 The project was part of the Commonwealth's Accelerated Bridge Program.Off exit 46 in Methuen, Massachusetts, the surface level traffic circle was rebuilt as part of an overall infrastructure improvement that also included constructing a new bridge carrying the interstate over the local road, reconstructing on- and off-ramps to the highway, and realigning the interstate itself.Exit 1 in Salem was originally designed and built with ramps allowing northbound traffic to exit to Rockingham Park and return drivers to southbound 93 only.