A highway (although everyone on the East Coast uses "route" rather than "highway" - like pop/soda argument). See the route/highway argument.
It runs through campus, from east to west.
Or west to east.
Depending on which way you want to look at it. See also the logic behind road numbers.
According to Prof. Wood, Route 2 cutting through the middle of campus would make Williams College very difficult to defend were we attacked by two Roman legions.
Bob Quay '04 authored a senior history thesis about its history.
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