US Bridges

State Route 71 over UP RR AMTRAK Metrolink

Fair

Los Angeles County, California · 07-LA-071-1.20-POM · Structure no. 53 0346

Built
1939
86 years old
Condition
Fair
inspected October 2024
Type
Tee Beam
Concrete Continuous
Length
233 ft
7 main spans
Daily traffic
69,500
2021 count
Owner
State
State Highway Agency

About this bridge

State Route 71 over UP RR AMTRAK Metrolink is a concrete continuous tee beam carrying State Route 71 over UP RR AMTRAK Metrolink in Los Angeles County, California. It was built in 1939, so it is 86 years old, older 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 6 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 69,500 vehicles a day, projected to reach 157,883 by 2043. The structure is 233 ft (71 m) long and 62 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesState Route 71
CrossesUP RR AMTRAK Metrolink
Location07-LA-071-1.20-POM
RouteState Highway 71
CountyLos Angeles County
StateCalifornia
Coordinates34.05833, -117.78606
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 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 geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment9: Superior to present desirable criteria
Operating rating28.5 US tons
Inventory rating21.8 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans7
Design loadHS 15
Structure length233 ft (71 m)
Longest span53 ft (16.2 m)
Deck width62 ft (18.9 m)
Roadway width52 ft (15.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic69,500 (2021)
Projected traffic157,883 by 2043
Trucks0%
Lanes on structure4
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 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 over UP RR AMTRAK Metrolink built?

It was built in 1939, making it 86 years old in 2025.

What condition is State Route 71 over UP RR AMTRAK Metrolink 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 over UP RR AMTRAK Metrolink carry?

About 69,500 vehicles per day (2021 count).

How long is State Route 71 over UP RR AMTRAK Metrolink?

The structure is 233 ft (71 m) long with a longest span of 53 ft (16.2 m) and a deck 62 ft wide.

Who owns State Route 71 over UP RR AMTRAK Metrolink?

It is owned by the State Highway Agency.