Endpoints of
US Route 830

US 830 was entirely in Washington, running along the north bank of the Columbia River, connecting US 97 to US 101.  It never connected with its implied "parent" (US 30), but that route ran (and still does run) along the south bank in Oregon, right across the river from US 830.  This first photo was looking west on WA hwy. 4 where it ends at US 101:

That is the modern functional equivalent of US 830's terminus (the town of Naselle is about five miles behind the camera).  However, historic topo maps reveal that junction did not exist prior to the 1980s, and that US 830's endpoint was actually a half-mile further west:

Until the mid-1930s the highway running along the north bank of the Columbia (today's WA hwy. ​14) was not complete between Lyle and Maryhill.  So when US 830 was first commissioned, traffic was routed northeast out of Lyle, along what is now known as the Centerville Highway: through its eponymous town, ending at US 97 about four miles south of Goldendale.  ​This 1927 map attempted to illustrate that (note the lack of a road between Maryhill and Lyle):

The old routing of US 830 was still shown on this map, even though by this time the "new" US 830 had been completed between Lyle and Maryhill: