Is Highway 401 closed today?

No full closure of Highway 401 is reported at the moment.

Highway 401 road conditions

Windsor to the Quebec border through London, Toronto and Kingston: the busiest highway in North America. Closures, winter road conditions, construction and collisions on Highway 401, in order along the road.

Highway 401: no full closures reported

As of 3:10 p.m. EDT. 71 entries; latest update 1 day ago.

Collisions and incidents now 0

No collisions or incidents reported on Highway 401.

Lane closures and construction 24

Lane closureeastbound
Construction at Gracey Side Road, Windsor
Since Sat, Oct 10, 12:00 a.m. EDT
Daily Construction on HWY 401 Eastbound between Gracey Side Road and Gracey Side Road, Windsor. 1 Left Lane(s).
511 Ontario · ON · updated September 25, 2026
Lane closureeastbound
Construction at Gracey Side Road, Windsor
Since Mon, Oct 5, 12:00 a.m. EDT
Continuous Construction on HWY 401 Eastbound between Gracey Side Road and Gracey Side Road, Windsor. 1 Left Lane(s).
511 Ontario · ON · updated October 2, 2026
Ramp closureeastbound
Construction, on-ramp at Highway 4 / Colonel Talbot Rd, London
Since Tue, Apr 7, 7:00 a.m. EDT
Continuous Construction on HWY 401 Eastbound On-ramp at Highway 4 / Colonel Talbot Rd, London. ALL LANES CLOSED.
511 Ontario · ON · updated April 2, 2026
Ramp closurewestbound
Construction, off-ramp at Highway 4 / Colonel Talbot Rd, London
Since Tue, Apr 7, 7:00 a.m. EDT
Continuous Construction on HWY 401 Westbound Off-ramp at Highway 4 / Colonel Talbot Rd, London. ALL LANES CLOSED.
511 Ontario · ON · updated April 2, 2026
Ramp closurewestbound
Construction, on-ramp at Highway 4 / Colonel Talbot Rd, London
Since Tue, Apr 7, 7:00 a.m. EDT
Continuous Construction on HWY 401 Westbound On-ramp at Highway 4 / Colonel Talbot Rd, London. ALL LANES CLOSED.
511 Ontario · ON · updated April 2, 2026
Ramp closureeastbound
Construction, off-ramp at Highway 4 / Colonel Talbot Rd, London
Since Tue, Apr 7, 7:00 a.m. EDT
Continuous Construction on HWY 401 Eastbound Off-ramp at Highway 4 / Colonel Talbot Rd, London. ALL LANES CLOSED.
511 Ontario · ON · updated April 2, 2026
Ramp closureeastbound
Construction, on-ramp at Highway 4 / Colonel Talbot Rd, London
Since Tue, Apr 7, 7:00 a.m. EDT
Daily Construction on HWY 401 Eastbound On-ramp at Highway 4 / Colonel Talbot Rd, London. ALL LANES CLOSED.
511 Ontario · ON · updated May 1, 2026
Ramp closureeastbound
Construction, on-ramp at Highway 4 / Colonel Talbot Rd, London
Since Fri, Jun 12, 7:00 a.m. EDT
Daily Construction on HWY 401 Eastbound On-ramp at Highway 4 / Colonel Talbot Rd, London. ALL LANES CLOSED.
511 Ontario · ON · updated June 12, 2026
Lane closureeastbound
Construction at Highway 4 / Colonel Talbot Rd, London
Since Mon, Jul 13, 7:00 a.m. EDT
Daily Construction on HWY 401 Eastbound between Highway 4 / Colonel Talbot Rd and Highway 4 / Colonel Talbot Rd, London. 1 Right Lane(s).
511 Ontario · ON · updated July 10, 2026
Lane closureeastbound
Construction at Highway 4 / Colonel Talbot Rd, London
Since Fri, Sep 25, 7:00 a.m. EDT
Daily Construction on HWY 401 Eastbound between Highway 4 / Colonel Talbot Rd and Highway 4 / Colonel Talbot Rd, London. 1 Left Lane(s).
511 Ontario · ON · updated September 24, 2026
Lane closureeastbound
Construction at Highway 4 / Colonel Talbot Rd, London
Since Mon, Oct 5, 7:00 a.m. EDT
Daily Construction on HWY 401 Eastbound between Highway 4 / Colonel Talbot Rd and Highway 4 / Colonel Talbot Rd, London. 1 Alternating Lane(s).
511 Ontario · ON · updated October 2, 2026
Lane closureeastbound
Construction at Highway 4 / Colonel Talbot Rd, London
Since Tue, Apr 7, 7:00 a.m. EDT
