US Bridges

Lassen ST over Granada Channel

Fair

Los Angeles County, California · 0.1 MI W. Havenhurst Ave · Structure no. 53C1759

Built
1972
53 years old
Condition
Fair
inspected October 2024
Type
Culvert
Concrete Continuous
Length
22 ft
2 main spans
Daily traffic
16,500
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Lassen ST over Granada Channel is a concrete continuous culvert carrying Lassen ST over Granada Channel in Los Angeles County, California. It was built in 1972, so it is 53 years old, younger 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 16,500 vehicles a day, roughly 1% of them trucks, projected to reach 18,858 by 2045. The structure is 22 ft (6.7 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesLassen ST
CrossesGranada Channel
Location0.1 MI W. Havenhurst Ave
RouteCity Street 0
CountyLos Angeles County
StateCalifornia
Coordinates34.25004, -118.49521
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
Channel and channel protection8 Very GoodNo problems noted.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44.6 US tons
Inventory rating26.8 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadH 15
Structure length22 ft (6.7 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,500 (2020)
Projected traffic18,858 by 2045
Trucks1%
Lanes on structure5
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

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Lassen ST over Granada Channel built?

It was built in 1972, making it 53 years old in 2025.

What condition is Lassen ST over Granada 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 October 2024.

How much traffic does Lassen ST over Granada Channel carry?

About 16,500 vehicles per day (2020 count), of which roughly 1% are trucks.

How long is Lassen ST over Granada Channel?

The structure is 22 ft (6.7 m) long with a longest span of 10 ft (3 m).

Who owns Lassen ST over Granada Channel?

It is owned by the City or Municipal Highway Agency.