Oklahoma City's Will Rogers World Airport, just 10 miles northwest of the city, is served by 12 commercial carriers that carry more than 3.2 million passengers a year. As of 2005 construction was underway on a five-year expansion project totaling more than $100 million and expected to add 9 new gates, bigger ticketing and lobby areas, and better traffic flow to handle capacity requirements into 2012 and beyond. Located near the center of the United States, Oklahoma City is connected to the east and west coasts and north and south borders of the nation by interstate highways I-40, I-35, I-44, and I-240. Numerous state highways and a turn-pike system provide easy access to any location in the metropolitan area. Amtrak provides train service, and Greyhound/Trailways Bus Lines schedules buses into and out of the city.
Streets in downtown Oklahoma City are generally laid out in an east-west, north-south grid pattern, with numbered streets running east-west. Taxis and buses are available for transportation to all parts of the city. The extensive bus system was upgraded in 2004 with the addition of the new $6.2 million METRO Transit Downtown Transit Center, an air-conditioned transfer center. As part of the city's downtown revitalization efforts, the Oklahoma Spirit trolley system now takes visitors around Bricktown and downtown for just a quarter. In warm weather, Pedicabs and horse-drawn carriages ferry customers all over Bricktown. A mile-long pedestrian canal through Bricktown turns south at the new ballpark, then heads under the highway to a waterfall-and-forested park area. Water taxis carry visitors to canal-side restaurants.