美國國道
US 830 was created in 1926 as part of the initial set of United States Numbered Highways, running from US 101 at Megler to US 97 near Maryhill. When it existed, US 830 was the highest-numbered route in the U.S. Highway System (and remains the highest U.S. route number ever used). The highest numbered route still in existence is US 730.