US Bridges

Azusa Cyn RD over Big Dalton Wash

Good

Los Angeles County, California · 0.3MI N/O Sn Bernadino RD · Structure no. 53C0671

Built
1959
66 years old
Condition
Good
inspected April 2021
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
84 ft
1 main span
Daily traffic
12,834
2012 count
Owner
City
City or Municipal Highway Agency

About this bridge

Azusa Cyn RD over Big Dalton Wash is a prestressed concrete stringer/multi-beam or girder carrying Azusa Cyn RD over Big Dalton Wash in Los Angeles County, California. It was built in 1959, so it is 66 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 12,834 vehicles a day, roughly 4% of them trucks, projected to reach 14,759 by 2041. The structure is 84 ft (25.5 m) long and 72 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesAzusa Cyn RD
CrossesBig Dalton Wash
Location0.3MI N/O Sn Bernadino RD
RouteCity Street 0Q909
Coordinates34.09367, -117.94292
Functional classUrban Minor 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 inspectionApril 2021
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 rating87.2 US tons
Inventory rating51 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length84 ft (25.5 m)
Longest span80 ft (24.4 m)
Deck width72 ft (21.9 m)
Roadway width60 ft (18.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,834 (2012)
Projected traffic14,759 by 2041
Trucks4%
Lanes on structure4
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 Azusa Cyn RD over Big Dalton Wash built?

It was built in 1959, making it 66 years old in 2025.

What condition is Azusa Cyn RD over Big Dalton 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 April 2021.

How much traffic does Azusa Cyn RD over Big Dalton Wash carry?

About 12,834 vehicles per day (2012 count), of which roughly 4% are trucks.

How long is Azusa Cyn RD over Big Dalton Wash?

The structure is 84 ft (25.5 m) long with a longest span of 80 ft (24.4 m) and a deck 72 ft wide.

Who owns Azusa Cyn RD over Big Dalton Wash?

It is owned by the City or Municipal Highway Agency.