Interstate 664 connects Interstate 64 in Hampton to I-64 and Interstate 264 in Chesapeake.
Its most notable feature is the Monitor Merrimac Memorial Bridge-Tunnel, which carries traffic over three miles of the James River and under it for a mile.
It provides a second interstate crossing in the area, which is a major tourist destination and home to NASA and several military bases.
The facility’s high-tech traffic control room, lighting and ventilation were state-of-the-art when it was completed in 1992. The facility cost $400 million.