Grand Avenue and Golden Springs Drive Improvement Project

This project is a component of the SR-57 (Orange) / SR-60 (Pomona) Confluence Project – Phase IIA

Construction period: October 2020 – 2021

Cost: $16.8 million

Funding Source: $6.8 million MTA grant and $10 million of local match funding.

Documents

Project Description

The project area includes Grand Avenue south of the SR-60 interchange and the Grand Avenue and Golden Springs Intersection.

Improvements include:

Construct one northbound and one southbound approach lane on Grand Avenue
Construct a westbound right-turn lane from Golden Springs Drive
Widen sidewalks for ADA accessibility
Install City’s streetscape elements – traffic signals, street pavers and landscaping
Install new streetlights on the north side of Golden Springs Drive
Widen Golden Springs Drive between Copley Drive and Racquet Club Drive to add a dedicated westbound right-turn lane
Installation of pedestrian countdown signals at intersection
Relocate and construct golf cart tunnel underneath Grand Avenue (Golf Course Renovation Project)
Modification of hole three of the Diamond Bar golf course to allow for freeway improvements (Golf Course Renovation Project)