US Bridges

N605-N5&S5 Conn over Studebaker RD-N605 On-Rp

Good

Los Angeles County, California · 07-LA-605-R9.22-DNY · Structure no. 53 1655G

Built
1965
60 years old
Condition
Good
inspected April 2023
Type
Slab
Concrete Continuous
Length
92 ft
3 main spans
Daily traffic
22,400
2021 count
Owner
State
State Highway Agency

About this bridge

N605-N5&S5 Conn over Studebaker RD-N605 On-Rp is a concrete continuous slab carrying N605-N5&S5 Conn over Studebaker RD-N605 On-Rp in Los Angeles County, California. It was built in 1965, so it is 60 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 22,400 vehicles a day, roughly 2% of them trucks, projected to reach 23,969 by 2043. The structure is 92 ft (28.1 m) long and 34 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesN605-N5&S5 Conn
CrossesStudebaker RD-N605 On-Rp
Location07-LA-605-R9.22-DNY
RouteInterstate 605
Coordinates33.93572, -118.09881
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.
Substructure7 GoodSome minor problems.
Last inspectionApril 2023
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 rating68.6 US tons
Inventory rating41.1 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length92 ft (28.1 m)
Longest span36 ft (11 m)
Deck width34 ft (10.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic22,400 (2021)
Projected traffic23,969 by 2043
Trucks2%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 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 N605-N5&S5 Conn over Studebaker RD-N605 On-Rp built?

It was built in 1965, making it 60 years old in 2025.

What condition is N605-N5&S5 Conn over Studebaker RD-N605 On-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 April 2023.

How much traffic does N605-N5&S5 Conn over Studebaker RD-N605 On-Rp carry?

About 22,400 vehicles per day (2021 count), of which roughly 2% are trucks.

How long is N605-N5&S5 Conn over Studebaker RD-N605 On-Rp?

The structure is 92 ft (28.1 m) long with a longest span of 36 ft (11 m) and a deck 34 ft wide.

Who owns N605-N5&S5 Conn over Studebaker RD-N605 On-Rp?

It is owned by the State Highway Agency.