US Bridges

Crags DR over Triunfo Crk

Good

Los Angeles County, California · 0.3MI S/O Mulholland HWY · Structure no. 53C1004

Built
1951
74 years old
Condition
Good
inspected December 2022
Type
Tee Beam
Concrete Continuous
Length
164 ft
3 main spans
Daily traffic
1,020
2017 count
Owner
County
County Highway Agency

About this bridge

Crags DR over Triunfo Crk is a concrete continuous tee beam carrying Crags DR over Triunfo Crk in Los Angeles County, California. It was built in 1951, 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 1,020 vehicles a day, roughly 1% of them trucks, projected to reach 1,122 by 2041. The structure is 164 ft (50 m) long and 27 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesCrags DR
CrossesTriunfo Crk
Location0.3MI S/O Mulholland HWY
RouteCounty Highway 0
Coordinates34.10551, -118.76433
Functional classRural Local

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2022
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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating61.8 US tons
Inventory rating36.8 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length164 ft (50 m)
Longest span66 ft (20.1 m)
Deck width27 ft (8.3 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,020 (2017)
Projected traffic1,122 by 2041
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed123.7 mi (199 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 Crags DR over Triunfo Crk built?

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

What condition is Crags DR over Triunfo Crk 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 December 2022.

How much traffic does Crags DR over Triunfo Crk carry?

About 1,020 vehicles per day (2017 count), of which roughly 1% are trucks.

How long is Crags DR over Triunfo Crk?

The structure is 164 ft (50 m) long with a longest span of 66 ft (20.1 m) and a deck 27 ft wide.

Who owns Crags DR over Triunfo Crk?

It is owned by the County Highway Agency.