Lemon Ave Onramp Finally Comes To Fruition

Photo Credit: Mike Armijo

By Michael Armijo

Diamond Bar, CA – The long awaited Lemon Avenue onramps and off ramps are finally being constructed, with most of the foundation and grading done.

The cities of Diamond Bar and Industry, in cooperation with the Alameda Corridor East (ACE) Construction Authority and the California Department of Transportation District 7 (Caltrans) and the Federal Highway Administration (FHWA), started constructing the new interchange on State Route 60 (SR-60) at Lemon Avenue. The project will improve traffic operations by providing direct access to SR-60 from the surrounding areas.

The project will construct a partial (three-legged) interchange, a WB on-ramp, and EB on-and off-ramps from Lemon Avenue. It will also permanently remove the existing EB off – and on-ramps at Brea Canyon Road. An auxiliary lane from the proposed EB on-ramp to the connector to SB SR-57 will also be constructed.

The ramps will help congestion on the local level that has been plaguing Walnut, Diamond Bar, and surrounding cities. There are many industrial sites that have lots of employees who use the existing ramps on Fairway, Golden Springs and Grand Avenue. These new ramps should help those congested areas significantly as follows:

The construction will cause some delays, as Friday, February 23, 2018 at 10:00 p.m. – Monday, February 26, 2018 at 5:00 a.m. 2 lanes of eastbound SR-60 will CLOSED between Fairway Drive and Brea Canyon Road Eastbound on-ramp from northbound Fairway Drive CLOSED.
Friday, March 2, 2018 at 10:00 p.m. – Monday, March 5, 2018 at 5:00 a.m. 2 lanes of eastbound SR-60 will be CLOSED between Fairway Drive and Brea Canyon Road Eastbound Brea Canyon Road will also be CLOSED.
Friday, March 9, 2018 at 10:00 p.m. – Monday, March 12, 2018 at 5:00 a.m. (tentative)
2 lanes of eastbound SR-60 will be CLOSED between Fairway Drive and Brea Canyon Road Eastbound Brea Canyon Road off-ramp will be CLOSED.

Consturction began last January 23, 2017 when the street was closed for street widening and center median removal. A few months earlier crews began brush clearance in preparation of the freeway ramps. Portions of the freeway sound wall within the work area was temporarily removed during construction. Access to local businesses and residences were maintained.

The existing sound wall along EB SR-60 west of Lemon Avenue will be removed and a new sound wall will be installed along the edge of pavement of the EB off – and on-ramps.

A new traffic signal will be constructed along Lemon Avenue at the new EB ramps. Traffic signal modifications will also be made at the Golden Springs Drive/Lemon Avenue intersection and at the Golden Springs Drive/Existing EB ramp intersection near the Market World shopping center.

The construction of the new ramps at Lemon Avenue will also eliminate the Truck Route designation along Golden Springs Drive between Brea Canyon Road and Lemon Avenue. (Anthony Saude helped with story)