McHenry County Highway A42 Exits/Junctions (forward) backward Timeline format searchMAPJunction @ South Union Rd(IL:McHenry T65), near Union, IAHotels | Nearby | Junction Close Look MAPJunction @ Dunham Rd, near Union, IAHotels | Nearby | Junction Close Look MAPJunction @ E Grant Hwy(US 20), near Marengo, IAHotels | Nearby | Junction Close Look