ok real quick New Englander-ism for Check Please fanfic writers that aren’t from here: We don’t say “the” before interstate highways we call by numbers. IE: Interstate 295 (the one that the boys would take between Providence and Samwell/Boston) is just referred to as 295 (Two-Ninty-Five). Interstate 95 is the same, though it’s also referred to as I-95.
Basically just avoid saying “the” before referring to a highway, unless you’re talking about the MassPike (Massachusetts Turnpike).
And as a side note, smaller highways such as route 2, route 9, etc are referred to as just that.