What is the longest vehicle tunnel in Utah and how long it?

The Parleys Canyon Tunnel is the longest vehicle tunnel in Utah, at 1.2 miles (1.9 km) in length. It is located on Interstate 80 in the Wasatch Mountains, about 10 miles (16 km) east of Salt Lake City. The tunnel was completed in 2018 and is part of a larger project to improve safety and traffic flow on I-80.