Traffic & Construction Updates – Construction Progress Updates

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Construction information will be posted as construction progresses.
  • November 2019 – Traffic crossover of Highway 401 is no longer in effect; one lane of traffic is open for each of the eastbound lanes and westbound lanes. Union Road and the Union Road interchange has been restored to previous access and egress conditions. Remaining work on the westbound lane pavement and centre-median ditch continues.
  • July 2019 – Grading of the highway continues, existing structural box culverts are being replaced with new box culverts. Stage 1 of Union Road underpass is fully complete and traffic was re-routed onto new portion of bridge on July 18, 2019. Stage 2 demolition of Union Road underpass was completed on July 20, 2019. Paving of the drainage layer for the highway has started and will occur during the evenings. Concrete rehabilitation works were finished at the Dodd Creek structures.
  • June 2019 – Removals continue for the existing concrete base and grading of the highway has begun. Pipe and box culverts are being replaced. Stage 1 of the Union Road deck was poured and finished.
  • May 2019 – Dodd Creek eastbound lane approach slabs and concrete overlay is poured. Concrete base removals and ditching are continuing.
  • April 2019 – Asphalt and concrete base removals begin in the eastbound lanes of Highway 401. Ditching alongside the new eastbound lands has started. East side of Union Road underpass demolished on April 27, 2019.
  • April 16, 2019 – Traffic was switched to staged construction (i.e., one lane in each direction) and will be maintained until November 2019.
  • April 1, 2019 – Union Road structure reduced to one lane with signals. Driver should cross the bridge only when the signal is green.
  • November 12, 2018 – Dodd Creek bridge is waterproofed and paved, shoulders are being paved on Highway 401.
  • October 2018 – Highway 401 machine concrete paving work is completed, overlay on Dodd Creek is poured and the concrete deck for Mill Road is poured.
  • September 2018 – Beginning of concrete paving operations, work continues on the drainage layer and bridge structures. Sewers and drainage completed for the season.
  • September 4, 2018: Installation of structural box culverts for Lewis Drain has started. Paving of the drainage layer continues during night time work.
  • July 10, 2018 – Work continues on the Highway 401 WBLs. Asphalt has been removed. The old concrete base is currently in the process of being removed. 
  • July 1, 2018 – Happy Canada Day! 
  • June 23, 2018 – Mill Road deck has been demolished. Mill Road will reopen to traffic by September 14, 2018.
  • May 29 to June 8, 2018 – Preparations for the crossover continues. Temporary Concrete Barriers are being placed along the construction site.  
  • May 10, 2018 – Median Construction continues in preparation of the shifting of traffic to one side.
  • April 24, 2018 – Construction is underway. Crews are completing temporary work to transition to Season 1’s staging configuration.
Bridge Work
Bridge Construction Work
Showing the open lanes on Highway 401 as well as the new paved surface on the other lanes.