US Bridges

Interstate 5 SB over The Old Road

Fair

Los Angeles County, California · 07-LA-005S-C45.86 · Structure no. 53 0996L

Built
1955
70 years old
Condition
Fair
inspected August 2023
Type
Box Beam or Girders - Multiple
Concrete
Length
76 ft
1 main span
Daily traffic
100,687
2018 count
Owner
State
State Highway Agency

About this bridge

Interstate 5 SB over The Old Road is a concrete box beam or girders - multiple carrying Interstate 5 SB over The Old Road in Los Angeles County, California. It was built in 1955, so it is 70 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 100,687 vehicles a day, roughly 8% of them trucks, projected to reach 126,374 by 2041. The structure is 76 ft (23.1 m) long and 86 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

Location

Open in Google Maps
CarriesInterstate 5 SB
CrossesThe Old Road
Location07-LA-005S-C45.86
RouteInterstate 5
CountyLos Angeles County
StateCalifornia
Coordinates34.33636, -118.51004
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 2023
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating37.1 US tons
Inventory rating26.1 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length76 ft (23.1 m)
Longest span74 ft (22.6 m)
Deck width86 ft (26.1 m)
Roadway width37 ft (11.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100,687 (2018)
Projected traffic126,374 by 2041
Trucks8%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed11.2 mi (18 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 Interstate 5 SB over The Old Road built?

It was built in 1955, making it 70 years old in 2025.

What condition is Interstate 5 SB over The Old Road 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 August 2023.

How much traffic does Interstate 5 SB over The Old Road carry?

About 100,687 vehicles per day (2018 count), of which roughly 8% are trucks.

How long is Interstate 5 SB over The Old Road?

The structure is 76 ft (23.1 m) long with a longest span of 74 ft (22.6 m) and a deck 86 ft wide.

Who owns Interstate 5 SB over The Old Road?

It is owned by the State Highway Agency.