I don’t even know if this is meant to refer to a specific highway:

My transcription from the recording at the Internet Archive:


NEW HAMPSHIRE HIGHWAY
(Robison)
As recorded by Willard Robison and his Piano on Perfect 12384 B, 1927.

VERSE: I’m home again from such a grand vacation.
My trip has not been all in vain.
Amid the views of old New Hampshire
I found the real lover’s lane.

CHORUS: New Hampshire highway, I have this much to say:
It broke my heart to leave you.
Contentment everywhere amid your scenes so rare,
They thrilled me through and through.
I found someone to love me
In that good old-fashioned way.
New Hampshire highway, I have this much to say:
I’ll come again someday.