Highways adjectives are listed in this post. Each word below can often be found in front of the noun highways in the same sentence. This reference page can help answer the question what are some adjectives commonly used for describing HIGHWAYS.
american, ancient, better, broad, busy, commercial, common
crowded, dusty, federal, free, good, great, important
improved, interstate, lane, local, main, major, many
military, modern, more, multilane, national, natural, new
ocean, old, only, open, ordinary, other, paved
principal, public, roman, rural, scenic, such
Hope this word list had the adjective used with highways you were looking for. Additional describing words / adjectives that describe / adjectives of various nouns can be found in the other pages on this website.