When the current state highway numbering system was first posted in January 1964, US 830 served as SR 830. In 1968, US 830 was dropped from the US highway system. Former US 830 from Jct US 101 at Johnsons Landing to Kelso became SR 4; from Kelso to Vancouver, I-5; from Vancouver to Smithville, SR 14; and from Smithville to Jct US 97 at Maryhill, US 197/SR 14.
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