View Public Works' open solicitations, and learn more about how to register as a supplier and submit a bid or proposal. Preliminary design is currently underway.It includes detailed engineering and environmental studies of the preferred alternative to minimize impacts. A brief narrative describing the proposed project. Submit applications for Chapter 102 and 105 permits in Allegheny County. The administrator has made the following estimates pertinent to the proposal. Allegheny River Green Boulevard. The Allegheny Green River Boulevard is a long-term plan to connect neighborhoods along the south shore of the Allegheny River. A new stretch of mainline roadway to increase safety, reduce congestion and allow for the free flow of traffic through Allegheny and Stonycreek Townships.