 In Willington center, it continues north, briefly overlapping Route 74 (Tolland Turnpike), then continues north as Ruby Road to Exit 71 of I-84.Past the I-84 overpass, Route 320 turns onto Lohse Road for another and officially ends at the westbound I-84 off-ramp.Route 320 was commissioned in 1963 from former SR 520 and has had no significant changes since.