DIX HILLS - The Northern State Parkway reopened at around 5 p.m. tonight following a deadly crash. Police say the accident happened around 11:20 a.m. on the westbound Northern State Parkway between exits 41 and 42 in Dix Hills. They say two cars collided, and one car hit a tree. The unidentified driver of that vehicle has died.Police say the other driver is OK.