Highway 401 Improvements from 1 km East of Highway 2/King Street to 2.78 km West of Mallorytown, Planning Preliminary Design and Class Environmental Assessment Study

Planning Preliminary Design and Class Environmental Assessment Study Ontario Ministry of Transportation

(G.W.P. 4050-22-00)

About the Project

The Ontario Ministry of Transportation (MTO) has retained AECOM Canada ULC to undertake a Planning, Preliminary Design and Class Environmental Assessment (EA) Study along Highway 401 for the replacement and rehabilitation of bridges and culverts, interchange modifications, and establishing the future Highway 401 footprint for an interim six lanes and ultimate eight lanes, from 1 km east of Hwy 2 / King St to 2.78 km west of Mallorytown. The purpose of the Study is to identify a Recommended Plan that addresses current and future transportation needs in the Study Area as part of the Ministry’s ongoing review of safety and operational needs for the provincial highway network. The Study Area falls within the United Counties of Leeds and Grenville, Township of Leeds and the Thousand Islands, Front of Yonge Township, and Town of Gananoque.

The study also includes:

  • Developing and evaluating alternatives

  • Identifying appropriate improvements

  • Determining potential impacts

  • Outlining environmental protection/mitigation measures

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