US Bridges

IMPERIAL-E105 Onrp over Route 105 & Lrt

Fair

Los Angeles County, California · 07-LA-105-R1.79-LA · Structure no. 53 2806S

Built
1989
36 years old
Condition
Fair
inspected April 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
862 ft
4 main spans
Daily traffic
6,941
2014 count
Owner
State
State Highway Agency

About this bridge

IMPERIAL-E105 Onrp over Route 105 & Lrt is a prestressed concrete continuous box beam or girders - multiple carrying IMPERIAL-E105 Onrp over Route 105 & Lrt in Los Angeles County, California. It was built in 1989, so it is 36 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 6,941 vehicles a day, roughly 3% of them trucks, projected to reach 8,157 by 2042. The structure is 862 ft (262.7 m) long and 48 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesIMPERIAL-E105 Onrp
CrossesRoute 105 & Lrt
Location07-LA-105-R1.79-LA
RouteInterstate 105
CountyLos Angeles County
StateCalifornia
Coordinates33.9296, -118.37386
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.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 geometry6: Equal to present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 (+2 approach)
Design loadHS 20 + Mod
Structure length862 ft (262.7 m)
Longest span160 ft (48.8 m)
Deck width48 ft (14.5 m)
Roadway width44 ft (13.5 m)
Vertical clearance over deck18 ft (5.5 m)

Traffic and service

Average daily traffic6,941 (2014)
Projected traffic8,157 by 2042
Trucks3%
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 IMPERIAL-E105 Onrp over Route 105 & Lrt built?

It was built in 1989, making it 36 years old in 2025.

What condition is IMPERIAL-E105 Onrp 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-E105 Onrp over Route 105 & Lrt carry?

About 6,941 vehicles per day (2014 count), of which roughly 3% are trucks.

How long is IMPERIAL-E105 Onrp over Route 105 & Lrt?

The structure is 862 ft (262.7 m) long with a longest span of 160 ft (48.8 m) and a deck 48 ft wide.

Who owns IMPERIAL-E105 Onrp over Route 105 & Lrt?

It is owned by the State Highway Agency.