|Halton Regional Road 27|
Burnhamthorpe Rd. within Mississauga
|Maintained by City of Toronto
City of Mississauga
Region of Halton
Town of Oakville
|West end:||Tremaine Road (Continues west as No. 1 Side Road)|
| Bronte Road
Winston Churchill Boulevard
Erin Mills Parkway
|East end:||Dundas Street|
Burnhamthorpe Road is a major arterial road in the cities of Toronto and Mississauga, Ontario; beginning at Dundas Street (from which it initially angles away from before running parallel with), near Islington Avenue, running west and becoming a rural road in the Town of Oakville, where it terminates (after breaking) at Tremaine Road, where it changes name.
Unlike most major streets originating in Toronto and continuing into the "905" suburbs, only a short portion is located in Toronto and the street is primarily centred on Mississauga. Also, although Burnhamthorpe is commonly seen as the latter city's main east-west street, the parallel arteries of Dundas Street and Eglinton Avenue are (with the notable exception of the Mississauga City Centre area) busier and have heavier commercial uses along them overall.
The north side of the right-of-way on the street's eastern half through Mississauga is unusually wide as the result of being reserved for a potential light rail transit line that was never built. The reserve was converted into a bicycle trail, with another transit facility (the Mississauga Transitway) being constructed farther north instead.
In Mississauga, the street, unlike most other arterial roads in the regional municipalities surrounding Toronto proper, is not a regional road. However, in Oakville it is signed as Halton Regional Road 27 as far west as Neyagawa Boulevard.
Burnhamthorpe begins at Dundas Street in the Islington neighborhood in Toronto's west end and heads west, crossing and interchanging with, Highway 427. After crossing the Etobicoke Creek, it enters Mississauga and is designated Burnhamthorpe Road East. At Hurontario Street, it passes by the iconic Absolute World condominium towers, enters Mississauga City Centre, and changes to a West designation. A linear park, lined with residential towers, runs along the south side of the street through here. Landmarks located in the City Centre on or near Burnhamthorpe include Square One Shopping Centre; the Living Arts Centre; and Mississauga Celebration Square; with the Mississauga Civic Centre situated just to the north. Continuing west past the city centre area, it traverses a mixed commercial and residential zone, before crossing over the wide Credit River valley on a high-level bridge, and entering the leafy Erin Mills district. Just west of Winston Churchill Boulevard, it narrows to two lanes, crosses over (but has no interchange with) Highway 403, enters rural northern Oakville, and after approximately another 8 kilometres (5 miles), breaks at Highway 407-ETR and the Sixteen Mile Creek. It resumes briefly west of the creek, and terminates at Tremaine Road. Its course is continued west by the Number 1 Side Road.
Bus routing controversy
Burnhamthorpe Road was a relatively minor artery through Toronto's west end until traffic increased due to the growth of Mississauga. Much of this new traffic consisted of a growing number of MiWay (then known as Mississauga Transit) city buses travelling to and from the Toronto Transit Commission's Islington subway station. By the late 1990s, the number of buses had gotten so high that residents with homes on the street began complaining, and demanded that the MiWay buses use Highway 427 and Dundas St. to access Islington station. They even occasionally blockaded buses in what became known as the Battle of the Buses. The councils of both cities got involved and the TTC eventually banned MiWay buses from using the bus bays at the subway station. But by 2001, the ruckus died down and MiWay's buses began fully using the station again.
- "The Mississauga Transitway: A History Of The Many Studies". Transit Toronto.
- "Burnhamthorpe Trail".
- "A Brief History of Public Transit in Mississauga: Growing Pains". Transit Toronto.
- "Ultimatum issued in Battle of the Buses: Accept compromise or more traffic, McCallion warns (Reposted from the Toronto Star)". Transit Toronto.