Road Information

Interstate 15 in Idaho    
Total Mileage in State: 196 miles
Northern End: At Montana state line
Southern End: At Utah state line
Mileage covered in Photos: 124 miles
Counties covered in Photos: Bannock, Bingham, Bonneville, Jefferson, Clark
Major Junctions in Photos: US 26, in Blackfoot
US 20, in Idaho Falls
Control Cities in Photos: Pocatello, Blackfoot, Idaho Falls, Dubois

Northbound

   

Speed limit signs located near mile marker 72. The speed limit on most rural stretches of Interstate in Idaho is 75 mph for cars and 65 mph for trucks.  (Photo taken 5/22/13).

Mileage sign located near mile marker 73. It's 19 miles to Blackfoot, 45 miles to Idaho Falls, and 254 miles to Butte.  (Photo taken 5/22/13).

Near mile marker 76, Interstate 15 North enters Fort Hall Indian Reservation.  (Photo taken 5/22/13).

Interstate 15 North: Road view from mile marker 77.  (Photo taken 5/22/13).

Take Exit 80 to Shoshone-Bannock Tribal Museum.  (Photo taken 5/22/13).

Interstate 15 North at Exit 80: Fort Hall  (Photo taken 5/22/13).

Interstate 15 North shield located near mile marker 80.  (Photo taken 5/22/13).

Another mileage sign, located near mile marker 81. It's 12 miles to Blackfoot, 38 miles to Idaho Falls, and 246 miles to Butte.  (Photo taken 5/22/13).

Interstate 15 North: Road view from mile marker 84.  (Photo taken 5/22/13).

Use either of the next 2 exits to get to Blackfoot.  (Photo taken 5/22/13).

Interstate 15 North at Exit 89: Interstate 15 BL / US 91 - Blackfoot  (Photo taken 5/22/13).

Near mile marker 90, Interstate 15 North leaves Fort Hall Indian Reservation.  (Photo taken 5/22/13).

Take Exit 93 to the Potato Museum and Fairgrounds.  (Photo taken 5/22/13).

Also take Exit 93 to Dept of Energy Site Craters of the Moon / ARCO.  (Photo taken 5/22/13).

Interstate 15 North at Exit 93: US 26 / ID 39 - Blackfoot / Arco  (Photo taken 5/22/13).

Interstate 15 North: Road view from mile marker 95.  (Photo taken 5/22/13).

Interstate 15 North at Exit 98: Rose-Firth Area  (Photo taken 5/22/13).

Mileage sign located near mile marker 99. It's 20 miles to Idaho Falls, 68 miles to Dubois, and 228 miles to Butte.  (Photo taken 5/22/13).

Interstate 15 North at the Rest Area located at mile marker 101.  (Photo taken 5/22/13).

Interstate 15 North: Road view from mile marker 104.  (Photo taken 5/22/13).

Interstate 15 North at Exit 108: Shelley-Firth Area  (Photo taken 5/22/13).

Take any of the next 4 exits to Idaho Falls.  (Photo taken 5/22/13).

Take Exit 119 to the Airport and Rexburg.  (Photo taken 5/22/13).

Take Exit 118 to Idaho Falls City Center.  (Photo taken 5/22/13).

Interstate 15 North at Exit 113: Exit 113  (Photo taken 5/22/13).

Use Exit 116 to Tautphaus Park Zoo.  (Photo taken 5/22/13).

Interstate 15 North at Exit 116: Interstate 15 BL / US 26 - Ammon / Jackson / Sunnyside Rd  (Photo taken 5/22/13).

Take Exit 118 to Museum of Idaho and Exit 119 to State Vietnam Veterans Memorial.  (Photo taken 5/22/13).

Near mile marker 118, the speed limit decreases to 65 mph as you pass through Idaho Falls.  (Photo taken 5/22/13).

Interstate 15 North at Exit 118: Interstate 15 BL / US 20 West / US 20 BR - Historic Downtown  (Photo taken 5/22/13).

Take Exit 119 to the Airport, Rexburg, and BYU-Idaho.  (Photo taken 5/23/13).

Interstate 15 North at Exit 119: US 20 East - Rigby / West Yellowstone  (Photo taken 5/23/13).

Interstate 15 North: Road view from mile marker 123.  (Photo taken 5/23/13).

Interstate 15 North at Exit 128: Osgood Area  (Photo taken 5/23/13).

Interstate 15 North: Road view from mile marker 133.  (Photo taken 5/23/13).

Interstate 15 North at Exit 135: ID 48 - Roberts / Rigby  (Photo taken 5/23/13).

Interstate 15 North: Road view from mile marker 139.  (Photo taken 5/23/13).

Interstate 15 North at a turnout located at mile marker 142.  (Photo taken 5/23/13).

There is a Weigh Station located at Exit 143.  (Photo taken 5/23/13).

Take Exit 143 to I.N.L. Site North.  (Photo taken 5/23/13).

Interstate 15 North at Exit 143: ID 33 - Rexburg / Salmon  (Photo taken 5/23/13).

After the exit sign for Exit 143 is this sign saying that you can take Exit 143 to Sacajawea Historic Byway.  (Photo taken 5/23/13).

Interstate 15 North shield located near mile marker 143.  (Photo taken 5/23/13).

Interstate 15 North: Road view from mile marker 146.  (Photo taken 5/23/13).

Take Exit 150 to Camas National Wildlife Refuge.  (Photo taken 5/23/13).

Interstate 15 North at Exit 150: Hamer  (Photo taken 5/23/13).

Interstate 15 North: Road view from mile marker 153.  (Photo taken 5/23/13).

Interstate 15 North: Road view from mile marker 159.  (Photo taken 5/23/13).

Interstate 15 North: Road view from mile marker 163.  (Photo taken 5/23/13).

Sign near mile marker 166.5 alerting motorists that the next services after the upcoming exit (Exit 167) are 45 miles ahead.  (Photo taken 5/23/13).

Interstate 15 North at Exit 167: ID 22 West - Dubois  (Photo taken 5/23/13).

Interstate 15 North at Exit 172: Exit 172  (Photo taken 5/23/13).

Interstate 15 North: Road view from mile marker 175.  (Photo taken 5/23/13).

Interstate 15 North at Exit 180: Spencer  (Photo taken 5/23/13).

Mileage sign located near mile marker 182. It's 31 miles to Lima, 80 miles to Dillon, and 145 miles to Butte.  (Photo taken 5/23/13).

Interstate 15 North at Exit 184: Stoddard Creek Area  (Photo taken 5/23/13).

Interstate 15 North: Road view from mile marker 187.  (Photo taken 5/23/13).

Interstate 15 North at Exit 190: Humphrey  (Photo taken 5/23/13).

Interstate 15 North: Road view from mile marker 192.  (Photo taken 5/23/13).

Interstate 15 North: Road view from near mile marker 196, as I-15 prepares to cross into Montana.  (Photo taken 5/23/13).