US Bridges

Imperial Highway over Route 105 & Lrt

Fair

Los Angeles County, California · 07-LA-105-R3.51-HAW · Structure no. 53 2655

Built
1993
32 years old
Condition
Fair
inspected April 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
636 ft
4 main spans
Daily traffic
32,900
2014 count
Owner
State
State Highway Agency

About this bridge

Imperial Highway over Route 105 & Lrt is a prestressed concrete continuous box beam or girders - multiple carrying Imperial Highway over Route 105 & Lrt 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 32,900 vehicles a day, roughly 1% of them trucks, projected to reach 48,410 by 2041. The structure is 636 ft (194 m) long and 104 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesImperial Highway
CrossesRoute 105 & Lrt
Location07-LA-105-R3.51-HAW
RouteCity Street 0
CountyLos Angeles County
StateCalifornia
Coordinates33.9311, -118.34444
Functional classUrban Other Principal 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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment9: Superior to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length636 ft (194 m)
Longest span165 ft (50.2 m)
Deck width104 ft (31.7 m)
Roadway width90 ft (27.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic32,900 (2014)
Projected traffic48,410 by 2041
Trucks1%
Lanes on structure7
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway and railroad
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

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 Imperial Highway over Route 105 & Lrt built?

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

What condition is Imperial Highway over Route 105 & Lrt 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 April 2024.

How much traffic does Imperial Highway over Route 105 & Lrt carry?

About 32,900 vehicles per day (2014 count), of which roughly 1% are trucks.

How long is Imperial Highway over Route 105 & Lrt?

The structure is 636 ft (194 m) long with a longest span of 165 ft (50.2 m) and a deck 104 ft wide.

Who owns Imperial Highway over Route 105 & Lrt?

It is owned by the State Highway Agency.