The Addington Road
This Colonization Road extended for about 117 km northward from the Clare River in Sheffield Township to the Peterson Road in Brundell Township. It formed part of a network of government roads built to open up the southern region of the Pre-Cambrian Shield. From 1854 to 1857 Aylsworth B. Perry, a local surveyor, supervised construction of the road from the Clare River to the Madawaska River. A 19 km extension northward to the Peterson Road was added during 1863 - 64. Settlement of the "free-grant" lands along the route progressed rapidly and by 1862 the population totalled about 800. Although parts of the road were later abandoned, considerable sections were incorporated into the present Highway No. 41.
Plaque via Alan L. Brown's site Ontario Plaques. Full page here.