List of Interstate Highways in Utah
The Interstate Highways in Utah are maintained by the Utah Department of Transportation (UDOT). The Interstate Highway System is a nationwide system with only a small portion of these routes entering Utah. Originally, the State Road Commission of Utah, created on March 23, 1909 was responsible for maintenance, but these duties were rolled into the new UDOT in 1975. There are of Interstates within the state. The longest is Interstate 15 (I-15) at and the shortest is I-215 at . One unique former route is Interstate 415, which was never signed as such, and was only used as a temporary designation for the eastern portion of what is now the Interstate 215 belt loop around Salt Lake City.
Sioux City, Iowa
Interstate 29 is a major controlled-access highway in Sioux City and the surrounding area providing easy access of the 20 mile stretch covering Sioux City and the majority of its suburbs. It approaches the city from Omaha to the south before curving northwest along the Missouri River near downtown. The highway then enters South Dakota and curves back to the north as it approaches Sioux Falls. Interstate 129 is an auxiliary Interstate that connects South Sioux City, Nebraska to the south side of Sioux City and works as a bypass for travelers to other surrounding suburbs. Interstate 129 also interconnects with U.S. Route 75 which is in expansion to expressway form connecting Sioux City to Worthington, Minnesota. U.S. Route 20, the longest road in the United States spanning is also in the works of expanding from a two-lane highway to four-lanes from Sioux City to Dubuque, Iowa which will provide faster and easier access comparable to Interstate 80 in Iowa. Sioux City operates automatic speed cameras on interstate highways. The cameras are operated by Redflex Holdings and are reported to provide approximately $4.5 million per year for the city budget. The state of South Dakota has been refusing to provide addresses associated with licence plates due to the large number of South Dakota residents fined by Sioux City.