US Bridges

Coldwater Canyon over Los Angeles River

Good

Los Angeles County, California · 0.7 MI S/O US 101 · Structure no. 53C1138

Built
1951
74 years old, rebuilt 1967
Condition
Good
inspected March 2024
Type
Box Beam or Girders - Multiple
Concrete
Length
67 ft
1 main span
Daily traffic
25,040
2018 count
Owner
City
City or Municipal Highway Agency

About this bridge

Coldwater Canyon over Los Angeles River is a concrete box beam or girders - multiple carrying Coldwater Canyon over Los Angeles River in Los Angeles County, California. It was built in 1951 and reconstructed in 1967, so it is 74 years old, older 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 25,040 vehicles a day, roughly 2% of them trucks, projected to reach 39,242 by 2044. The structure is 67 ft (20.4 m) long and 80 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesColdwater Canyon
CrossesLos Angeles River
Location0.7 MI S/O US 101
RouteCity Street 0
Coordinates34.14653, -118.41366
Functional classUrban Other Principal Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionMarch 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110 US tons
Inventory rating81.5 US tons

Structure

MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length67 ft (20.4 m)
Longest span60 ft (18.3 m)
Deck width80 ft (24.3 m)
Roadway width64 ft (19.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25,040 (2018)
Projected traffic39,242 by 2044
Trucks2%
Lanes on structure3
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 Coldwater Canyon over Los Angeles River built?

It was built in 1951, making it 74 years old in 2025. It was reconstructed in 1967.

What condition is Coldwater Canyon over Los Angeles River 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 March 2024.

How much traffic does Coldwater Canyon over Los Angeles River carry?

About 25,040 vehicles per day (2018 count), of which roughly 2% are trucks.

How long is Coldwater Canyon over Los Angeles River?

The structure is 67 ft (20.4 m) long with a longest span of 60 ft (18.3 m) and a deck 80 ft wide.

Who owns Coldwater Canyon over Los Angeles River?

It is owned by the City or Municipal Highway Agency.