The Winchester Street Reconstruction Project involves the reconstruction of Winchester Street, between Rt. 101 and the Island Street/Pearl Street intersection, including the construction of two multi-lane roundabouts and the replacement of the Island Street bridge over the Ashuelot River. The project includes various items such as removing small trees, invasive species control, fill abandoned pipe, removal of existing pipe, and more. The bid analysis provides a detailed breakdown of the estimated costs for each item.