Interstate 15 in Utah

 

	I-15
Begin	St. George
End	Portage
Length	401 mi
Length	645 km
Route Arizona2 Southern Parkway 4 Brigham Road 5 Dixie Drive 6 St. George 8 St. George Boulevard 10 State Street 13 Washington Parkway 16 Hurricane 22 Leeds 23 Leeds 27 Toquerville 30 FR037 31 Painting 33 Ash Creek 36 Ash Creek Reservoir 40 Old Highway 91 42 New Harmony 51 Kanarraville 57 South Cedar City 59 Cedar City 62 North Cedar City 71 Summit 75 Pairing 78 Pairing 82 Paragonah 95 State Route 20 100 Freemont Road 109 South Beaver 112 Beaver 120 Manderfield Road 129 Sulphurdale 132 → Denver 135 Cove Fort 138 Fishlake National Forest 146 Kanosh 158 Meadow 163 Fillmore 167 North Fillmore 174 Holden 178 → Delta 184 Scipio Pioneer Trail 188 Scipio 202 Yuba State Park 207 Chicken Creek Reservoir 222 South Nephi 225 Nephi 228 North Nephi 233 Mona 242 Foothill Drive 244 Santaquin 248 Payson 250 North Payson 253 W 8000 S 257A Spanish Fork 257B → Price 260 Springville 261 North Springville 263 South Provo 265 Provo 269 North Provo 271 Orem 272 North Orem 273 Aspen 275 Pleasant Grove 276 American Fork 278 Main Street 279 American Fork 282 North American Fork 284 → Alpine 288 14600 S 289 Bangerter Highway 291 12300 S 292 11400 S 293 10600 S 295 9000 S 297 7200 S 298 → Salt Lake City beltway 300 5300 S 301 4500 S 303 3300 S 304 → Green River 305 → West Valley City 306 13th Street 307 Downtown Salt Lake City 308 → Reno 309 600 N 310 Bodwell Street 311 2300 N 312 313 → Salt Lake City beltway 314 Center Street 315 2600 S 316 500 S 317 319 400 N 322 Farmington 324 Legacy Parkway 328 Kaysville 330 Layton 331 Layton 332 2000 N 334 700 S 335 Hill Air Force Base 338 Roy 339 Riverdale 340 → Green River 341 Downtown Ogden 342 Ogden 343 2100 S 344 1200 S 346 Pioneer Road 349 2700 N 351 2000 W 357 750 N 362 363 Brigham City 365 North Brigham City 372 Honeyville 376 Elwood 379 → Boise 381 Tremonton 385 Riverside 392 Plymouth 398 Portage Idaho

Interstate 15 or I -15 is an Interstate Highway in the U.S. state of Utah. The highway forms the north-south route of the state and runs from St. George on the Arizona border in the south through the Salt Lake City region to Portage on the border with Idaho in the north. A fairly long stretch of 64 kilometers in length is double-numbered with Interstate 84between Ogden and Tremonton. The highway also runs near several national parks, the Great Salt Lake and also close to the Wasatch Range east of Salt Lake City. Between Spanish Fork and Brigham City, a 160-mile stretch of road runs through urbanized areas. The stretch from I-15 in Utah is 401 miles or 645 kilometers long.

• NecessaryHome: Provides a list of all postal codes in the state of Utah, covering area code, zip code and map for each city within Utah.

Travel directions

I-15 in southern Utah.

Southern Utah

At St. George, Interstate 15 in Arizona crosses the border with Utah. St. George is a fast-growing city, the largest between Las Vegas and the Salt Lake City region. The landscape still consists of mountains and desert and at Toquerville there is a turnoff to the adjacent Zion National Park. Along the way you can see many buttes and mesas, small and large plateaus that abruptly end in precipices. The next bigger city is Cedar City. The highway runs through a spectacular valley here. To the west there is really nothing, only unpopulated mountain areas and deserts. To the east is Bryce Canyon National Park and the scenic areas north of the Grand Canyon and Glen Canyon. To the east is also the Dixie National Forest, a large forest area with mountains reaching up to 3,700 meters.

At the hamlet of Cove Fort, Interstate 70 turns east and continues through the Rocky Mountains to Denver, 800 kilometers to the east. The highway here is known as the Veterans Memorial Highway. One sometimes drives through small irrigated agricultural areas, in this otherwise very sparsely populated area. The highway runs parallel to Fishlake National Forest to the east and the Silver Desert to the west. At Holden, US 50 turns west to Delta and Nevadathrough the vast deserts. Here, US 50 is double-numbered for a bit with Interstate 15, which exits at Scipio back to I-70, forming a shortcut for traffic from I-70 heading north. The next slightly larger town is Nephi. From here one can enter the Great Salt Lake Desert, a very remote desert area. The Dugway military test site is also located here.

The highway then enters the urbanized region of the Wasatch Front, a suburban area around the cities of Spanish Fork, Provo and Orem, located between the fairly large Utah Lake and the Wasatch Range. The entire eastern shore of Lake Utah is highly urbanized with nearly half a million residents. The highway is also a lot wider here and has 2×4 to 2×6 lanes. Provo’s metropolitan area merges almost directly into that of Salt Lake City.

• a2zDirectory: Lists popular attractions in Utah, including parks, festivals and holidays of Utah.

Salt Lake City & Northern Utah

I-15 in Salt Lake City.

One passes a small pass height and enters the Salt Lake City metropolitan area. Salt Lake City is sandwiched between the Great Salt Lake, the deserts and the Wasatch Range to the east. The suburbs are quite large and I-15 runs for 60 kilometers through built-up areas. At Murray level, one crosses Interstate 215, Salt Lake City’s half ring road, which is 47 kilometers long. The highway then has 2×5 lanes. The corridor here mainly consists of large industrial areas. At South Salt Lake, a major interchange with Interstate 80 heads east to Evanston and Cheyenne in Wyoming and finally New York City. To the west, theState Route 201, a regional highway to West Valley City. I-15 runs west of downtown Salt Lake City and is briefly double-numbered here with I-80. A few miles away, I-80 turns west to Reno and San Francisco. Salt Lake City itself is about 1,300 meters high, but the mountains east of the city are up to 4100 meters high. From the highway you have a beautiful view of these mountains. Interstate 215 rejoins on the north side of town.

A few more suburbs follow, but the next larger town of Ogden is not far away. The highway here runs some distance from the east bank of the Great Salt Lake. At Ogden, Interstate merges 84, which is double-numbered with I-15 for the next 40 miles. In this area there are more agricultural activities, due to the proximity of the immense lake. One passes by Brigham City, the last larger town in Utah on I-15. At Tremonton, I-84 splits off again to head for Boise in Idaho and Portland in Oregon. At Portage, Interstate 15 continues in Idaho.

I-15 Express lanes

Interstate 15 has the longest continuous express lanes in the United States, spanning 120 kilometers from Spanish Fork to Layton. These express lanes are relatively simple and are actually HOT lanes, with one lane in each direction for which a toll has to be paid. Dynamic toll rates guarantee a free-flow flow at all times.