sentences:  I-81 meets Halfway Boulevard, which leads to several shopping centers including the Valley Mall, at a six-ramp partial cloverleaf interchange (Exit 5).I-81 continues northeast along the west edge of Hagerstown.The Interstate crosses CSX's Lurgan Subdivision and passes under MD 144 (Washington Street) with no access before reaching a cloverleaf interchange with US 40 (National Pike) (Exit 6).