Re:A Ride Along the Lincoln Highway
The numbering pattern for US highways is the opposite of that for the Interstate system (basically)
US highways are even numbered for E-W with the lower number in the North and Higher Numbers in the South. The odd numbers run N-S with the lowest in the East and the Highes in the West.
The Interstates run just the Opposite-- Evens run E-W but start in the Southern USA while the higher numbers run further North. Odd numbers do run N-S but start on the West Coast and work their way up the scale as you go East.
Thus the highest junction for the US Highway system was US 101 and US 90 in San Diego, Cal. and the lowest would have been US 1 and US 2 somewhere in Maine. While the Interstates Highest interchange would be/ is I-95 ( I think) and I-90 in Boston?? and the lowest is I-5 and I-8 in San Diego.
Funny how the major routes jump from I-40 to I-70 in numbering the Coast to Coast highways...no I-50 or I-60 for the MAJOR Interstates. I-20 and 30 both only go about 1/2 way across the country.
In our roadtrips over the years we have traveled I-10, 20, 30, 40, 70, 80, and 90, Coast to Coast and of the N/S running roads I-5, 15, 25, 55, 65, 75 Border to Border or end to end...and have done I-35 and 95 in all their states but not all the way south to Miami and north to Portland, ME (95) then only between I-90 in MN and to I-10 in TX (I-35)
I won't attempt to desctribe the three-digit numbering system as there IS A SYSTEM...but there seems to be so many exceptions to it that it doesn't hold up well for definition (Spurs and By-Passes)
For us the one we identify with most often is I-35. It runs (for us) N-S from Minnesota to Texas thru the 'Czech Immigration "Belt" in Mid-America. We have visted many small towns from New Prague, MN down to WEST and Schulenberg, TX that identify with their original CZECH settler beginnings. Festivals, Museums, and Heritage celebrations abound in a path a hundred or so miles wide along I-35 each year. I am sure other ethnic groups have similar locations, but that's why we enjoy our travels along I-35.