The highway then curves east and enters the city of Mulvane becoming West Bridge Street. It continues another  to an at-grade crossing with a BNSF Railway track then curves north and becomes 1st Street. K-53 continues for about  then turns east onto Main Street.
The highway changes direction to the east as it enters Mulvane, becoming West Bridge Street. It extends further until it intersects with a railway track, then turns north and becomes 1st Street. K-53 travels onward before turning east onto Main Street.