|U.S. Routes © Cameron Booth|
I have to say that without a doubt, this is the most complex network that I have yet attempted. Not only are there far more numbered routes than in the Interstate system, but there are also historical extensions and branches of many routes to consider.
|U.S. Routes — Detail: Michigan and Wisconsin © Cameron Booth|
In some cases, numbers that were used once were reused in different parts of thecountry (see U.S. 48, which has been used for three completely separate roads!). I have attempted to show these historical roads as thinner route lines "behind" the main network, including the most famous U.S. highway of all — Route 66, which gets special treatment, being solid black in colour.
|U.S. Routes — Detail: Texas © Cameron Booth|
According to Booth, "The U.S. Routes [mainly] conform to a numbered grid system." I agree with The Economist, this map is very impressive. It apparently has taken Cameron Booth well over a year to complete, the designer confesses.
|U.S. Routes — Detail: Pacific North West © Cameron Booth|
[…] I restarted my work on three separate occasions, each time almost convinced that this map was impossible. This last time, I started at the most complex intersection of roads on the map — Memphis, Tennessee — and solved it first. Once that resolved itself, clues were revealed as to how to approach the rest ot the map and things got a lot easier.
|U.S. Routes — North East Atlantic Coast © Cameron Booth|
So much so, that in the end, I was even able to add some of the longer "child" three-digit routes, some of which are actually longer than their so-called "parent" route. U.S. 191 runs from Canada to Mexico, while U.S. 91 has been cut back down over the decades to a very short stretch between Idaho Falls, ID and Brigham City, UT.
|U.S. Routes — Detail: Florida © Cameron Booth|
A nice work, to conclude.
More: The Economist and Cameron Booth.