Daily Construction on HWY 401 Eastbound between Highway 4 / Colonel Talbot Rd and Highway 4 / Colonel Talbot Rd, London. 1 Alternating Lane(s).
511 Ontario · ON · updated June 5, 2026
Ramp closurewestbound
Construction, on-ramp at Highbury Ave, London
Since Thu, Jul 16, 12:00 a.m. EDT
Daily Construction on HWY 401 Westbound On-ramp at Highbury Ave, London. ALL LANES CLOSED.
511 Ontario · ON · updated July 11, 2026
Ramp closurewestbound
Construction, on-ramp at Highbury Ave, London
Since Wed, Jul 15, 12:00 a.m. EDT
Daily Construction on HWY 401 Westbound On-ramp at Highbury Ave, London. ALL LANES CLOSED.
511 Ontario · ON · updated July 11, 2026
Lane closurewestbound
Construction between Mill Street / Sweaburg Road / Oxford Rd 12 (230KM), Woodstock and Provincial Road, Windsor
Since Tue, Oct 6, 7:00 a.m. EDT
Daily Construction on HWY 401 Westbound between Mill Street / Sweaburg Road / Oxford Rd 12 (230KM), Woodstock and Provincial Road, Windsor. 1 Alternating Lane(s).
511 Ontario · ON · updated September 30, 2026
Lane closureeastbound
Construction between Norwich Ave / Oxford Road 59 and Dundas Street / Oxford Rd 2 (238KM), Woodstock
Since Wed, Sep 2, 8:00 p.m. EDT
Nightly Construction on HWY 401 Eastbound between Norwich Ave / Oxford Road 59 and Dundas Street / Oxford Rd 2 (238KM), Woodstock. 1 Alternating Lane(s).
511 Ontario · ON · updated August 25, 2026
Lane closurewestbound
Construction, on-ramp at Hwy 2/ Kingston Rd, Toronto
Since Wed, Sep 30, 12:00 a.m. EDT
Daily Construction on HWY 401 Westbound On-ramp at HWY 2/ KINGSTON RD, Toronto. 1 Right Lane(s).
511 Ontario · ON · updated September 25, 2026
Ramp closurewestbound
Construction, on-ramp at Port Union Road, Toronto
Since Fri, Sep 25, 12:00 a.m. EDT
Daily Construction on HWY 401 Westbound On-ramp at PORT UNION ROAD, Toronto. ALL LANES CLOSED.
511 Ontario · ON · updated September 25, 2026
Lane closurewestbound
Construction, express at Westney Road, Ajax
Since Wed, Sep 30, 7:00 p.m. EDT
Nightly Construction on HWY 401 Westbound Express between WESTNEY ROAD and WESTNEY ROAD, Ajax. 4 Alternating Lane(s).
511 Ontario · ON · updated September 28, 2026
Lane closureeastbound
Construction, express at Westney Road, Ajax
Since Wed, Sep 30, 8:00 p.m. EDT
Nightly Construction on HWY 401 Eastbound Express between WESTNEY ROAD and WESTNEY ROAD, Ajax. 4 Alternating Lane(s).
511 Ontario · ON · updated September 28, 2026
Lane closureeastbound
Engineering Investigation between Wesleyville Rd (IC 456) and Cr 2 (IC 461) / Toronto Rd, Port Hope
Since Mon, Sep 28, 7:30 a.m. EDT
Daily Engineering Investigation on HWY 401 Eastbound between WESLEYVILLE RD (IC 456) and CR 2 (IC 461) / Toronto Rd, Port Hope. 1 Alternating Lane(s).
511 Ontario · ON · updated September 17, 2026
Lane closurewestbound
Construction between Edward St (IC 716)/Leeds & Grenville Cr 18, Prescott and Maitland Rd (IC 705)/Leeds & Grenville Cr…
Since Mon, Oct 5, 9:00 p.m. EDT
Nightly Construction on HWY 401 Westbound between EDWARD ST (IC 716)/Leeds & Grenville CR 18, Prescott and MAITLAND RD (IC 705)/Leeds & Grenville CR 15, Maitland. 1 Right Lane(s).
511 Ontario · ON · updated October 1, 2026
Lane closureeastbound
Construction at Dickinson Rd (IC 770)/Cr 14, Ingleside
Since Mon, Aug 31, 6:00 a.m. EDT
Nightly Construction on HWY 401 Eastbound between DICKINSON RD (IC 770)/CR 14 and DICKINSON RD (IC 770)/CR 14, Ingleside. 1 Right Lane(s).
511 Ontario · ON · updated August 14, 2026
Lane closurewestbound
Construction at Dickinson Rd (IC 770)/Cr 14, Ingleside
Since Mon, Aug 31, 6:00 a.m. EDT
Nightly Construction on HWY 401 Westbound between DICKINSON RD (IC 770)/CR 14 and DICKINSON RD (IC 770)/CR 14, Ingleside. 1 Right Lane(s).
511 Ontario · ON · updated August 14, 2026

