US Bridges

Lancaster RD over Unnamed Wash

Good

Los Angeles County, California · 0.1MI W/O 190th ST W · Structure no. 53C1863

Built
1976
49 years old
Condition
Good
inspected May 2024
Type
Culvert
Steel
Length
22 ft
4 main spans
Daily traffic
408
2014 count
Owner
County
County Highway Agency

About this bridge

Lancaster RD over Unnamed Wash is a steel culvert carrying Lancaster RD over Unnamed Wash in Los Angeles County, California. It was built in 1976, so it is 49 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 408 vehicles a day, roughly 2% of them trucks, projected to reach 408 by 2044. The structure is 22 ft (6.7 m) long and 46 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

CarriesLancaster RD
CrossesUnnamed Wash
Location0.1MI W/O 190th ST W
RouteCounty Highway OQ006
Coordinates34.73888, -118.46896
Functional classRural Major Collector

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110 US tons
Inventory rating110 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans4
Design loadUnknown
Structure length22 ft (6.7 m)
Longest span4 ft (1.2 m)
Deck width46 ft (14 m)
Roadway width30 ft (9.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic408 (2014)
Projected traffic408 by 2044
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Lancaster RD over Unnamed Wash built?

It was built in 1976, making it 49 years old in 2025.

What condition is Lancaster RD over Unnamed Wash 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 May 2024.

How much traffic does Lancaster RD over Unnamed Wash carry?

About 408 vehicles per day (2014 count), of which roughly 2% are trucks.

How long is Lancaster RD over Unnamed Wash?

The structure is 22 ft (6.7 m) long with a longest span of 4 ft (1.2 m) and a deck 46 ft wide.

Who owns Lancaster RD over Unnamed Wash?

It is owned by the County Highway Agency.