US Bridges

State Route 71 over Philadelphia ST Stm Drn

Good

Los Angeles County, California · 07-LA-071-R3.88-POM · Structure no. 53 1463

Built
1958
67 years old, rebuilt 1982
Condition
Good
inspected October 2022
Type
Culvert
Concrete
Length
25 ft
3 main spans
Daily traffic
77,000
2020 count
Owner
State
State Highway Agency

About this bridge

State Route 71 over Philadelphia ST Stm Drn is a concrete culvert carrying State Route 71 over Philadelphia ST Stm Drn in Los Angeles County, California. It was built in 1958 and reconstructed in 1982, so it is 67 years old, older 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 77,000 vehicles a day, roughly 6% of them trucks, projected to reach 86,000 by 2040. The structure is 25 ft (7.6 m) long and 91 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesState Route 71
CrossesPhiladelphia ST Stm Drn
Location07-LA-071-R3.88-POM
RouteState Highway 71
Coordinates34.02756, -117.75289
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionOctober 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadUnknown
Structure length25 ft (7.6 m)
Longest span9 ft (2.7 m)
Deck width91 ft (27.7 m)
Roadway width91 ft (27.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic77,000 (2020)
Projected traffic86,000 by 2040
Trucks6%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was State Route 71 over Philadelphia ST Stm Drn built?

It was built in 1958, making it 67 years old in 2025. It was reconstructed in 1982.

What condition is State Route 71 over Philadelphia ST Stm Drn 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 October 2022.

How much traffic does State Route 71 over Philadelphia ST Stm Drn carry?

About 77,000 vehicles per day (2020 count), of which roughly 6% are trucks.

How long is State Route 71 over Philadelphia ST Stm Drn?

The structure is 25 ft (7.6 m) long with a longest span of 9 ft (2.7 m) and a deck 91 ft wide.

Who owns State Route 71 over Philadelphia ST Stm Drn?

It is owned by the State Highway Agency.