Construction/Development Projects

1. Diamond Bar Boulevard Streetscape Project

   The City is planning streetscape improvements on Diamond Bar Boulevard to enhance the look and function of the medians, crosswalks, and sidewalks between the 60 Freeway and Golden Springs Drive.

2. Lemon Avenue / SR-60 Interchange

   Read through project updates on the Lemon Avenue / SR-60 Interchange construction.

3. Residential Roadway Maintenance

   The City is divided into seven separate Slurry Seal Areas. The areas are rotated each year to receive a slurry seal application and/or a chip seal overlay.

4. SR-57 / SR-60 Confluence at Grand Avenue Project

   Learn about the SR-57 / SR-60 confluence at Grand Avenue Project.

5. Sycamore Canyon Trailhead Repair Project

   Sycamore Canyon Park Slope Erosion & Trail Repair Project began construction in April 2019. Crews are currently working to clear heavy brush from the hillside in preparation for the removal of the fallen concrete staircase that had been damaged through heavy rains. The project is in its early phases with a scheduled completion date for fall of this year.