When a railway line is abandoned, the steel rails are usually the first thing to go. They have scrap value and are typically pulled up within a few years of a line's closure. But everything else, the graded roadbed, the rock cuts, the bridge abutments, the station platforms, tends to remain. These remnants are among the most enduring and widespread historical artifacts in Ontario, marking routes that once connected every community in the province.
The rail history of Ontario produced a network of extraordinary density. At its peak, the province had thousands of kilometres of track operated by dozens of companies. The abandonment of much of this network has left a corresponding number of remnants, scattered across every region from the Niagara Peninsula to the shores of Hudson Bay.
What Survives
The most common rail remnant is the roadbed itself. Railway construction required a level, well-drained surface, and the graded beds were built to exacting standards. Cut through rock where necessary, built up with fill across low areas, and topped with crushed stone ballast, they were engineered to be permanent. After the rails are removed, the roadbed persists as a flat, linear feature cutting through the landscape, often clearly visible decades after abandonment.
Rock cuts are the most dramatic remnants. Where a rail line passed through a ridge of bedrock, the railway companies blasted and excavated a passage wide enough for the tracks. These cuts, often several metres deep with vertical stone walls, are spectacular features that will last for centuries. Walking through an old rock cut on an abandoned line, with ferns growing from the walls and the sky visible as a narrow strip above, is one of the more atmospheric experiences that Ontario's abandoned infrastructure has to offer.
Bridge abutments mark every river, creek, and ravine crossing on an abandoned line. Built of massive cut stone or poured concrete, they were designed to support the weight of fully loaded freight trains and are almost indestructible. On some lines, the steel bridge span has been removed but the abutments remain, standing like gateposts on either side of the crossing. In other cases, the entire bridge remains, fenced off and slowly rusting.
The graded roadbeds and rock cuts of Ontario's abandoned railways will outlast most other evidence of the province's industrial era.
Notable Remnants
The former Kingston and Pembroke Railway, known locally as the K&P, ran from Kingston north through the Shield country to Renfrew. Abandoned in stages from the 1960s through the 1980s, the line left behind a trail of remnants through some of the most scenic terrain in Eastern Ontario. Rock cuts, bridge abutments, and station sites mark the route from the limestone plain of the south through the granite of the Shield.
In the Ottawa Valley, the former Canadian Northern Railway line through the Algonquin Highlands is perhaps the most famous abandoned rail corridor in the province. The line ran through remote, rugged country, requiring extensive bridges and rock cuts. Sections of it are now used as recreational trails, but much of the route remains isolated and accessible only on foot.
The Petawawa area has its own collection of rail remnants, including bridge abutments and grade crossings that mark where the railway once served the lumber industry and the military base.
Rail Trails and Conservation
The conversion of abandoned rail corridors to recreational trails has been one of the more successful heritage conservation stories in Ontario. The Cataraqui Trail, the K&P Trail, sections of the Trans Canada Trail, and numerous local trails follow former rail routes. These trails preserve the corridors and the remnants along them, while providing public access to linear landscapes that would otherwise be fragmented among dozens of private properties.
Not all abandoned lines have been converted to trails, however, and some of the most interesting remnants are on lines that have simply been left to revert to nature. These lines offer a different kind of exploration experience: less maintained, more overgrown, and with a stronger sense of discovery.