. US 10 was one of the imposing original highways: forever 40 years it stretched form Detroit to Seattle. Now that most of its original route is intimately matched by newer interstates, it's been declined to a simple shadow of its previous self: it survives only amid Bay City MI and Fargo ND.
. Nevertheless, US 10 still retains one of its rare characteristics: it is one of only two existing US highways whose route comprises a ferry section (the other is US 9).
. Originally traffic was going to into town on Rainier Avenue and Dearborn Street. Then US 10 slanting northwest on Airport Way and ended at 4th Avenue, which was US 99.
. Initially US 10 started to the left. But later, in the 1950's, when US 99 was rerouted along the Alaskan Way Viaduct and tunnel, US 10 was expanded along the previous route of US 99 through downtown.
. 1969 saw the primary in a series of midway truncations of US 10, as segments of its substitute (I-90) were finished. By five years the length of US 10 had been declined by almost 500 miles, and it no longer lasted in Washington or Idaho.
. By 1986 the US 10 title had been taken out from all of Montana, and most of North Dakota, shortening its length by a further 900 miles. Nowadays the west end of US 10 is west of Fargo, at its interchange with I-94.
. Today US 10 starts by exiting to the right, then passing over I-94, and then commencing on the alignment straight to the lead. At that point, the initial eastbound US 10 marker is been posted.
![American Highway Code US Route 10[II] Map](us10.gif)
