Yes, West End Ave will remain a two-way street.
In the current proposed design (as shown on the project website), vehicles from Marquard Ave can enter West End Ave (westbound) and vehicles from West End Ave (eastbound) can make a right turn onto Marquard Ave or access Second St via a through movement at the intersection with Marquard Ave. Vehicles on West End Ave can also access Second St through the signalized intersection at Greenfield Ave and Fourth St.
Traffic signal timing adjustments have been made and will continue to be monitored to improve access from Greenfield Ave to Fourth St (especially for the eastbound direction).