 Route 503 | ||||
|---|---|---|---|---|
| Grenfell Drive | ||||
 Route 503 highlighted in blue | ||||
| Route information | ||||
| Maintained by Newfoundland and Labrador Department of Transportation and Infrastructure | ||||
| Length | 5.2 km (3.2 mi) | |||
| Major junctions | ||||
| South end | Snow’s Drive / Bowater Drive in Wabush | |||
| North end |  Route 500 (TLH) in Wabush | |||
| Location | ||||
| Country | Canada | |||
| Province | Newfoundland and Labrador | |||
| Highway system | ||||
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Route 503, also known as Grenfell Drive, is a 5.2-kilometre-long (3.2 mi) north–south highway in the Labrador West region of southwestern Labrador. It connects Wabush with the Trans-Labrador Highway and the town of Labrador City.