US Bridges

W105-IMPERIAL Offr over Route 105 & Lrt

Good

Los Angeles County, California · 07-LA-105-R1.79-LA · Structure no. 53 2807K

Built
1990
35 years old
Condition
Good
inspected April 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
865 ft
4 main spans
Daily traffic
16,949
2014 count
Owner
State
State Highway Agency

About this bridge

W105-IMPERIAL Offr over Route 105 & Lrt is a prestressed concrete continuous box beam or girders - multiple carrying W105-IMPERIAL Offr over Route 105 & Lrt in Los Angeles County, California. It was built in 1990, so it is 35 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 16,949 vehicles a day, roughly 5% of them trucks, projected to reach 19,420 by 2042. The structure is 865 ft (263.7 m) long and 48 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesW105-IMPERIAL Offr
CrossesRoute 105 & Lrt
Location07-LA-105-R1.79-LA
RouteInterstate 105
Coordinates33.93031, -118.37396
Functional classUrban Other Principal 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 inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
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 spans4 (+2 approach)
Design loadHS 20 + Mod
Structure length865 ft (263.7 m)
Longest span160 ft (48.8 m)
Deck width48 ft (14.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,949 (2014)
Projected traffic19,420 by 2042
Trucks5%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesOther
Detour if closed1.2 mi (2 km)
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 W105-IMPERIAL Offr over Route 105 & Lrt built?

It was built in 1990, making it 35 years old in 2025.

What condition is W105-IMPERIAL Offr over Route 105 & Lrt 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 April 2024.

How much traffic does W105-IMPERIAL Offr over Route 105 & Lrt carry?

About 16,949 vehicles per day (2014 count), of which roughly 5% are trucks.

How long is W105-IMPERIAL Offr over Route 105 & Lrt?

The structure is 865 ft (263.7 m) long with a longest span of 160 ft (48.8 m) and a deck 48 ft wide.

Who owns W105-IMPERIAL Offr over Route 105 & Lrt?

It is owned by the State Highway Agency.