US Bridges

Carson ST over Alameda ST / SPRR

Fair

Los Angeles County, California · 0.4MI W/O Santa Fe Ave · Structure no. 53C2005

Built
1995
30 years old
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
535 ft
5 main spans
Daily traffic
13,700
2014 count
Owner
City
City or Municipal Highway Agency

About this bridge

Carson ST over Alameda ST / SPRR is a prestressed concrete continuous stringer/multi-beam or girder carrying Carson ST over Alameda ST / SPRR in Los Angeles County, California. It was built in 1995, so it is 30 years old, younger 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 13,700 vehicles a day, roughly 10% of them trucks, projected to reach 16,400 by 2044. The structure is 535 ft (163.1 m) long and 68 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesCarson ST
CrossesAlameda ST / SPRR
Location0.4MI W/O Santa Fe Ave
RouteCity Street 0
CountyLos Angeles County
StateCalifornia
Coordinates33.83195, -118.22697
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadUnknown
Structure length535 ft (163.1 m)
Longest span124 ft (37.9 m)
Deck width68 ft (20.7 m)
Roadway width56 ft (17.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,700 (2014)
Projected traffic16,400 by 2044
Trucks10%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway and railroad
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 over Alameda ST / SPRR built?

It was built in 1995, making it 30 years old in 2025.

What condition is Carson ST over Alameda ST / SPRR 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 June 2024.

How much traffic does Carson ST over Alameda ST / SPRR carry?

About 13,700 vehicles per day (2014 count), of which roughly 10% are trucks.

How long is Carson ST over Alameda ST / SPRR?

The structure is 535 ft (163.1 m) long with a longest span of 124 ft (37.9 m) and a deck 68 ft wide.

Who owns Carson ST over Alameda ST / SPRR?

It is owned by the City or Municipal Highway Agency.