US Bridges

State Route 71 WB over I 10 & Conn

Fair

Los Angeles County, California · 07-LA-071-R0.52-POM · Structure no. 53 1999L

Built
1972
53 years old
Condition
Fair
inspected October 2024
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
807 ft
7 main spans
Daily traffic
31,550
2022 count
Owner
State
State Highway Agency

About this bridge

State Route 71 WB over I 10 & Conn is a concrete continuous box beam or girders - multiple carrying State Route 71 WB over I 10 & Conn in Los Angeles County, California. It was built in 1972, so it is 53 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 31,550 vehicles a day, projected to reach 51,660 by 2044. The structure is 807 ft (246 m) long and 41 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesState Route 71 WB
CrossesI 10 & Conn
Location07-LA-071-R0.52-POM
RouteState Highway 71
Coordinates34.0673, -117.80452
Functional classUrban Principal Arterial - Other Freeway or Expressway

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 inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating110 US tons
Inventory rating86.1 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans7
Design loadHS 20
Structure length807 ft (246 m)
Longest span134 ft (40.8 m)
Deck width41 ft (12.5 m)
Roadway width39 ft (11.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic31,550 (2022)
Projected traffic51,660 by 2044
Trucks0%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
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 statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was State Route 71 WB over I 10 & Conn built?

It was built in 1972, making it 53 years old in 2025.

What condition is State Route 71 WB over I 10 & 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 October 2024.

How much traffic does State Route 71 WB over I 10 & Conn carry?

About 31,550 vehicles per day (2022 count).

How long is State Route 71 WB over I 10 & Conn?

The structure is 807 ft (246 m) long with a longest span of 134 ft (40.8 m) and a deck 41 ft wide.

Who owns State Route 71 WB over I 10 & Conn?

It is owned by the State Highway Agency.