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Union Station rail corridor: Metrolinx upgrading signals, maintaining tracks, starting May 1



Metrolinx crews continue the ongoing projects to upgrade the train-signalling system and maintain tracks in the Union Station rail corridor

Crews are:

  • containing cables - Bathurst to York Streets.
  • Crews work from 8 p.m. Saturday, May 2 until 5 a.m. Sunday, May 3 and continuing overnight nightly until 5 a.m. Saturday, May 9.
  • working on caissons - Lower Spadina Avenue
  • Crews are setting up construction of the signal towers above the tracks.
  • Crews work from 8 p.m. Monday, April 27 until 5 a.m. Tuesday, April 28 and continuing overnight nightly until further notice.
  • upgrading signals - Scott Street Crossover.
  • Crews work on caissons CA4 (north side) and CA5 (south side) (Signals 852-858).
  • From Friday, May 1 until Friday, May 8: Daylighting and planking the access pad.
  • From Tuesday, May 5 until Friday, May 8 (daytime): Set-up.
  • Saturday, May 9 and Sunday, May 10: (daytime): North-side caisson work - CA 4.
  • Installation between depot tracks 6 and 7, just north of Scott Tower paved crossing.
  • Crews work from 6 a.m. until 4 p.m., cleaning up the site after 4 p.m.
  • Work will be noisy.
  • Saturday, May 16 and Sunday, May 17 (daytime): South-side caisson work - CA 5.
  • Installation between depot tracks 6 and 7, just north of Scott Tower paved crossing.
  • Crews work from 6 a.m. until 4 p.m., cleaning up the site after 4 p.m.
  • Work will be noisy.
  • Monday, May 18 to Thursday, May 21 (daytime): Take-down.

  • Expect noise from drilling, hammering, high-mast day-lighting and back-up beepers, when trucks and other equipment reverse.

  • replacing ties - track E4 at Scott Street.
  • Crews work from 8 p.m. Saturday, May 2 until 5 a.m. Sunday, May 3 and from 8 p.m. Sunday until 5 a.m. Monday, May 4.
  • Expect noise from drilling, hammering, high-mast day-lighting and back-up beepers when trucks and other equipment reverse.
  • collecting litter - north side corridor between Yonge and Parliament Streets.
  • Crews work Saturday, May 9 and Sunday, May 10.
  • spraying vegetation - north side corridor between Yonge and Parliament Streets.
  • Crews work Monday, May 11 and Tuesday, May 12.
  • installing impedance bonds - north side of the tracks, between Lower Jarvis Street and Queen Street East.
  • This work on tracks E1 and E2 requires excavation and other equipment. Expect noise from drilling, hammering, high-mast day-lighting and back-up beepers when trucks and other equipment reverse.
  • Crews work from 8 p.m. Friday, May 1 until 5 a.m. Saturday, May 2 and continuing overnight nightly until 5 a.m. Wednesday, May 6.
  • working on caissons - north side of the tracks, between Parliament Street and Queen Street East.
  • Crews work from 8 p.m. Friday, May 1 until 5 a.m. Saturday, May 2 and continuing overnight nightly until 5 a.m. Friday, May 8.
  • Starting 8 p.m. Friday, May 1 - Caisson CA14 cap work east of Cherry Street and caisson CA9 cap work at Parliament Street, north of track E1.
  • Starting at 8 p.m. Monday, May 4 - Caisson CA11 cap work at Cherry Street, north of track E1.

  • changing ties - East track 9 at Lower Jarvis Street.
  • Crews work from 8 p.m. Friday, May 1 until 5 a.m. Saturday, May 2.
  • Expect noise from drilling, hammering, high-mast day-lighting and back-up beepers when trucks and other equipment reverse.
  • moving planks - Corktown area to Queen Street East.
  • Crews work from 8 p.m. Saturday, May 2 until 5 a.m. Sunday, May 3.
  • Expect noise from drilling, hammering, high-mast day-lighting and back-up beepers when trucks and other equipment reverse.
  • collecting litter - south side corridor between Yonge and Parliament Streets.
  • Crews work Saturday, May 2 and Sunday, May 3.

(According to Merriam-Webster Dictionary, an impedance bond is “an iron-core coil of low resistance and relatively high reactance… to provide a continuous path around insulated joints… and to confine the alternating-current signaling energy to its own track circuit.”)

“High-mast daylighting” refers to illuminating a work site using a lighting tower during overnight work. Otherwise, “daylighting” means opening up — exposing to light — a previously underground or covered structure, such as a tunnel.

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