Authorities are investigating a weekend crash on Rte. 495.
It happened on the southbound side near Exit 2 at approximately 1:00 a.m. Sunday.
State police told WATD that a Mercedes station wagon was found abandoned but there was no sign of the driver.
A K-9 unit failed to locate the driver, but a spokesman says troopers were able to determine that person was not injured.
The cause of the accident is unclear.