booths or ramps)?
In North America, Ontario Highway 401 ( http://members.aol.com/hwys/OntHwys/OntHwys401Hist.html ) in metro Toronto has 20 lanes between 4 roadways, and I-285 north of I-85 near Atlanta’s Hartsfield-Jackson Airport has 18, also between 4 roadways. Two roads in South America often mentioned as widest in the world actually have fewer lanes: Avenida 9 de Julio (part of National Route 14) in Buenos Aires, Argentina, has 16 (photos: http://photobucket.com/albums/e100/jamessidney1/buenos%20aires/ ), and the Monumental Axis in Brasilia, Brazil, widest in the world from outer edge to outer edge, has 12 (most of the right-of-way is median). In the United States, I-75 north of the northern I-285 interchange in northern Atlanta has 16 lanes, 7 SB and 9 NB, for the most along 2 roadways; I-5 in downtown Seattle has 16 spread across 4 roadways (4 C/D + 4 mainline + 4 mainline + 4 C/D). US 59 in western Houston comes close with 15 lanes across 3 roadways (the 3rd roadway is a high-occupancy vehicle,
