Motorist are advised that closure of the westbound on-ramp at Grand Avenue and right-turn-only restriction on the westbound exit ramp to Grand Avenue are scheduled to continue into late next month.
The restrictions are necessary for Caltrans to carry out the construction of a new westbound on-ramp as part of the improvements related to the SR-57/SR-60 Confluence Project.
Detour signage is in place, and recommends the following:
The Confluence Project is designed to improve traffic operation on Grand Avenue from Golden Springs Drive to the interchange at SR-60 (Pomona), increase capacity at the Grand Avenue Interchange, improve traffic operation on the freeway mainline, reduce traffic weaving and increase weaving distance and improve safety.
Additional project-related details are available on the City website at www.diamondbarca.gov/5760 or by contacting the City’s Public Works Department at 909.839.7040 or [email protected]. Information about the road closures and restrictions can be accessed on the Caltrans QuickMap online at quickmap.dot.ca.gov or by hotline at 1.800.427.ROAD (7623).