One year later, SR 598 was extended to the northeast along a previously un-numbered roadway, then northerly along a brief overlap of SR 61 and a short state highway that had carried the SR 289 designation to its current northern terminus at what was then the predecessor to SR 103, SR 194.
One year later, SR 598 was extended to the northeast along a previously unnamed road, then northerly along a brief overlap of SR 61 and a short state highway that had carried the SR 289 designation to its current northern endpoint at what was then the predecessor to SR 103, SR 194.