Wallace is a city located in the Silver Valley Mining District of the Idaho panhandle. Wallace is Shoshone County Seat located off of Interstate 90. Prior to the construction of Interstate 90 in Wallace the community was along what was US Route 10. Headed eastbound US Route 10 originally passed through Wallace via, Silver Valley Road, River Street, 4th Street and Bank Street. Below the original alignment of US Route 10 in Wallace can be seen depicted on the 1957 United States Geological Survey Map.
Part 1; the history of US Route 10 in Wallace
What is now Wallace came into prominence as a corridor of overland travel when the Mullan Road was constructed through the Rocky Mountains. The Mullan Road had been constructed as the first Wagon Road across the Rocky Mountains by United States Army from the Spring of 1859 through the summer of 1860. The Mullan Road was aligned between Fort Benton in Dakota Territory west to Fort Walla Walla in Washington Territory near the Columbia River. Within the Rocky Mountains in what is now Idaho the Mullan Road passed through what is now known as Silver Valley. The Mullan Road can be seen crossing through Silver Valley of Idaho Territory on the 1872 Bancroft's Map of Oregon, Washington, Idaho and Montana.