US Bridges

Carson ST-N605 over N605-CARSON ST Off-Ramp

Good

Los Angeles County, California · 07-LA-605-R1.63-LBCH · Structure no. 53 2883S

Built
2001
24 years old
Condition
Good
inspected June 2023
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
170 ft
2 main spans
Daily traffic
1,000
2021 count
Owner
State
State Highway Agency

About this bridge

Carson ST-N605 over N605-CARSON ST Off-Ramp is a concrete continuous box beam or girders - multiple carrying Carson ST-N605 over N605-CARSON ST Off-Ramp in Los Angeles County, California. It was built in 2001, so it is 24 years old, younger 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 1,000 vehicles a day, roughly 2% of them trucks, projected to reach 1,572 by 2042. The structure is 170 ft (51.9 m) long and 40 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesCarson ST-N605
CrossesN605-CARSON ST Off-Ramp
Location07-LA-605-R1.63-LBCH
RouteState Highway 605
CountyLos Angeles County
StateCalifornia
Coordinates33.83049, -118.0828
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 inspectionJune 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length170 ft (51.9 m)
Longest span98 ft (29.9 m)
Deck width40 ft (12.3 m)
Roadway width37 ft (11.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,000 (2021)
Projected traffic1,572 by 2042
Trucks2%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate 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 Carson ST-N605 over N605-CARSON ST Off-Ramp built?

It was built in 2001, making it 24 years old in 2025.

What condition is Carson ST-N605 over N605-CARSON ST Off-Ramp 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 June 2023.

How much traffic does Carson ST-N605 over N605-CARSON ST Off-Ramp carry?

About 1,000 vehicles per day (2021 count), of which roughly 2% are trucks.

How long is Carson ST-N605 over N605-CARSON ST Off-Ramp?

The structure is 170 ft (51.9 m) long with a longest span of 98 ft (29.9 m) and a deck 40 ft wide.

Who owns Carson ST-N605 over N605-CARSON ST Off-Ramp?

It is owned by the State Highway Agency.