I'm guessing there's a bit of road where Interstate 93 northbound shares lane with Route 128 southbound.
At a guess it's a bit that goes roughly east/west.
Reductionist and proud of it.
Being ignorant is not so much a shame, as being unwilling to learn. Benjamin Franklin
Chase after the truth like all hell and you'll free yourself, even though you never touch its coat tails. Clarence Darrow
A person who won't read has no advantage over one who can't read. Mark Twain