US Bridges

I 5 over 4th Street

Fair

Los Angeles County, California · 07-LA-005-17.56-LA · Structure no. 53 1304

Built
1960
65 years old
Condition
Fair
inspected March 2023
Type
Box Beam or Girders - Multiple
Concrete
Length
85 ft
1 main span
Daily traffic
235,620
2022 count
Owner
State
State Highway Agency

About this bridge

I 5 over 4th Street is a concrete box beam or girders - multiple carrying I 5 over 4th Street in Los Angeles County, California. It was built in 1960, so it is 65 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 235,620 vehicles a day, roughly 7% of them trucks, projected to reach 263,388 by 2041. The structure is 85 ft (25.9 m) long and 138 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI 5
Crosses4th Street
Location07-LA-005-17.56-LA
RouteInterstate 5
CountyLos Angeles County
StateCalifornia
Coordinates34.04284, -118.21705
Functional classUrban Principal Arterial - Interstate

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 inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52.1 US tons
Inventory rating40 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length85 ft (25.9 m)
Longest span84 ft (25.6 m)
Deck width138 ft (42 m)
Roadway width132 ft (40.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic235,620 (2022)
Projected traffic263,388 by 2041
Trucks7%
Lanes on structure10
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
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 statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I 5 over 4th Street built?

It was built in 1960, making it 65 years old in 2025.

What condition is I 5 over 4th Street 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 March 2023.

How much traffic does I 5 over 4th Street carry?

About 235,620 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is I 5 over 4th Street?

The structure is 85 ft (25.9 m) long with a longest span of 84 ft (25.6 m) and a deck 138 ft wide.

Who owns I 5 over 4th Street?

It is owned by the State Highway Agency.