Next week, crews will be replacing signs in the Hanging Lake Tunnel; traffic will be delayed all night and into the morning.
The new signs will be lit by LED lights, therefore will be more energy efficient. From midnight to 5 a.m., Monday through Thursday, traffic will only be allowed through the tunnel three times an hour.
Delays will also occur from 7 p.m. to midnight, and again from 5 to 7 a.m., as one lane will be closed.
This is a $3 million project, being carried out by Casper Electric.