US Bridges

State Route 1 over Dominguez Channel

Fair

Los Angeles County, California · 07-LA-001-8.62-LA · Structure no. 53 0719

Built
1948
77 years old
Condition
Fair
inspected December 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
264 ft
3 main spans
Daily traffic
26,500
2023 count
Owner
State
State Highway Agency

About this bridge

State Route 1 over Dominguez Channel is a steel continuous stringer/multi-beam or girder carrying State Route 1 over Dominguez Channel in Los Angeles County, California. It was built in 1948, so it is 77 years old, older 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 6 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 26,500 vehicles a day, roughly 11% of them trucks, projected to reach 36,500 by 2043. The structure is 264 ft (80.5 m) long and 107 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesState Route 1
CrossesDominguez Channel
Location07-LA-001-8.62-LA
RouteState Highway 1
CountyLos Angeles County
StateCalifornia
Coordinates33.79168, -118.23025
Functional classUrban Other Principal 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating41.8 US tons
Inventory rating32.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length264 ft (80.5 m)
Longest span99 ft (30.2 m)
Deck width107 ft (32.5 m)
Roadway width88 ft (26.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic26,500 (2023)
Projected traffic36,500 by 2043
Trucks11%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was State Route 1 over Dominguez Channel built?

It was built in 1948, making it 77 years old in 2025.

What condition is State Route 1 over Dominguez Channel 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 December 2023.

How much traffic does State Route 1 over Dominguez Channel carry?

About 26,500 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is State Route 1 over Dominguez Channel?

The structure is 264 ft (80.5 m) long with a longest span of 99 ft (30.2 m) and a deck 107 ft wide.

Who owns State Route 1 over Dominguez Channel?

It is owned by the State Highway Agency.