Highway 510 (Ontario)

Highway 510 is one of Ontario's shortest numbered highways at 2.8 km (1.7 miles) in length (Highway 20 is 1.9 km). It follows Nipissing Road from the village of Magnetawan to Highway 124.

The road surface is in very poor condition, as very little maintenance has been done since it was originally paved. Therefore, traffic volumes are extremely low on the highway.

In autumn 2007, the Province of Ontario reconstructed Highway 510. The highway is now in good condition.