US Bridges

Hyperion Ave over I-5

Fair

Los Angeles County, California · 07-LA-005-23.72-LA · Structure no. 53 1069

Built
1928
97 years old
Condition
Fair
inspected July 2024
Type
Arch - Deck
Concrete
Length
159 ft
1 main span
Daily traffic
22,125
2018 count
Owner
State
State Highway Agency

About this bridge

Hyperion Ave over I-5 is a concrete arch - deck carrying Hyperion Ave over I-5 in Los Angeles County, California. It was built in 1928, so it is 97 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 22,125 vehicles a day, roughly 2% of them trucks, projected to reach 25,940 by 2041. The structure is 159 ft (48.5 m) long and 70 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesHyperion Ave
CrossesI-5
Location07-LA-005-23.72-LA
RouteCity Street 0L448
CountyLos Angeles County
StateCalifornia
Coordinates34.11254, -118.26645
Functional classUrban Local

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.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating89.9 US tons
Inventory rating53.9 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length159 ft (48.5 m)
Longest span135 ft (41.1 m)
Deck width70 ft (21.3 m)
Roadway width55 ft (16.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic22,125 (2018)
Projected traffic25,940 by 2041
Trucks2%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusEligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Hyperion Ave over I-5 built?

It was built in 1928, making it 97 years old in 2025.

What condition is Hyperion Ave over I-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 July 2024.

How much traffic does Hyperion Ave over I-5 carry?

About 22,125 vehicles per day (2018 count), of which roughly 2% are trucks.

How long is Hyperion Ave over I-5?

The structure is 159 ft (48.5 m) long with a longest span of 135 ft (41.1 m) and a deck 70 ft wide.

Who owns Hyperion Ave over I-5?

It is owned by the State Highway Agency.