News ReleaseMinistry of TransportationPublished: July 28, 2026
Work begins to twin Highway 3 in St. Thomas to link to EV battery plant
Construction and enabling works have started on nearly 7 km of Highway 3 to improve safety and create a direct route to the PowerCo EV battery plant; full twinning begins in 2027.
Summary
What is happening#
- Construction and enabling works (utility relocations and grading) have started to twin nearly 7 km of Highway 3 in St. Thomas, from Centennial Avenue to Ron McNeil Line.
- Full twinning construction is scheduled to begin in 2027.
Where and who it affects#
- Location: St. Thomas and Elgin County, connecting to the Talbotville Bypass and Highway 401.
- Affects: local drivers, commuters, workers headed to the St. Thomas Industrial Park and the nearby PowerCo EV battery plant (Volkswagen investment).
By the numbers (stated in the release)#
- Project segment: almost 7 kilometres (Centennial Ave → Ron McNeil Line).
- Volkswagen announced a $7‑billion investment for the EV battery facility in April 2023.
- Provincewide highway investment cited: approximately $31 billion over 10 years.
Why it matters#
- Improves safety and travel times on a key route.
- Creates a direct connection for workers and freight to the new EV battery plant and Highway 401, supporting regional economic and housing growth.
Other details from the release#
- Enabling works underway now; full twinning construction begins in 2027.
- Dufferin Construction was named for the utilities contract in project announcements.
- Multiple regional business and construction groups and municipal leaders welcomed the progress.
Related links
Source: Ontario Newsroom