US Bridges

Busway WB I-10 over City Terrace Drain

Good

Los Angeles County, California · 07-LA-010S-17.65-LA · Structure no. 53 2622M

Built
1942
83 years old
Condition
Good
inspected January 2024
Type
Culvert
Concrete
Length
25 ft
1 main span
Daily traffic
30,500
2016 count
Owner
State
State Highway Agency

About this bridge

Busway WB I-10 over City Terrace Drain is a concrete culvert carrying Busway WB I-10 over City Terrace Drain in Los Angeles County, California. It was built in 1942, so it is 83 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 30,500 vehicles a day, roughly 6% of them trucks, projected to reach 31,115 by 2046. The structure is 25 ft (7.6 m) long and 10 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesBusway WB I-10
CrossesCity Terrace Drain
Location07-LA-010S-17.65-LA
RouteInterstate 10
Coordinates34.05333, -118.22333
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
Channel and channel protection9 ExcellentNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating30 US tons
Inventory rating17.9 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadUnknown
Structure length25 ft (7.6 m)
Longest span25 ft (7.6 m)
Deck width10 ft (3 m)
Roadway width10 ft (3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30,500 (2016)
Projected traffic31,115 by 2046
Trucks6%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a toll 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 Busway WB I-10 over City Terrace Drain built?

It was built in 1942, making it 83 years old in 2025.

What condition is Busway WB I-10 over City Terrace Drain 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 January 2024.

How much traffic does Busway WB I-10 over City Terrace Drain carry?

About 30,500 vehicles per day (2016 count), of which roughly 6% are trucks.

How long is Busway WB I-10 over City Terrace Drain?

The structure is 25 ft (7.6 m) long with a longest span of 25 ft (7.6 m) and a deck 10 ft wide.

Who owns Busway WB I-10 over City Terrace Drain?

It is owned by the State Highway Agency.