US Bridges

Lemon Ave over Diamond Bar Crk

Good

Los Angeles County, California · 0.1MI S/O Currier RD · Structure no. 53C1849

Built
1984
41 years old
Condition
Good
inspected May 2021
Type
Culvert
Concrete
Length
22 ft
2 main spans
Daily traffic
20,286
2012 count
Owner
City
City or Municipal Highway Agency

About this bridge

Lemon Ave over Diamond Bar Crk is a concrete culvert carrying Lemon Ave over Diamond Bar Crk in Los Angeles County, California. It was built in 1984, so it is 41 years old, younger 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 20,286 vehicles a day, roughly 4% of them trucks, projected to reach 24,344 by 2041. The structure is 22 ft (6.7 m) long and 100 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesLemon Ave
CrossesDiamond Bar Crk
Location0.1MI S/O Currier RD
RouteCity Street 0L532
CountyLos Angeles County
StateCalifornia
Coordinates34.00444, -117.85513
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
Channel and channel protection9 ExcellentNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionMay 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 alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadUnknown
Structure length22 ft (6.7 m)
Longest span10 ft (3 m)
Deck width100 ft (30.4 m)
Roadway width80 ft (24.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20,286 (2012)
Projected traffic24,344 by 2041
Trucks4%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 Lemon Ave over Diamond Bar Crk built?

It was built in 1984, making it 41 years old in 2025.

What condition is Lemon Ave over Diamond Bar 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 May 2021.

How much traffic does Lemon Ave over Diamond Bar Crk carry?

About 20,286 vehicles per day (2012 count), of which roughly 4% are trucks.

How long is Lemon Ave over Diamond Bar Crk?

The structure is 22 ft (6.7 m) long with a longest span of 10 ft (3 m) and a deck 100 ft wide.

Who owns Lemon Ave over Diamond Bar Crk?

It is owned by the City or Municipal Highway Agency.