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Built Heritage Resources & Cultural Heritage Landscapes - Lakeshore East Joint Corridor

← Return to Early Works: Lakeshore East Joint Corridor

Key Findings

  • A total of 11 built heritage resources/cultural heritage landscapes (BHRs/CHLs) have been identified within the study area:
    • 840 Gerrard Street East;
    • Carlaw Avenue Subway and Gerrard Street East Subway;
    • 400 Carlaw Avenue;
    • 1 Dickens Street;
    • Riverdale Heritage Conservation District;
    • Queen Street East - Riverside Heritage Conservation District;
    • 6,8,10 Paisley Avenue;
    • 15-17 Tiverton Avenue;
    • 60-62 McGee Street;
    • De Grassi Street streetscape between Queen Street East and Wardell Street; and
    • 369 Carlaw Avenue.
  • Of the BHRs/CHLs that have been identified, three have the potential to be directly impacted by early works (the Riverdale Heritage Conservation District, 6, 8, and 10 Paisley Avenue, and De Grassi Street streetscape).
  • Of the BHRs/CHLs that have been identified, five have the potential for indirect vibration impacts by early works (400 Carlaw Avenue, Riverdale Heritage Conservation District, Queen Street East - Riverside Heritage Conservation District, 6, 8 and 10 Paisley Avenue, 15-17 Tiverton Avenue).

Lakeshore East Joint Corridor Early Works Built Heritage Resources & Cultural Heritage Landscapes Study Area

Potential Effects & Mitigation Measures

Potential Effects:

  • Potential vibration impacts are anticipated to the building at 400 Carlaw Avenue, Queen Street East – Riverside Heritage Conservation District, 6, 8 and 10 Paisley Avenue, Riverdale Heritage Conservation District, and 15 and 17 Tiverton Avenue.

Mitigation Measures:

  • Document (review and establish) the structural condition of the affected buildings to determine if they are vulnerable to vibration impacts from early works.
  • Establish vibration limits based on structural conditions, founding soil conditions and type of construction vibration to ensure no damage to heritage structures.
  • Implement vibration mitigation measures on the construction site and/or at the building.
  • Monitor vibration during construction using seismographs, with notification by audible and/or visual alarms when limits are approached or exceeded.

15 and 17 Tiverton Avenue

15 and 17 Tiverton Avenue.
Source: AECOM, 2020.

400 Carlaw Avenue

400 Carlaw Avenue.
Source: AECOM, 2020.

6, 8 and 10 Paisley Avenue

6, 8 and 10 Paisley Avenue.
Source: AECOM, 2020.

Potential Effects & Mitigation Measures

Potential Effects:

  • Encroachment into the Riverdale Heritage Conservation District, 6, 8 and 10 Paisley Avenue, and the DeGrassi Streetscape between Queen Street East and Wardell Street.
  • Modifications to the Queen Street East subway may result in direct impact to the Heritage Toronto Plaque located on the sidewalk on the north side of the structure.

Mitigation Measures:

  • Consult with City of Toronto’s Heritage Planning as planning progresses:
    • regarding any physical impact to the Heritage Conservation District, including, if required, the demolition of the non-contributing building of 240 and 242 First Avenue, in order to determine and obtain any approval or permits required, and restoration of vegetative elements;
    • regarding any physical impact to the properties in order to determine and obtain any approval or permits required; and
    • regarding any physical impact to the streetscape and its heritage attributes (i.e. historical plaques) in order to determine and obtain any approval or permits required.
  • If removal/relocation of the Heritage Toronto Plaque near the Queen Street East subway can be avoided during early works construction:
    • mark the plaque on detailed design drawings as “to be retained: implement protection measures prior to construction”; and
    • install protection measures such as box or fence hoarding, prior to construction.
  • If avoidance of the Heritage Toronto Plaque during early works construction is not feasible and removal/relocation is required:
    • mark the plaque on the detailed design drawings as “remove prior to construction, store, reinstate post-construction”;
    • determine an appropriate removal plan and storage location and remove plaque prior to construction; and
    • reinstate plaque near the bridge postconstruction, preferably in the same location as pre-removal.

De Grassi Street streetscape

De Grassi Street streetscape.
Source: AECOM, 2020.

Heritage Toronto Plaque on the Queen Street East subway

Heritage Toronto Plaque on the Queen Street East subway.
Source: AECOM, 2020.

← Return to Early Works: Lakeshore East Joint Corridor

Submissions are closed.