US Bridges

Interstate 710 over Drain

Fair

Los Angeles County, California · 07-LA-710-R27.02-MONP · Structure no. 53 1904

Built
1965
60 years old
Condition
Fair
inspected September 2022
Type
Culvert
Concrete
Length
34 ft
2 main spans
Daily traffic
45,500
2017 count
Owner
State
State Highway Agency

About this bridge

Interstate 710 over Drain is a concrete culvert carrying Interstate 710 over Drain in Los Angeles County, California. It was built in 1965, so it is 60 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 45,500 vehicles a day, roughly 5% of them trucks, projected to reach 90,845 by 2039. The structure is 34 ft (10.4 m) long. If it were closed, the detour would be 1.2 mi (2 km).

CarriesInterstate 710
CrossesDrain
Location07-LA-710-R27.02-MONP
RouteState Highway 710
Coordinates34.06807, -118.16261
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length34 ft (10.4 m)
Longest span15 ft (4.6 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic45,500 (2017)
Projected traffic90,845 by 2039
Trucks5%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 Interstate 710 over Drain built?

It was built in 1965, making it 60 years old in 2025.

What condition is Interstate 710 over Drain 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 September 2022.

How much traffic does Interstate 710 over Drain carry?

About 45,500 vehicles per day (2017 count), of which roughly 5% are trucks.

How long is Interstate 710 over Drain?

The structure is 34 ft (10.4 m) long with a longest span of 15 ft (4.6 m).

Who owns Interstate 710 over Drain?

It is owned by the State Highway Agency.