Dulles (WBQB/WFVA/AP) -- Tolls on the Dulles Toll Road in Virginia will increase in January and over the next three years. The Metropolitan Washington Airports Authority Board of Directors voted to increase the toll by 25 cents at ramps and another 25 cents at the main toll plaza. Current tolls are 75 cents to drive through the main toll plaza and 50 cents to enter the roadway from one of the ramps. The tolls will help pay for construction of the Dulles Corridor Metrorail Project and improvements to the Dulles Toll Road. The increases take effect Jan. 1. Tolls at the main toll plaza will also increase by 25 cents in 2011 and 2012 under the plan approved by the board.