US Bridges

Olive ST-S405 Onrp over S405-CENTURY Blvd Off-Rp

Good

Los Angeles County, California · 07-LA-405-22.55-ING · Structure no. 53 1521K

Built
1963
62 years old
Condition
Good
inspected January 2025
Type
Slab
Concrete
Length
142 ft
1 main span
Daily traffic
11,200
2019 count
Owner
State
State Highway Agency

About this bridge

Olive ST-S405 Onrp over S405-CENTURY Blvd Off-Rp is a concrete slab carrying Olive ST-S405 Onrp over S405-CENTURY Blvd Off-Rp in Los Angeles County, California. It was built in 1963, so it is 62 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 11,200 vehicles a day, roughly 5% of them trucks, projected to reach 13,140 by 2042. The structure is 142 ft (43.3 m) long and 36 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesOlive ST-S405 Onrp
CrossesS405-CENTURY Blvd Off-Rp
Location07-LA-405-22.55-ING
RouteCity Street 0
Coordinates33.9498, -118.36925
Functional classUrban Principal Arterial - Interstate

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.
Substructure8 Very GoodNo problems noted.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating78.9 US tons
Inventory rating47.5 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length142 ft (43.3 m)
Longest span128 ft (39 m)
Deck width36 ft (11.1 m)
Roadway width33 ft (10.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,200 (2019)
Projected traffic13,140 by 2042
Trucks5%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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 Olive ST-S405 Onrp over S405-CENTURY Blvd Off-Rp built?

It was built in 1963, making it 62 years old in 2025.

What condition is Olive ST-S405 Onrp over S405-CENTURY Blvd Off-Rp 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 January 2025.

How much traffic does Olive ST-S405 Onrp over S405-CENTURY Blvd Off-Rp carry?

About 11,200 vehicles per day (2019 count), of which roughly 5% are trucks.

How long is Olive ST-S405 Onrp over S405-CENTURY Blvd Off-Rp?

The structure is 142 ft (43.3 m) long with a longest span of 128 ft (39 m) and a deck 36 ft wide.

Who owns Olive ST-S405 Onrp over S405-CENTURY Blvd Off-Rp?

It is owned by the State Highway Agency.