When the US highway numbers were assigned in 1927, US 81 was the only route initially serving Waco. But US 77 soon joined with it, when it was extended down from Dallas in 1933. These routes were concurrent south of Hillsboro, and through Waco they followed New Dallas Highway, Hillsboro Drive, Elm Street, Washington Street, 18th Street, and Circle Road, to the Circle. From there they diverged, with US 77 following Robinson Road, and US 81 following the corridor now occupied by I-35.
Shrine Pass was not considered to be a good candidate for development into a primary state highway, so US 6 traffic was directed further south from Copper Mountain, along today's SH 91. Drivers had to go over Fremont Pass and all the way down to Leadville. There, traffic was directed north (overlapped with westbound US 24) over Tennessee Pass and up to Minturn.
The north terminus of US 3 is at a border crossing leading to Chartierville, Quebec. Since there is no town nearby on the American side, US 3 is often described as ending in Connecticut Lakes, New Hampshire. This is the name applied to the state forest that protects the upper reaches of the Connecticut River, where a chain of lakes is situated near its source. US 3 goes right past three of them:
At 568 miles*, Texas 16 is the longest state highway in Texas (that is, the longest road with a state highway designation, as opposed to a US route or an interstate). The second-longest is Texas 6, at 551 miles*. These two routes intersect in the town of De Leon. Actually, they overlap for about a half-mile:
In 2009 my father and my uncle found these photos -- taken by my paternal grandfather during the 1950s -- and gave them to me, knowing I would appreciate them. That was about 20 years after I had begun taking road sign photos of my own, and until then I had the mistaken notion that I was the first in my family to have this strange hobby. Is it possible that this sort of thing can be passed down through bloodlines?
It is common for two different US routes to overlap (meaning they are concurrent along the same highway for a certain distance before splitting apart again).
It is less common for three (or even more) US routes to overlap. For example, traffic heading west from Cody, Wyoming, towards Yellowstone is on US 14, US 16, and US 20 (all at the same time).
US 96 is one of the worst numbering violations in the US route system, because it is wrong on several levels:
At the time, the south terminus of US 59 was in Port Arthur, and the diagonal highway between Houston and Laredo was designated US 96: