20 locations along its of Interstate Highway. Along I-35, there are five locations that have facilities accessible to each direction of traffic. A sixth is under construction in northern Polk County. Parking areas are divided so passenger automobiles are separated from large trucks. Common among all of the rest stops are separate men's and women's restrooms, payphones with TDD capabilities, weather reporting kiosks, vending machines, and free wireless Internet. Many stations have family restrooms and dump stations for recreational vehicles. The first rest areas along Iowa's Interstates were built in the 1960s. They were modest facilities; separate buildings housed the restrooms and vending machines. A few rest stops had another building with local tourist information. The newer facilities feature one large building housing as many as 28 more toilets than the older buildings, in addition to all the other common rest area amenities. They also feature artwork by local Iowa artists. Each new rest area is designed around a theme. For instance, the facility near Story City celebrates the history of transportation in the state. Story County is the home of Iowa DOT and the location where the historic Lincoln Highway and I-35 intersect. History The first section of I-35, a stretch from Cumming to Urbandale, opened around September 21, 1958. Within five years, the Interstate had grown to , extending from US 34 in Osceola to the eastern interchange with I-80 and I-235. The next two sections of I-35 were the from Ankeny to US 30 near Ames and the from Ames to US 20 near Williams. By 1972, I-35 was completed at the Missouri and Minnesota state lines. In southern Iowa, the last section, from Iowa 2 near Decatur City to the state line, was completed on December 2, 1970. In northern Iowa, the section from Iowa 9 near Hanlontown to the state line opened on December 12, 1972. The last section of I-35 to open, from US 20 to Mason City, opened on November 14, 1975. Exit list See also 80/35 Music Festival References External links Iowa 35 Transportation in Decatur County, Iowa Transportation in Clarke County, Iowa Transportation in Warren County, Iowa Transportation in Polk County, Iowa Transportation in Story County, Iowa Transportation in Hamilton County, Iowa Transportation in Wright County, Iowa Transportation in Franklin County, Iowa Transportation in Cerro Gordo County, Iowa Transportation in Worth County, Iowa