An early morning accident on the westbound Southern State Parkway caused havoc for commuters across the Island.Officials say a pedestrian was hit around 5:30 a.m. Thursday near the entrance ramp for the Meadowbrook Parkway. The investigation forced police to close all but one lane on the westbound side of the parkway. The closures left the Southern State Parkway backed up into Suffolk County for the morning commute.Police say they are still investigating the incident.