Reconstruction of the Karakoram Highway the China-Pakistan Friendship Tunnels can be traced to 2013, when China began construction on a bypass of Attabad Lake with a combination of 5 km worth of tunnels, two large bridges, and 78 small bridges to bypass the lake which had been formed after a 2010 earthquake triggered massive landslides. The resulting landslides cut off both the Indus River and Karakoram Highway resulting in the formation of the reservoir. Prior to completion of the bypass, all vehicular traffic had to be loaded onto barges to traverse the new reservoir. Construction of the tunnels began in 2012 and required 36 months
Minnesota State Highway 1 1" designation because it was one of the longest trunk highways, and would allow re-use of the Route 1 markers removed from along U.S. 61 and U.S. 65 in 1934. When it was marked in 1934, it was only paved from U.S. 75 to Highway 32 and from Highway 169 to Ely. As recently as 1963, significant portions of Highway 1 were unpaved. Highway 1 still had an unpaved segment in 1996, between U.S. 53 and State Highway 169 in northern Saint Louis County. At that point it was swapped with paved "Saint Louis County Road 22". Minnesota State Highway