That bridge was for the Toronto Suburban Railway--an early interurban light rail line that took passengers from Keele and Dundas to Guelph.
`St. Clair Avenue West Area - Transportation Master Plan
Notice of Public Event
From this link:
Date: Wednesday December 2, 2015
Time: 6:30 - 8:30pm, presentation at 7:00pm
Location: Joseph J. Piccininni Community Centre, 1369 St. Clair Avenue West
What solutions are being studied?
1. Widen St. Clair Avenue West to provide 2 lanes per direction between Old Weston Road and Keele Street. The streetcar
would continue to operate in a dedicated right-of-way.
2. Extend Gunns Road east. Gunns Road would extend across the railway tracks to connect to Turnberry Avenue at Union Street, creating a new east-west connection.
3. Connect Davenport Road to Lloyd Avenue. Davenport Road would extend west from Old Weston Road across the railway tracks and create a new road from Old Weston Road to Keele Street.
4. Extend Keele Street south to meet the Gunns Road extension between Weston Road and Union Street to create a new north-south and east-west connection.
5. Extend Davenport Road northwest to Union Street, in addition to Option 4. This new road would cross St. Clair Avenue on a bridge and create new road connections both north and south of St. Clair Avenue.
The extension of Davenport Road bridged over to connect to West Toronto Street. This will allow east-west traffic flow while reducing the number of vehicles travelling through St.Clair Avenue West.
They are also provisioning for Presto infrastructure, in addition to the work noted by innsertnamehereIf it's just the platforms that need altering why not keep running the streetcars and have people wait at the sidewalks.