Interstate 15

Interstate 15 is an interstate highway in the western United States. It goes from San Diego, California just south of Interstate 8 (where it sputters out and becomes California State Route 15) to Sweetgrass, Montana at the Canadian border. North of its juncture with California State Route 91 in the Inland Empire (California), the route follows (roughly) the old US Route 91.

It is possible that this highway may be extended south to Interstate 5 along CA 15 to Barrio Logan, California in the future. Note there are three Interstate 215's - in Inland Empire, California; Las Vegas, Nevada; and Salt Lake City, Utah.

Table of contents

1 Number of Miles 2 Major Cities Along the Route 3 Intersections with other Interstates 4 Spur Routes 5 Reference

Number of Miles

• California - 290 miles
• Nevada - 122 miles
• Arizona - 29.40 miles
• Utah - 402 miles
• Idaho - 195 miles
• Montana - 397 miles
• TOTAL: 1435

Major Cities Along the Route

• San Diego, California
• Las Vegas, Nevada
• North Las Vegas, Nevada
• Salt Lake City, Utah
• Pocatello, Idaho
• Great Falls, Montana

Intersections with other Interstates

• Interstate 8 in San Diego, California
• Interstate 10 in Ontario, California
• Interstate 40 in Barstow, California
• Interstate 70 in Cove Fort, Utah
• Interstate 80 in Salt Lake City, Utah
• The western Interstate 84 in Ogden, Utah. They stay merged until Tremonton, Utah.
• The western Interstate 86 in Pocatello, Idaho
• Interstate 90 in Butte, Montana. They are merged for 9 miles.

Spur Routes

• Inland Empire, California - I-215
• Spur to Henderson, Nevada outside Las Vegas - I-515
• Beltway (Under Const.) Las Vegas, Nevada - I-215
• Salt Lake City, Utah - I-215
• Butte, Montana - I-115
• Great Falls, Montana - I-315

Reference

• http://www.ihoz.com/