Lemon Avenue / SR-60 Interchange

Project Updates

  •  Updated 1/10/19-  Weather Permitting - Starting at 7 p.m. on Friday, January 25 to 5 a.m. on Monday, January 27, all SR-60 on- and off- ramps at Lemon Avenue will be closed to vehicular traffic. Suggested alternate detour routes include SR-60 interchanges at Fairway Drive or Grand Avenue.

    In addition, all northbound and southbound traffic lanes of Lemon Avenue between Earlgate Street and Golden Springs Drive will be closed during this timeframe. Suggested alternate routes include Valley Boulevard and Golden Springs Drive for east-west travel and Fairway Drive and Grand Avenue for north-south travel. (See map for details) 
  • Lemon Avenue interchange and roadway closures for January 11-14 2019
  • October 2018 - The eastbound Pomona Freeway (SR-60) Lemon Avenue on-ramp is scheduled to open to motorists at 5a.m on October 16, 2018. Simultaneously, the eastbound on-ramp at Brea Canyon Road will be permanently closed.
  • May 1 - Permanent Ramp Closure and Ramp Openings. The eastbound Pomona Freeway (SR-60) off-ramp at Brea Canyon Road will be closed permanently. Simultaneously, the newly constructed eastbound Pomona Freeway (SR-60) off-ramp and westbound on-ramp at the newly constructed Lemon Avenue Interchange will open to traffic. See image below for location details.

SR-60 Lemon Avenue Ramp Closure and Opening Map

Project Description

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), will be constructing a 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.


  • Begin Project Construction November 2016
  • Complete Project Construction Summer 2018

Related Documents


Complete Documentation Available Via the Cal Trans Website.

Project Description: Partial Interchange

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 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.

This rendering depicts project details (Show is the selected Alternative 3 of the four alternatives proposed).

Lemon Avenue - SR-60 Interchange Alternative 3

Project-Related Questions?