East St. is a continuous connector between US 5 and MA 141 on the Easthampton side of Mt. Tom. It’s 35mph the whole way but probably should be 45. There’s an abandoned garage between Clark and Vadnais St. just around a bend obscured by trees when you’re coming from the north where cops like to camp out occasionally, usually in the evening. I’ve never been pulled over going 45 but I definitely wouldn’t go any faster than that.