US Bridges

Interstate 10 over Big Dalton Wash

Good

Los Angeles County, California · 07-LA-010-32.93-BWP · Structure no. 53 0112

Built
1955
70 years old, rebuilt 2012
Condition
Good
inspected June 2023
Type
Box Beam or Girders - Multiple
Concrete
Length
119 ft
1 main span
Daily traffic
209,000
2018 count
Owner
State
State Highway Agency

About this bridge

Interstate 10 over Big Dalton Wash is a concrete box beam or girders - multiple carrying Interstate 10 over Big Dalton Wash in Los Angeles County, California. It was built in 1955 and reconstructed in 2012, so it is 70 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 209,000 vehicles a day, projected to reach 271,477 by 2040. The structure is 119 ft (36.2 m) long and 163 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesInterstate 10
CrossesBig Dalton Wash
Location07-LA-010-32.93-BWP
RouteInterstate 10
Coordinates34.06892, -117.96984
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.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating110 US tons
Inventory rating84.7 US tons

Structure

MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length119 ft (36.2 m)
Longest span119 ft (36.2 m)
Deck width163 ft (49.8 m)
Roadway width157 ft (48 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic209,000 (2018)
Projected traffic271,477 by 2040
Trucks0%
Lanes on structure8
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Interstate 10 over Big Dalton Wash built?

It was built in 1955, making it 70 years old in 2025. It was reconstructed in 2012.

What condition is Interstate 10 over Big Dalton Wash 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 Interstate 10 over Big Dalton Wash carry?

About 209,000 vehicles per day (2018 count).

How long is Interstate 10 over Big Dalton Wash?

The structure is 119 ft (36.2 m) long with a longest span of 119 ft (36.2 m) and a deck 163 ft wide.

Who owns Interstate 10 over Big Dalton Wash?

It is owned by the State Highway Agency.