Nearly 300 new hurricane gates are being installed between Richmond and Norfolk to make it easier to evacuate people fleeing the Hampton Roads area in case of a major storm. The $5.8 million project will add the gates to entrance and exit ramps off Interstates 64 and 664 and Route 199. Another 142 gates were installed last year along eastbound I-64 from the Hampton Roads Bridge-Tunnel to the Interstate 295 exchange near Richmond at a cost of about $3 million.