Planned construction 47

Traffic cameras 312

All 312 cameras →

Highway 401 near Concession Road 10 — Looking East
511 Ontario, Ministry of Transportation of Ontario
Highway 401 near Concession Road 10 — Looking Down
511 Ontario, Ministry of Transportation of Ontario
Highway 401 near Concession Road 10 — Looking West
511 Ontario, Ministry of Transportation of Ontario
Highway 401 at Tilbury ONRoute — Looking East
511 Ontario, Ministry of Transportation of Ontario

Collisions, winter road conditions and closures on Highway 401 at 6:00 a.m. Eastern. Free, and one click to stop.

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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)

All of Ontario →

Collisions and incidents now 0

Lane closures and construction 24

Construction at Gracey Side Road, Windsor

Construction at Gracey Side Road, Windsor

Construction, on-ramp at Highway 4 / Colonel Talbot Rd, London

Construction, off-ramp at Highway 4 / Colonel Talbot Rd, London

Construction, on-ramp at Highway 4 / Colonel Talbot Rd, London

Construction, off-ramp at Highway 4 / Colonel Talbot Rd, London

Construction, on-ramp at Highway 4 / Colonel Talbot Rd, London

Construction, on-ramp at Highway 4 / Colonel Talbot Rd, London

Construction at Highway 4 / Colonel Talbot Rd, London

Construction at Highway 4 / Colonel Talbot Rd, London

Construction at Highway 4 / Colonel Talbot Rd, London

Construction at Highway 4 / Colonel Talbot Rd, London

Construction, on-ramp at Highbury Ave, London

Construction, on-ramp at Highbury Ave, London

Construction between Mill Street / Sweaburg Road / Oxford Rd 12 (230KM), Woodstock and Provincial Road, Windsor

Construction between Norwich Ave / Oxford Road 59 and Dundas Street / Oxford Rd 2 (238KM), Woodstock

Construction, on-ramp at Hwy 2/ Kingston Rd, Toronto

Construction, on-ramp at Port Union Road, Toronto

Construction, express at Westney Road, Ajax

Construction, express at Westney Road, Ajax

Engineering Investigation between Wesleyville Rd (IC 456) and Cr 2 (IC 461) / Toronto Rd, Port Hope

