Night closures for Eisenhower tunnels most of April

Drivers traveling at night through the Interstate 70 mountain corridor can expect delays as crews install a fixed fire suppression system in the Eisenhower-Johnson tunnels for 20 nights starting Monday.

The Colorado Department of Transportation says most of the work on the $20 million system will be done above the tunnels in ventilation shafts.

One tunnel will be closed completely with traffic being escorted through the other during the overnight work. The closures last from 10 p.m. to 6:30 a.m. each Sunday through Thursday nights, weather permitting, with traffic control starting at 8 p.m.