Steep grades.  Sharp curves.  Hazardous conditions.  Teton Pass has some of the steepest grades of any highway in the continental United States.  A 60,000 lbs. maximum weight restriction is in effect at all times on WY 22 between the town of Wilson and the Idaho state line.  No trailers of any kind are allowed on the pass between November 15 and April 1 each winter.  Closures during inclement weather and/or heavy snowfall should be anticipated.  Drivers are encouraged to use lower gears to maintain appropriate speeds while travelling down steep grades.  Avalanches are possible whenever snow is present.  Tire chains may be required for all vehicles under certain conditions.      

Teton Pass is located at the southern end of the Teton Range, just west of the town of Jackson and south of Grand Teton National Park.  The high-mountain pass rises approximately 2,400 feet from its base near the town of Wilson before descending back down near the Idaho state line where Wyoming State Highway 22 turns into Idaho State Highway 33.  In the summer and fall, Teton Pass is an incredibly picturesque drive with breathtaking views. 

The most common alternate route between Jackson, WY and Driggs, ID is through Hoback Junction south of Jackson toward Alpine, WY and west into Idaho's Swan Valley.  

Steep grades.  Hairpin curves.  Narrow road.  Hazardous Conditions.  At the northern end of the Big Horn Mountains, U.S. 14 runs between Dayton and Shell while U.S. 14A runs between Dayton and Lovell.  U.S. 14 ad U.S. 14A split at Burgess Junction, approximately 20 miles west of Dayton, WY.  These mountain passes include long, steep, narrow, and winding roads with grades between 8% and 10% in several sections of the two-lane highway.  Through U.S. 14's Shell Canyon the road is extremely narrow in places.

These mountain roads are not ideal routes for oversize or over-length loads.  Even for experienced drivers, navigating these highways can be harrowing and dangerous in semi trucks and other combination vehicles.  If you are driving any relatively large and/or heavy vehicle such as a motor home, RV, truck with a trailer, commercial vehicle, moving truck, etc., remember to use lower gears to regulate your speed when driving down hill in order to avoid burning up your brakes.

U.S. 14A is a challenging road, even in the summer time.  It is seasonally closed during the winter.  For tourists, this can be a wonderful drive with beautiful views, trees, wild flowers, and wildlife.  Some sections of these highways provide you with the ability to see for hundreds of miles in a given direction. 

Hairpin turns.  Steep downhill grades.  Long uphill climbs.  Blind corners.  While beautiful and probably one of the easier mountain stretches in northern Wyoming, this section of highway can be difficult to safely navigate for inexperienced drivers or large commercial vehicles.  This highway is not advisable for over length or oversize loads.  As with most of Wyoming's roadways, wildlife are a constant hazard. 

The eastern portion of this stretch of highway traverses high mountain landscapes in the southern section of the Big Horn Mountains.  The roadway conditions can vary drastically as you ascend and descend the various sections.  As always, remember to use lower gears to regulate your speed when driving down hill in order to avoid burning up your brakes.

The western portion of this stretch of highway includes hairpin, blind curves prior to reaching the town of Tensleep.  This section is also a widely recognized recreation area with world class rock climbing so be cautious of slow moving vehicles, vehicles making sudden stops, and people and pets crossing the highway.  

Steep grades.  Strong wind.  Winding roads.  Variable weather.  Interstate 80 (I-80) is the second-longest interstate highway in the United States running from San Francisco to New York.  The highest section of I-80 is affectionately known as "The Summit" and sits at an elevation of 8,640 feet above sea level.  The Summit is located just east of Laramie, WY - home of the University of Wyoming - and west of Cheyenne, WY - the state's capital and largest city.

This section of interstate is relatively well-travelled due to the fact that it's part of a major interstate highway.  However, its hazards shouldn't be underestimated.  The I-80 corridor in this area of the state is infamous for its incredibly strong winds which often have the strength to blow commercial vehicles and trailers onto their sides or off the roadway.  The elevation near The Summit causes extremely variable weather conditions with snowfall being common even into the early summer.  

The Summit itself runs through Telephone Canyon as it ascends Sherman Hill.  This stretch of interstate has average grades of about 6% and long, winding curves.  Wildlife such as deer, elk, and moose are common in the canyon.  Nearly all types of vehicles should be able to navigate this roadway without much trouble when the weather is ideal and the roads are dry.  Wyoming's winters, however, often call for extreme caution and reduced speeds in this area.  Variable speed limit signs are in place throughout this section of I-80 and should always be followed.  

Steep grades.  Winding roads.  Variable weather.  Heavy traffic.  The Snowy Range Scenic Byway is a section of WY 130 between Laramie, WY and Saratoga, WY, along the foot of the Snowy Range mountains.  One of the first scenic byways designated on National Forests, this 29-mile stretch of paved road crosses through spectacular alpine habitats. It rises from sagebrush and lodgepole pine forests below, and offers views of rugged peaks reaching over 12,000 feet in elevation, crystal clear lakes, and gorgeous displays of native wildflowers in the spruce-fir forests and alpine areas of the high country.

Snow lingers late and returns early at the upper elevations, so the byway is normally open from Memorial Day through October.  Wildlife such as deer, moose, elk, and more are prevalent through this stretch of highway.  During the late spring through early fall, most vehicles should be able to navigate this highway, although consideration should be made for the steep grades and sharp curves.  Alternate routes are advised for large vehicles or inexperienced drivers.  In the summer months, heavy recreation traffic should be expected along the scenic byway. 

Long, steep grades.  Severe weather.  Wyoming Highway 28 is a 96.46-mile-long Wyoming state highway known as the South Pass Highway. It travels from its split from Wyoming Highway 372 near the Seedskadee National Wildlife Refuge, across the high plains and over South Pass until its junction with U.S. Route 287 8 miles (13 km) south of Lander.  It crosses the Continental Divide at South Pass, one of the lowest passes on the continental divide at 7,550 feet (2,300 m). South Pass was used by settlers on the Oregon Trail. From there, there are spurs to the south leading to the South Pass Historic Site and Atlantic City. From there it curves north, travelling about 17 miles (27 km) until its merge with US 287, near Lander.  

From late fall through early spring (and sometimes even in the summer months) the section of WY 28 known as South Pass can experience severe weather and wintery conditions.  Wildlife is always a hazard along most of the highway.  This stretch of road is extremely rural.  Despite the great views, there are no services for long distances and assistance can take a long time to arrive. 

Steep grades.  Hazardous conditions.  Wildlife.  This high mountain pass reaches an elevation of 9,655 feet (2,943 m) above sea level. On the Continental Divide in the Absaroka Mountains of northwestern Wyoming in Teton County, Togwotee Pass runs between the town of Dubois and Moran Junction in the Jackson Hole valley.  The pass provides the most direct access to Grand Teton National Park from eastern Wyoming. Located between Two Ocean Mountain and Breccia Peak, sweeping vistas of the Teton Range are visible from the western slopes of the pass. 

Located in the Bridger-Teton National Forest and adjacent to Shoshone National Forest, the pass receives heavy winter snowfall and is a top destination for snowmobiling, backcountry skiing, and cross-country skiing. Annual snowfall at the pass often exceeds 25 feet (7.6 m) (reports of over fifty feet (15 m) of snow are also known) in any given winter and the road can be shut down for days at a time during blizzards. Togwotee Pass runs along the edge of one of the largest wilderness areas in the contiguous United States.  Wildlife are abundant year round.