US Bridges

20th ST W over Amargosa Drn

Fair

Los Angeles County, California · 200FT E/O SR-14 Fwy · Structure no. 53C0871

Built
1972
53 years old
Condition
Fair
inspected May 2024
Type
Culvert
Concrete
Length
101 ft
7 main spans
Daily traffic
26,800
2014 count
Owner
City
City or Municipal Highway Agency

About this bridge

20th ST W over Amargosa Drn is a concrete culvert carrying 20th ST W over Amargosa Drn 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 26,800 vehicles a day, roughly 4% of them trucks, projected to reach 40,810 by 2044. The structure is 101 ft (30.8 m) long and 116 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
Carries20th ST W
CrossesAmargosa Drn
Location200FT E/O SR-14 Fwy
RouteCity Street 0Q043
CountyLos Angeles County
StateCalifornia
Coordinates34.68438, -118.16551
Functional classUrban Minor 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 protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum 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 spans7
Design loadUnknown
Structure length101 ft (30.8 m)
Longest span12 ft (3.7 m)
Deck width116 ft (35.4 m)
Roadway width84 ft (25.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic26,800 (2014)
Projected traffic40,810 by 2044
Trucks4%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

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 20th ST W over Amargosa Drn built?

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

What condition is 20th ST W over Amargosa Drn 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 May 2024.

How much traffic does 20th ST W over Amargosa Drn carry?

About 26,800 vehicles per day (2014 count), of which roughly 4% are trucks.

How long is 20th ST W over Amargosa Drn?

The structure is 101 ft (30.8 m) long with a longest span of 12 ft (3.7 m) and a deck 116 ft wide.

Who owns 20th ST W over Amargosa Drn?

It is owned by the City or Municipal Highway Agency.