U.S. Route 101
The nearly highway's northern terminus is in Tumwater, Washington: the route remains along the Olympic Peninsula's coastal perimeter west, north, and east; the northernmost point on the highway is in Port Angeles. The southern terminus of US 101 is in Los Angeles at the East Los Angeles Interchange, the world's busiest freeway interchange.
Minnesota State Highway 101
State Highway 101 was defined, along with many other routes, by Chapter 440 of the 1933 Minnesota Session Laws:
Legislative Route No. 187. Beginning at a point on Legislative Route No. 18 [U.S. Highway 169] at or near Elk River, thence extending in a southerly direction to a point on Legislative Route No. 117 [State Highway 13] as herein established.
The Minnesota Department of Highways (now MnDOT) took over maintenance of the roadway in 1934. Highway 101 began at State Highway 13 in Savage, at the intersection of "Dakota Avenue" and "McColl Drive", and ran west on "McColl Drive" and "Eagle Creek Boulevard" to downtown Shakopee. Old Highway 101 crossed the Minnesota River with U.S. Highway 169, and crossed U.S. Highway 212 along the present day Carver County portion of Highway 101. From Shakopee to near Rogers, the original routing of Highway 101 matched the present day State Highway 101 and "County Road 101" except in downtown Chanhassen, where old 101 had followed "Great Plains Boulevard" and "78th Street" (the later State Highway 5), in downtown Wayzata, where old 101 followed "LaSalle Street" to "Central Avenue", and on the State Highway 55 / 101 concurrency at Plymouth / Medina, which was along "Old Rockford Road" and "Hamel Road". Instead of using old State Highway 152 (now County Road 81) into Rogers, old Highway 101 continued north on "Brockton Avenue" (now County 13) and crossed the Crow River at its mouth, then heading northwest and north on "River Road" and "Parrish Avenue" to the Parrish Avenue Bridge over the Mississippi River. Upon crossing the bridge, old Highway 101 entered Elk River and immediately ended at U.S. Highway 10 and U.S. Highway 169 via short pieces of "Main Street" and "Jackson Avenue".