIELD-W105 Onra over W105-N&S 710 Conn 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 May 2024.

How much traffic does GARFIELD-W105 Onra over W105-N&S 710 Conn carry?

About 9,980 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is GARFIELD-W105 Onra over W105-N&S 710 Conn?

The structure is 435 ft (132.6 m) long with a longest span of 185 ft (56.4 m) and a deck 39 ft wide.

Who owns GARFIELD-W105 Onra over W105-N&S 710 Conn?

It is owned by the State Highway Agency.