US Bridges

Downey Road over Interstate 5

Fair

Los Angeles County, California · 07-LA-005-14.25 · Structure no. 53 0784

Built
1951
74 years old
Condition
Fair
inspected January 2025
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
213 ft
2 main spans
Daily traffic
6,500
2019 count
Owner
State
State Highway Agency

About this bridge

Downey Road over Interstate 5 is a concrete continuous box beam or girders - multiple carrying Downey Road over Interstate 5 in Los Angeles County, California. It was built in 1951, so it is 74 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 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 6,500 vehicles a day, roughly 1% of them trucks, projected to reach 11,390 by 2045. The structure is 213 ft (64.9 m) long and 52 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesDowney Road
CrossesInterstate 5
Location07-LA-005-14.25
RouteCounty Highway 0
CountyLos Angeles County
StateCalifornia
Coordinates34.01928, -118.17997
Functional classUrban Minor 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
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 inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment9: Superior to present desirable criteria
Operating rating38.9 US tons
Inventory rating30 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length213 ft (64.9 m)
Longest span70 ft (21.3 m)
Deck width52 ft (16 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,500 (2019)
Projected traffic11,390 by 2045
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

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 Downey Road over Interstate 5 built?

It was built in 1951, making it 74 years old in 2025.

What condition is Downey Road over Interstate 5 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 January 2025.

How much traffic does Downey Road over Interstate 5 carry?

About 6,500 vehicles per day (2019 count), of which roughly 1% are trucks.

How long is Downey Road over Interstate 5?

The structure is 213 ft (64.9 m) long with a longest span of 70 ft (21.3 m) and a deck 52 ft wide.

Who owns Downey Road over Interstate 5?

It is owned by the State Highway Agency.