A Depth of Knowledge

McNally International Inc. and its group of companies started in 1949, under the name S. McNally & Sons Limited. Post-war house building was the main activity in the early years but soon changed to heavy civil engineering projects.

Joseph McNally led the growth of the company during the 1950s and 1960s, successfully completing major projects, including construction of:  Ashbridges Bay Wastewater Treatment Facility; the Yonge St. Subway in Toronto; and the Bruce Nuclear Water Intake.

Over the years the company has been involved in a variety of projects, ranging from conventional bid, design build, design build finance, and negotiated contracts.  McNally has become synonymous with difficult and demanding projects; numerous projects throughout Canada and the United States bear the McNally trademark of quality and workmanship.

Completing the Most Challenging of Projects

Numerous projects throughout Canada and the United States bear the trademark of sound structural quality and workmanship.  The expansion of the York Durham Sewer system, construction of the Edmonton SLRT, the Columbus Ohio Big Walnut Creek sewer and the Enwave Deep Water Cooling Intake are a testament to the dedication and hard work our people put behind every project.  To learn more about the projects we have complete, please view the Projects section of the website.

Tunnel Construction

McNally is recognized as Canada’s leading Tunnel Contractor, with experience building tunnels with a wide range of tunneling methods, for end uses including utilities (water, sewer, steam, power transmission,) and transportation (subways, traffic pedestrians walkways).

In the 1980’s, McNally Tunneling Corporation was started for operations in the United States. Based in Cleveland, OH, McNally Tunneling has completed projects in Birmingham, Cleveland, Houston, Seattle, Chicago, Minneapolis and Columbus.

In addition to completing challenging tunnel construction projects throughout the company history, McNally has also undertaken manufacturing of precast concrete segmental liners.

Marine Construction

In the 1990’s, McNally expanded the scope of the business purchasing the marine assets of several companies, including: Beaver Construction Group of Montreal; Canadian Dredge and Dock; Pitts Engineering; and MacNamara Marine. McNally’s Construction’s marine operations are one of the best equipped and manned construction fleets anywhere in Canada, capable of completing marine construction or dredging projects anywhere in the Great Lakes, St. Lawrence River and Eastern Canada.