From The Washington Post:

"Construction of the first major expansion of the Capital Beltway in a generation could start as soon as next year, Virginia transportation officials said yesterday after signing a deal with two private firms to build toll lanes for a speedier ride on 14 miles of the chronically clogged highway.

The deal calls for adding two lanes in each direction of the Beltway, separated from other traffic, between Springfield and Georgetown Pike near the Maryland border. The high-occupancy toll -- or HOT -- lanes would be free for vehicles containing three or more people; other drivers would pay to use them. To keep the lanes from clogging, tolls would increase with the amount of traffic.

The state would not have to pay anything for the new lanes. The private companies would invest the entire $900 million cost of the project in exchange for all or part of the toll revenue.

The lanes represent the first step in what regional leaders hope is an extensive network of toll lanes across the region. Virginia officials are considering additional HOT lanes on parts of Interstates 95 and 395, and Maryland officials are exploring express toll lanes on the Beltway, I-270, the Baltimore Beltway and I-95 north of Baltimore.

Maryland officials said yesterday that they are in the early stage of studying Beltway toll lanes. 'We're a few steps behind Virginia,' said Valerie Burnette Edgar, spokeswoman for the Maryland State Highway Administration."