The Highway 401 cameras from the Gordie Howe bridge to Curry Hill

At 21:12 on 2026-10-17 the camera at the west end of Highway 401 in Windsor had three cars climbing the ramp on the left of frame, six empty lanes running away to the right, and across the river the two lit towers of the Gordie Howe International Bridge. The frame is 1,920 by 1,080, stamped 17.Oct 2026 21:12:03 in one corner and 101 - 401 E of Ojibway / EC Row along the bottom, which is the province's own camera numbering rather than ours. The bridge opened on 2026-07-27 and the authority that built it describes a cable-stayed design with no piers in the water, so after dark it reads as two lit hooks over the Detroit skyline. I think it is the best thing on the road.

The 401 runs from the Detroit River to the Quebec line and the Ministry of Transportation watches most of it. Counting live cameras on 2026-10-18 by matching highway 401 against our Ontario rows gives 198: 184 carry a Highway 401 name and the other 14 are named for the 400, 403, 404, 410, 412, 418 and 427 where those roads meet it. All of them come from Ontario 511, all of them are stills rather than video, and all 198 sit on the Ontario page. The westernmost and easternmost are 769.9 km apart in a straight line, by haversine from the coordinates their two camera pages publish.

Windsor, the tunnels and the run to Tilbury

The Windsor end is the strangest part of the corridor, because the 401 there goes underground. Four of the cameras are inside tunnels: Spring Garden, Oakwood at Cabana Road, Villa Borghese and Hearthwood. They are 704 by 480 and they are lit sodium-orange around the clock, so the tunnel cameras look the same at four in the morning as at noon: concrete columns, a cone someone left behind, and nothing moving. The Spring Garden frame I pulled at 01:12 UTC was stamped 2026-10-17 06:54:04 PM, over two hours behind the others, so these four lag.

Out of the tunnels the Highway 3 roundabout camera watches something you do not expect on a 400-series road, a two-lane roundabout with 30 km/h signs on the approach, floodlit and empty at 21:10. Then the long rural stretch east. Tilbury ONRoute is the slowest camera I measured anywhere on the road: polled every 15 seconds for five and a half minutes, its stamp moved once, from 20:54:19 to 21:12:19, an 18 minute step.

The two-minute cameras

Most of the corridor moves faster than that, and it moves on a clock. Between 01:16 and 01:22 UTC I polled seven cameras every 15 seconds and kept the distinct timestamps burnt into each frame. Wellington Road South in London went 21:14:38, 21:16:38, 21:18:38, 21:20:38. The 401 at the 403 near Cambridge went 21:14:02, 21:16:02, 21:18:02, 21:20:01. Highway 412 at Whitby did the same with one frame missed. Two minutes, to the second, on an Axis Q6074 or a Q6052 depending on the site. The four eastern cameras in the same poll produced no new stamp at all in those five and a half minutes.

That matters if you are checking the road before you leave. A two-minute camera tells you whether the queue you can see is still there; an 18-minute one tells you what the road looked like before you put your coat on. We store a single refresh figure per source and for Ontario it says one minute, which the measurement above says is optimistic, so take the stamp in the corner of the frame over anything a page tells you.

Through the GTA

The 403 and 410 interchange is the one to open first in the GTA. At 21:09:45 the express lanes were dark and nearly empty on the left of frame, the collectors beside them were lit and moving, and a solid line of brake lights ran up the hill towards the split. It is the clearest picture of the collector-express system anyone publishes for free.

Eastwards, Yonge Street looks straight down the express and collector lanes side by side, headlights going one way and tail lights the other. That camera blinked while I was working: at 01:12 UTC it served a grey card reading No live camera feed at this time, and 90 seconds later it was back with a frame stamped 21:14:04. Worth knowing before you decide a camera is dead.

Two more in Toronto are worth a look for what they are rather than what is on them. The 404 tunnel ramp points down a curving concrete tube with the 401 visible as a smear of lights through the portal, and the 427 camera sits over the approach to the airport. Neither is scenic. Both tell you in one glance whether to take the detour.

Kingston to the Quebec line

East of Kingston the cameras get older and the views get better. Highway 401 and Highway 15 is 1,920 by 1,080 and at 21:12:44 it held a single car on the overpass with its brake lights on and a green sign for Cornwall at the edge of frame. Highway 137, the road down to the Thousand Islands bridge, is a different generation entirely: 704 by 480, monochrome after dark, an Ontario watermark bottom right and a stamp reading 0042 401/137 26-10-17 21:13:24 HOLD. Mallorytown ONroute is the same vintage and at 21:00 it held one set of headlights on an otherwise black road.

The last camera on the road is 4th Line Road, which labels itself ER-14 Curry Hill and shows a lit overpass, wet grass and an empty eastbound carriageway at 20:55:31. After that you are in Quebec and on somebody else's cameras. The longest unwatched stretch is behind you by then: 35.1 km between the second Highway 15 camera and Reynolds Road, computed by haversine from the coordinates on those two pages, with 27.9 km between Palace Road and Highway 38 close behind.

What we are doing with them

The stamp in the corner of the frame is the only honest refresh figure for a camera like these, and reading it is cheap: it sits in the EXIF datetime on the newer Axis units and is burnt into the image on the older ones. We want that number stored per camera rather than per source, and this road is the clearest argument for it I have found, because one highway carries both a 120 second camera at Cambridge and an 18 minute one at Tilbury under a single stored constant.

After that, the daylight pass: all 198 of these sampled at 08:00 and at 17:00 Eastern on a weekday, to sort the ones pointed at a queue from the ones pointed at a field. The open question is which of them anyone actually watches. No Ontario camera appears in our most-viewed list for 2026-10-16, where the top of the table is Makaha Ridge on Kauai and three gantry cameras near Annapolis, and I cannot tell from here whether 401 drivers go straight to 511on.ca instead or whether we have simply not made these easy enough to find.