When it closes
The tunnel bores through the Continental Divide, so it doesn't close for snow the way an open summit does. The approaches on both sides do, for avalanche control, whiteout conditions, and the crashes that pile up on a steep, high-altitude grade in bad weather. Chain law and traction law restrictions on I-70 through this stretch are common all winter, and holiday ski traffic can back the approaches up for miles even in clear weather.
Are chains required at the Eisenhower Tunnel?
CDOT sets traction and chain law restrictions on I-70 through this stretch, and they tighten fast in a storm.
How high is the Eisenhower Tunnel?
11,158 feet, the highest point on the U.S. Interstate Highway System. Compare it with Vail Pass further west on the same corridor.
How far is the Eisenhower Tunnel from Denver?
About 60 miles west on I-70. Track your mile marker through the tunnel and over the Divide with the MileCheck app on CarPlay or Android Auto.
Where are the plows?
The live page shows each one as an arrow pointing the way it is heading. Parked trucks are listed too.