Highway 4 road conditions
Closures, winter road conditions, construction and collisions on Highway 4, in order along the road.
Highway 4: no full closures reported
As of 4:38 p.m. EDT. 4 entries; latest update October 2, 2026.
Collisions and incidents now 0
Lane closures and construction 4
- Lane closuresouthbound
Construction between Tempo Road and Clinton Line, St Thomas
Since Tue, May 19, 7:00 a.m. EDT
Daily Construction on HWY 4 Southbound between Tempo Road and Clinton Line, St Thomas. 1 Right Lane(s).
511 Ontario · ON · updated May 15, 2026
- Lane closuresouthbound
Construction at Tempo Road, St Thomas
Since Fri, Sep 11, 7:00 a.m. EDT
Daily Construction on HWY 4 Southbound between Tempo Road and Tempo Road, St Thomas. 1 Alternating Lane(s).
511 Ontario · ON · updated September 4, 2026
- Lane closuresouthbound
Construction at Tempo Road, St Thomas
Since Fri, Sep 25, 7:00 a.m. EDT
Daily Construction on HWY 4 Southbound between Tempo Road and Tempo Road, St Thomas. 1 Left Lane(s).
511 Ontario · ON · updated September 24, 2026
- Lane closuresouthbound
Maintenance at Tempo Road, St Thomas
Since Mon, Oct 5, 7:00 a.m. EDT
Daily Maintenance on HWY 4 Southbound between Tempo Road and Tempo Road, St Thomas. 1 Alternating Lane(s).
511 Ontario · ON · updated October 2, 2026
Traffic cameras 8
All 8 cameras →Highway 4 near Fifteen Mile Road — Looking South
511 Ontario, Ministry of Transportation of Ontario
Highway 4 near Fifteen Mile Road — Looking Down
511 Ontario, Ministry of Transportation of Ontario
Highway 4 near Fifteen Mile Road — Looking North
511 Ontario, Ministry of Transportation of Ontario
Highway 4 at Clinton Line — Looking North
511 Ontario, Ministry of Transportation of Ontario
Highway 4 by email, every morning
Collisions, winter road conditions and closures on Highway 4 at 6:00 a.m. Eastern. Free, and one click to stop.
More options: more highways, provinces, or Mondays only.
What we cover in Ontario
- Construction and lane closuresLive · 511 Ontario, Québec 511 (MTMD), City open data (Toronto, Vancouver, Calgary)
- Collisions and incidentsLive · 511 Ontario, Québec 511 (MTMD), City open data (Toronto, Vancouver, Calgary)
- Winter road conditionsLive · 511 Ontario, Québec 511 (MTMD), City open data (Toronto, Vancouver, Calgary)