 The state highway gradually curves to the north through Shawsville, where MD 23 intersects two highways that head west into Baltimore County, MD 138 (Troyer Road) and MD 439 (Old York Road).The state highway makes a sharp, curvaceous descent to a crossing of Deer Creek, next to which is the historic Ivory Mills complex.MD 23 ascends out of the forested creek valley into Norrisville and meets the north end of MD 136 (Harkins Road).