Construction between Edward St (IC 716)/Leeds & Grenville Cr 18, Prescott and Maitland Rd (IC 705)/Leeds & Grenville Cr…

Construction at Dickinson Rd (IC 770)/Cr 14, Ingleside

Construction at Dickinson Rd (IC 770)/Cr 14, Ingleside

Planned construction 47

Construction between North Talbot Rd and Pulford Tunnel, Windsor

Construction between Stewart Blvd (IC 696)/Leeds & Grenville Cr 29 (Brockville) and North Augusta Rd (IC 698)…

Construction, collector between Leslie Street and Don Mills Road, Toronto

Construction between Townline Road / Wellington Rd 33 (286KM), Cambridge and Highway 6 South / Brock Road / Wellington…

Construction at Sd&g Rd 31 (IC 750) - Morrisburg, Morrisburg

Construction at Sd&g Rd 31 (IC 750) - Morrisburg, Morrisburg

Construction between Manning Road / Essex Rd 19 and Highway 77 / Comber Side Road, Windsor

Construction between Mill Street / Sweaburg Road / Oxford Rd 12 (230KM), Woodstock and Foldens Line / Oxford Rd 6/Embro…

Construction between Hwy 35/115 and Liberty St, Clarington

Maintenance between Joyceville Rd (IC 632)/Frontenac Cr 16, Gananoque and Westbrook Rd, Odessa

Construction, express at Brock Road, Pickering

Construction between Harmony Road and Ritson Road, Oshawa

Construction, express between Second Line Road and Hwy 403, Mississauga

Construction, on-ramp at Brock Road, Pickering

Construction between Ritson Road and Harmony Road, Oshawa

Construction, express between Renforth Dr, Toronto and Winston Churchill Blvd, Mississauga

Construction, collector between Second Line Road and Hwy 403, Mississauga

Construction, express between Bayview Ave and Leslie Street, Toronto

Construction, collector between Yonge St and Don Mills Road, Toronto

Maintenance between Guelph Line and Regional Road 25, Milton

Construction, collector between Warden Ave and Neilson Road, Toronto

Construction, collector between Rouge River and Port Union Road, Toronto

Construction, express between Warden Ave and Neilson Road, Toronto

Maintenance, collector at Bayview Ave, Toronto

Maintenance, express between Warden Ave and Hwy 404, Toronto

Construction, collector between Dixie Road and Winston Churchill Blvd, Mississauga

Construction, collector between Whites Road and Brock Road, Pickering

Construction at Carman Rd (IC 738)/Sd&g Cr 1 - Iroquois, Iroquois

Construction at Carman Rd (IC 738)/Sd&g Cr 1 - Iroquois, Iroquois

Construction at Carman Rd (IC 738)/Sd&g Cr 1 - Iroquois, Iroquois

Construction between Concession Rd 11 and Manning Road / Essex Rd 19, Windsor

Construction, express between Whites Road and Brock Road, Pickering

Construction, off-ramp at Brock St, Whitby

Maintenance, collector between Keele St and Jane St, Toronto

Construction, transfer at Avenue Road, Toronto

Maintenance, collector at Hwy 404, Toronto

Maintenance, collector between Keele St and Jane St, Toronto

Construction, express at Hwy 404, Toronto

Construction between Ritson Road and Harmony Road, Oshawa

Construction between Harmony Road and Ritson Road, Oshawa

Construction between Hwy 35/115 and Liberty St, Clarington

Construction, off-ramp at Westchester Bourne / Middlesex Rd 74, London

Engineering Investigation between Dillon Rd and Dillon Rd , Chatham

Engineering Investigation at Drake Rd, Chatham

Construction, express between Liverpool Road and Brock Road, Pickering

Maintenance between Westney Road, Ajax and Brock Road, Pickering

Maintenance, collector between Liverpool Road and Brock Road, Pickering

Traffic cameras 312

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