Part of O-Train Line 1 tunnel to close for maintenance assessment

Published on
April 27, 2023
Parking, roads, traffic and transit

Part of the downtown O-Train Line 1 tunnel will be closed for a planned maintenance assessment during two weekends this spring. These closures will take place on Saturday, April 29 and Sunday, April 30, and again on Saturday, May 6 and Sunday, May 7.

During the closures, Line 1 will continue to run between Tunney's Pasture and Parliament stations in the west, and between Hurdman and Blair stations in the east. R1 bus replacement service will run frequently between Hurdman and Lyon stations to meet ridership requirements.

Regular train service will resume at 5 am on both Monday, May 1 and Monday, May 8.

The closures are required for Rideau Transit Group to assess the scope of repairs to prevent water infiltration in sections of the tunnel. Tunnel maintenance will take place in June, and any required changes to service will be communicated in advance of these works.  This type of regular inspection and maintenance is common for underground tunnels, and there are no safety concerns.

Customers can visit for travel planning assistance or call 613-560-5000. You can also connect with OC Transpo through Facebook, Twitter and Instagram. OC Transpo red vest staff will be present across the system and stationed in key areas to assist customers throughout the temporary service adjustments.

For more information on City programs and services, visit, call 3-1-1 (TTY: 613-580-2401) or 613-580-2400 to contact the City using Canada Video Relay Service. You can also connect with us through Facebook, Twitter and Instagram.