National road 53 has GP-class parameters on the Olsztyn - Szczytno - Rozogi section, and G-class parameters on the Rozogi - Myszyniec - Ostrołęka section.[1]
History
National road 53 received its current number on 14 February 1986.[2] The earlier designation is unknown; on the then maps and road atlases, the artery was marked as the so-called a secondary road, without giving its number.[3][4][5][6]