Lambton County

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Road Closure Graphic The following temporary closures and detours on County Roads are required due to seasonal construction. Motorists are advised to follow the appropriate detour routes around areas. Your patience and cooperation are appreciated.

Although this list is intended to be comprehensive, unavoidable emergency closures and minor closures are not listed.  Be sure to check back for updates.

County Road #4 (Petrolia Line)

County Road #4 (Petrolia Line) will be closed to through traffic between County Road #8 (Inwood Road) and County Road #79 (Nauvoo Road) for road reconstruction effective Tuesday, June 5 through Friday, August 31, 2018.

The limits for this project will be Little Ireland Road to Old Walnut Road.

The detour route will be County Road #8 (Inwood Road), County Road #80 (Courtright Line) and County Road #79 (Nauvoo Road).

Local traffic will be permitted through the site at night but no through traffic during the day where road excavations are underway.

Please be aware of the speed reduction and expect delays.