The construction crews behind the Interstate 95 Express Lanes are making progress.

A recent video produced by the Virginia Department of Transportation show just how much things have changed along the corridor, from Edsall Road in Alexandria to Garrisonville Road in Stafford, in the past six months.

When complete in 2015, the Express Lanes on I-95 will connect with those already operating on I-495 between Springfield, Tysons Corner, and the Dulles Toll Road. The lanes will charge single-drivers an electronic toll while vehicles with three or more people will be able to use the lanes for free.