US Bridges

Columbia Way over Unnamed Wash

Fair

Los Angeles County, California · 200FT E/O Sierra HWY · Structure no. 53C1049

Built
1950
75 years old
Condition
Fair
inspected May 2024
Type
Culvert
Steel
Length
24 ft
4 main spans
Daily traffic
18,616
2014 count
Owner
City
City or Municipal Highway Agency

About this bridge

Columbia Way over Unnamed Wash is a steel culvert carrying Columbia Way over Unnamed Wash in Los Angeles County, California. It was built in 1950, so it is 75 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 18,616 vehicles a day, roughly 4% of them trucks, projected to reach 22,339 by 2044. The structure is 24 ft (7.3 m) long and 100 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesColumbia Way
CrossesUnnamed Wash
Location200FT E/O Sierra HWY
RouteCity Street 0Q031
CountyLos Angeles County
StateCalifornia
Coordinates34.64573, -118.1274
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 protection6 SatisfactoryStructural elements show some minor deterioration.
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 rating110 US tons
Inventory rating110 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans4
Design loadUnknown
Structure length24 ft (7.3 m)
Longest span12 ft (3.7 m)
Deck width100 ft (30.5 m)
Roadway width67 ft (20.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18,616 (2014)
Projected traffic22,339 by 2044
Trucks4%
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 Columbia Way over Unnamed Wash built?

It was built in 1950, making it 75 years old in 2025.

What condition is Columbia Way over Unnamed Wash 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 Columbia Way over Unnamed Wash carry?

About 18,616 vehicles per day (2014 count), of which roughly 4% are trucks.

How long is Columbia Way over Unnamed Wash?

The structure is 24 ft (7.3 m) long with a longest span of 12 ft (3.7 m) and a deck 100 ft wide.

Who owns Columbia Way over Unnamed Wash?

It is owned by the City or Municipal Highway Agency.