Princess Margaret Bridge

Safety concerns have precipitated many construction projects on the bridge in the 1980s and 1990s, due in part to the narrow width of the roadway and to high traffic volume.

The bridge deck is prone to severe icing conditions in winter, leading to motor vehicle accidents.

The southern approach also contains an interchange with Forest Hill Road with very tight turning radius on exit and entrance ramps.

On three occasions, tractor trailers have failed to negotiate the turn, instead crashing through the guard rail and either dangling over the edge or falling into the river entirely.

In early May 2009, concerns were raised after a 10-kilogram chunk of concrete fell from the bridge onto the roadway underneath, narrowly missing a passing motorist's vehicle.