US Bridges

E105-N&S405 Conn over Lrt

Good

Los Angeles County, California · 07-LA-105-R1.63-LA · Structure no. 53 2805G

Built
1990
35 years old
Condition
Good
inspected April 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
1,209 ft
7 main spans
Daily traffic
24,300
2018 count
Owner
State
State Highway Agency

About this bridge

E105-N&S405 Conn over Lrt is a prestressed concrete continuous box beam or girders - multiple carrying E105-N&S405 Conn over 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 24,300 vehicles a day, roughly 2% of them trucks, projected to reach 27,583 by 2042. The structure is 1,209 ft (368.6 m) long and 42 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesE105-N&S405 Conn
CrossesLrt
Location07-LA-105-R1.63-LA
RouteInterstate 105
Coordinates33.92986, -118.37687
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 geometry9: Superior to present desirable 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 spans7 (+2 approach)
Design loadHS 20 + Mod
Structure length1,209 ft (368.6 m)
Longest span167 ft (51 m)
Deck width42 ft (12.8 m)
Roadway width39 ft (11.8 m)
Vertical clearance over deck18 ft (5.5 m)

Traffic and service

Average daily traffic24,300 (2018)
Projected traffic27,583 by 2042
Trucks2%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad
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 E105-N&S405 Conn over Lrt built?

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

What condition is E105-N&S405 Conn over 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 E105-N&S405 Conn over Lrt carry?

About 24,300 vehicles per day (2018 count), of which roughly 2% are trucks.

How long is E105-N&S405 Conn over Lrt?

The structure is 1,209 ft (368.6 m) long with a longest span of 167 ft (51 m) and a deck 42 ft wide.

Who owns E105-N&S405 Conn over Lrt?

It is owned by the State Highway Agency.