Grindstone Creek Bridge Construction Project

The City of Hamilton will replace the Grindstone Creek Bridge on Dundas Street East (Highway 5) between Mill Street and Reynold Street in Waterdown. This replacement is required due to the age and condition of the bridge.

Visit the City of Hamilton Project Page for construction details, the latest news and updates on detour routes.

Open for Business

Waterdown Village businesses remain open and ready to serve you throughout the project. Expect delays but please be patient and continue to visit. WE CAN help with what you need and look forward to seeing you.

Stage 1 Lane Restrictions

September 2025 for approximately one year

Beginning the week of September 29, traffic will be reduced to one lane on Dundas Street over the bridge. Traffic will alternate directions with eastbound movement form 2:00 AM – 2:00 PM and westbound movement from 2:00 PM to 2:00 AM. The north side of the bridge will be open to vehicular traffic, with the sidewalk on the north open for pedestrians. 

Detour Routes

• Click DETOURS on the city’s project page for the official detour and truck route.
• Use Google Maps, Waze and other way finder applications for the most up-to-date news, drive times and alternate routes to get to local businesses.
• Contact destination businesses for tips and best directions to their locations.

Thank you for your patience – it’s worth the detour!