I-205 was being built when I was growing up in Oregon City, Oregon - the freeway had started south, and had made it to Oregon City, but no further north. My brother and I both had Honda 50 trail bikes and rode all over it - until we got chased away by the police..... and yeah, we ditched them (though, in retrospect, I think the cops were having a huge amount of fun "chasing" us up the dirt right-of-way)
I 495, the DC Beltway loops around the entire town, built in the early 60's was nothing but a mystery road, and used as a dragstrip by many guys....
can't even get ON the damn thing now, at 3 AM, total gridlock....When wife and I were dating, she being a native Florida gal, never been to DC, we ride up to show her the town, we on I 95 heading north, get to Fredricksburg Va. where the little 2 lane road turn into 3-4 lanes each way, her eyes get larger, I"m cruising left lane at 80 mph and the other lanes are bumper/bumper doing the basketweave at every interchange, she turns white as a ghost, ME, Hell, I"m used to it,
she had never been on a subway, PHREAK OUT TIME....Red Line through Montgomery County from Rockville into center of DC....
but our first stop was Arlington, National Cemetery, changing of the guard....
then we did the usual tourist stuff.....
on the way back, I asked what was the most impressive thing she saw on the week long excursion.....she immediately relied, 'Arlington'....
This was in '98 when we still dating, so before 9/11 and so we could actually see the town, I dunno what it is today....