US Bridges

Century Blvd over Route 1

Good

Los Angeles County, California · 07-LA-001-26.91-LA · Structure no. 53 1834L

Built
1966
59 years old
Condition
Good
inspected July 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
204 ft
2 main spans
Daily traffic
18,000
2017 count
Owner
State
State Highway Agency

About this bridge

Century Blvd over Route 1 is a prestressed concrete stringer/multi-beam or girder carrying Century Blvd over Route 1 in Los Angeles County, California. It was built in 1966, so it is 59 years old, older than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 18,000 vehicles a day, roughly 1% of them trucks, projected to reach 29,050 by 2040. The structure is 204 ft (62.2 m) long and 58 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesCentury Blvd
CrossesRoute 1
Location07-LA-001-26.91-LA
RouteCity Street 0L119
Coordinates33.9447, -118.39653
Functional classUrban Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating41.4 US tons
Inventory rating29.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadHS 20
Structure length204 ft (62.2 m)
Longest span72 ft (21.9 m)
Deck width58 ft (17.7 m)
Roadway width56 ft (17.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18,000 (2017)
Projected traffic29,050 by 2040
Trucks1%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
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 Century Blvd over Route 1 built?

It was built in 1966, making it 59 years old in 2025.

What condition is Century Blvd over Route 1 in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in July 2023.

How much traffic does Century Blvd over Route 1 carry?

About 18,000 vehicles per day (2017 count), of which roughly 1% are trucks.

How long is Century Blvd over Route 1?

The structure is 204 ft (62.2 m) long with a longest span of 72 ft (21.9 m) and a deck 58 ft wide.

Who owns Century Blvd over Route 1?

It is owned by the State Highway Agency.