The Opeongo Road
This was one of the "colonization roads" authorized by the Province of Canada in an attempt to open up the districts lying inland from the settled townships. Surveyed in 1852 by Robert Bell, P.L.S., 160 km were completed by January, 1854 as a winter road from the Ottawa River at Farrell's Landing to Opeongo Lake. By 1867 some 125 km of road were open for year-round traffic, but further construction had been abandoned. In 1855 T.P. French was appointed to supervise settlement, and free 40 ha lots were offered along the road, which brought many settlers to Renfrew County and aided the region's important lumbering industry.
Plaque via Alan L. Brown's site Ontario Plaques. Full page here.