WOODBRIDGE, N.J. – February 21 2013 – A sinkhole on a major New Jersey highway has blown tires on 18 vehicles. The sinkhole was discovered around 6 a.m. Thursday in the right lane of the Garden State Parkway southbound in Woodbridge. Two lanes had been closed while a temporary fix was made, causing a backup. They were reopened around 4:45 p.m. Thursday. The New Jersey Turnpike Authority oversees the parkway. Engineers are trying to figure out the cause which is probably related to failure of a nearby culvert or collapsed drainpipes under the road. Permanent fix will be made with work at night and on weekends. What about small tremors or a very active earth guys?