An 11‑kilometre stretch of the Métropolitaine commuter rail line in Montreal was closed from July 11 through July 13 after inspectors determined that recent construction work had been carried out incorrectly.
The segment, which serves a heavily used portion of the city’s commuter network, was taken out of service for the weekend, affecting passengers who rely on the line for daily travel.
Transport officials said the closure was necessary because the workmanship did not meet required standards, creating a risk to safe operation of trains along the affected corridor.
During the three‑day shutdown, crews are expected to assess the faulty sections, remediate the problems and verify that the track and related infrastructure comply with safety regulations before service can resume.
The interruption occurs while the Métropolitaine line typically experiences high ridership, a factor that affects the region’s public transit system.
The three‑day outage spans both Saturday, July 11, and Sunday, July 12, with service expected to resume on Monday, July 13, pending completion of corrective work.
The suspension of service on this segment may cause delays for passengers traveling to and from the city’s suburbs, as the line normally handles a large volume of trips during peak periods.
Transportation officials have said a comprehensive review of the construction procedures will be carried out to ensure that future work meets required standards and does not jeopardize the reliability of the commuter rail system.
The incident relates to quality‑control procedures in infrastructure projects that support daily commuter traffic across the metropolitan area.