US Bridges

Glendora Ave over Walnut Crk

Good

Los Angeles County, California · At Valinda Ave · Structure no. 53C0033

Built
1961
64 years old, rebuilt 1964
Condition
Good
inspected November 2021
Type
Frame
Prestressed Concrete
Length
57 ft
1 main span
Daily traffic
9,348
2014 count
Owner
City
City or Municipal Highway Agency

About this bridge

Glendora Ave over Walnut Crk is a prestressed concrete frame carrying Glendora Ave over Walnut Crk in Los Angeles County, California. It was built in 1961 and reconstructed in 1964, so it is 64 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 9,348 vehicles a day, roughly 1% of them trucks, projected to reach 10,751 by 2042. The structure is 57 ft (17.3 m) long and 160 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesGlendora Ave
CrossesWalnut Crk
LocationAt Valinda Ave
RouteCity Street 0Q911
Coordinates34.06695, -117.92547
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.
Substructure7 GoodSome minor problems.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionNovember 2021
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 alignment7: Better than present minimum criteria
Operating rating62.8 US tons
Inventory rating37.8 US tons

Structure

Structure typeFrame
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length57 ft (17.3 m)
Longest span50 ft (15.2 m)
Deck width160 ft (48.8 m)
Roadway width80 ft (24.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,348 (2014)
Projected traffic10,751 by 2042
Trucks1%
Lanes on structure5
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 Glendora Ave over Walnut Crk built?

It was built in 1961, making it 64 years old in 2025. It was reconstructed in 1964.

What condition is Glendora Ave over Walnut 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 November 2021.

How much traffic does Glendora Ave over Walnut Crk carry?

About 9,348 vehicles per day (2014 count), of which roughly 1% are trucks.

How long is Glendora Ave over Walnut Crk?

The structure is 57 ft (17.3 m) long with a longest span of 50 ft (15.2 m) and a deck 160 ft wide.

Who owns Glendora Ave over Walnut Crk?

It is owned by the City or Municipal Highway Agency.