US Bridges

Juanita Ave over San Dimas Wash

Good

Los Angeles County, California · 0.9MI E/O Grand Ave · Structure no. 53C0708

Built
1960
65 years old
Condition
Good
inspected January 2025
Type
Slab
Concrete
Length
32 ft
1 main span
Daily traffic
2,972
2017 count
Owner
City
City or Municipal Highway Agency

About this bridge

Juanita Ave over San Dimas Wash is a concrete slab carrying Juanita Ave over San Dimas Wash in Los Angeles County, California. It was built in 1960, so it is 65 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 2,972 vehicles a day, roughly 2% of them trucks, projected to reach 3,200 by 2045. The structure is 32 ft (9.8 m) long and 65 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesJuanita Ave
CrossesSan Dimas Wash
Location0.9MI E/O Grand Ave
RouteCity Street 0Q917
Coordinates34.11022, -117.85842
Functional classUrban Collector

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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionJanuary 2025
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating92.5 US tons
Inventory rating55.3 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length32 ft (9.8 m)
Longest span30 ft (9 m)
Deck width65 ft (19.9 m)
Roadway width40 ft (12.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,972 (2017)
Projected traffic3,200 by 2045
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 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 Juanita Ave over San Dimas Wash built?

It was built in 1960, making it 65 years old in 2025.

What condition is Juanita Ave over San Dimas 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 January 2025.

How much traffic does Juanita Ave over San Dimas Wash carry?

About 2,972 vehicles per day (2017 count), of which roughly 2% are trucks.

How long is Juanita Ave over San Dimas Wash?

The structure is 32 ft (9.8 m) long with a longest span of 30 ft (9 m) and a deck 65 ft wide.

Who owns Juanita Ave over San Dimas Wash?

It is owned by the City or Municipal Highway Agency.