RICHMOND (AP) — After years of planning, construction will begin next spring on the new express toll lanes on the Capital Beltway, state transportation officials said yesterday.M The public-private project will cost about $1.7 billion — nearly double the projected cost two years ago — and will be completed in 2013, the Virginia Department of Transportation said. VDOT Commissioner David S. Ekern said the agency has reached an agreement in principle with two private contractors — Transurban DRIVe and Fluor Enterprises — for design, construction, operation and maintenance of the high occupancy toll (HOT) lanes. The project is intended to...