US Bridges

I 5 Truck over SR 14 (sierra Hwy)

Fair

Los Angeles County, California · 07-LA-005S-C45.49-LA · Structure no. 53 0848

Built
1955
70 years old, rebuilt 1984
Condition
Fair
inspected August 2023
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
246 ft
3 main spans
Daily traffic
209,925
2018 count
Owner
State
State Highway Agency

About this bridge

I 5 Truck over SR 14 (sierra Hwy) is a concrete continuous box beam or girders - multiple carrying I 5 Truck over SR 14 (sierra Hwy) in Los Angeles County, California. It was built in 1955 and reconstructed in 1984, 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 209,925 vehicles a day, roughly 30% of them trucks, projected to reach 293,965 by 2041. The structure is 246 ft (75 m) long and 86 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesI 5 Truck
CrossesSR 14 (sierra Hwy)
Location07-LA-005S-C45.49-LA
RouteInterstate 5
CountyLos Angeles County
StateCalifornia
Coordinates34.33364, -118.50502
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 geometry9: Superior to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating82.3 US tons
Inventory rating49.9 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length246 ft (75 m)
Longest span100 ft (30.5 m)
Deck width86 ft (26.2 m)
Roadway width80 ft (24.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic209,925 (2018)
Projected traffic293,965 by 2041
Trucks30%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed6.8 mi (11 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkNon-Interstate 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 Truck over SR 14 (sierra Hwy) built?

It was built in 1955, making it 70 years old in 2025. It was reconstructed in 1984.

What condition is I 5 Truck over SR 14 (sierra Hwy) 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 I 5 Truck over SR 14 (sierra Hwy) carry?

About 209,925 vehicles per day (2018 count), of which roughly 30% are trucks.

How long is I 5 Truck over SR 14 (sierra Hwy)?

The structure is 246 ft (75 m) long with a longest span of 100 ft (30.5 m) and a deck 86 ft wide.

Who owns I 5 Truck over SR 14 (sierra Hwy)?

It is owned by the State Highway Agency.