Ontario Secondary Highway 503 Historical Route Maps

Route of Secondary Highway 503 as it appears today Base map excerpt from the 2003 Official Ontario Road Map  -  © King's Printer for Ontario, 2003 Alterations & Additions by Jay LaRochelle - © 2003-2026

Links to Other King's Highway Website Pages: Back to Secondary Highway 503 Page Ontario Highway History - Main Menu   /    Back to List of Highways Website contents, photos & text © 2002-2026, Cameron Bevers (Webmaster) - All Rights Reserved  /  Contact Me