Halloran Summit – Bad Roads for RVs is located on Interstate 15 between Baker and the Nevada border. This road is steep for an extended distance. Since this is an Interstate Highway, there are at least two lanes and a slow lane on all the steep sections. The curves are not part of the problem.
There are dedicated slow lanes both north and south. Many trucks go exceedingly slow in these lanes and lane changes to go around the slowest trucks are common.
Refer to Caltrans Quick Map for the most up-to-date information about this section of the road. Caltrans Quick Map
Elevation: 4700 feet
Length: 40 miles
Terrain: Eastbound at the summit there is a 6% grade for 10 miles. Westbound at the summit there is a plateau for about 10 miles which includes a small climb toward Halloran Springs. After Halloran Springs there is a long descent. The descent is gradual for the first two miles and then increases up to 6% for 17 miles.
Turns: When westbound turns are not the problem, indeed the road is nearly straight. From the peak of the summit eastbound turns are gradual and typical for a multilane freeway.
Rest Stops & Turnouts: When going uphill especially eastbound the biggest problem will be overheating. At the summit, there is a truck brake check area for eastbound trucks. There are four exits between Baker and Nipton Road at the end of the eastbound descent.
Traffic: This road is typically busy and there is a large difference in speed between large trucks and cars.
Runaway truck ramps: Eastbound runaway truck ramp is on the right side at 5 miles down the grade.
Halloran Summit – Bad Roads for RVs — Our experience
We have traveled Interstate 15 numerous times on our travels. It is the primary northeast bound route from the Los Angles Basin to Las Vegas and points further north.
We traveled this route during our journey to and from the solar eclipse in August 2017 this link. 2017 Total Solar Eclipse
We also traveled this route during our journey from Las Vegas and Riverside in November 2018.
Here is the link to our interactive map. Bad Roads for RVs