Interstate 15 (
I-15) runs north–south in the U.S. state of
Utah through the southwestern and central portions of the state, passing through many of the population centers of the state, including
St. George,
Provo,
Salt Lake City, and
Ogden, the latter three being part of the urban area known as the
Wasatch Front. It is the primary north–south highway in Utah, as the majority of the state's population lives along its corridor. The only
Metropolitan Statistical Area in Utah not connected by I-15 is the
Logan Utah-Idaho Metropolitan Statistical Area. The entire length of I-15 within Utah (and south into Arizona) is designated as the Veterans Memorial Highway.