US Bridges

Busway WB I-10 over County Hospital Drain

Good

Los Angeles County, California · 07-LA-010S-17.64-LA · Structure no. 53 2621M

Built
1974
51 years old
Condition
Good
inspected June 2023
Type
Culvert
Concrete
Length
24 ft
1 main span
Daily traffic
30,500
2016 count
Owner
State
State Highway Agency

About this bridge

Busway WB I-10 over County Hospital Drain is a concrete culvert carrying Busway WB I-10 over County Hospital Drain in Los Angeles County, California. It was built in 1974, so it is 51 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 30,500 vehicles a day, roughly 6% of them trucks, projected to reach 30,500 by 2040. The structure is 24 ft (7.3 m) long. If it were closed, the detour would be 0.6 mi (1 km).

CarriesBusway WB I-10
CrossesCounty Hospital Drain
Location07-LA-010S-17.64-LA
RouteInterstate 10
Coordinates34.05336, -118.22328
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 inspectionJune 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadUnknown
Structure length24 ft (7.3 m)
Longest span24 ft (7.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30,500 (2016)
Projected traffic30,500 by 2040
Trucks6%
Lanes on structure2
Traffic directionTwo-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 County Hospital Drain built?

It was built in 1974, making it 51 years old in 2025.

What condition is Busway WB I-10 over County Hospital 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 June 2023.

How much traffic does Busway WB I-10 over County Hospital Drain carry?

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

How long is Busway WB I-10 over County Hospital Drain?

The structure is 24 ft (7.3 m) long with a longest span of 24 ft (7.3 m).

Who owns Busway WB I-10 over County Hospital Drain?

It is owned by the State Highway Agency.