Autoroute 20 is a
Quebec
Quebec ( ; )According to the Government of Canada, Canadian government, ''Québec'' (with the acute accent) is the official name in Canadian French and ''Quebec'' (without the accent) is the province's official name in Canadian English is ...
Autoroute, following the
Saint Lawrence River
The St. Lawrence River (french: Fleuve Saint-Laurent, ) is a large river in the middle latitudes of North America. Its headwaters begin flowing from Lake Ontario in a (roughly) northeasterly direction, into the Gulf of St. Lawrence, connecting ...
through one of the more densely populated parts of
Canada
Canada is a country in North America. Its ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, covering over , making it the world's second-largest country by tota ...
, with its central section forming the main route of the
Trans-Canada Highway
The Trans-Canada Highway (French: ; abbreviated as the TCH or T-Can) is a transcontinental federal–provincial highway system that travels through all ten provinces of Canada, from the Pacific Ocean on the west coast to the Atlantic Ocean on ...
from the
A-25 interchange to the
A-85 interchange. At , it is the longest Autoroute in Quebec. It is one of two main links between
Montreal
Montreal ( ; officially Montréal, ) is the second-most populous city in Canada and most populous city in the Canadian province of Quebec. Founded in 1642 as '' Ville-Marie'', or "City of Mary", it is named after Mount Royal, the triple- ...
and
Quebec City
Quebec City ( or ; french: Ville de Québec), officially Québec (), is the capital city of the Provinces and territories of Canada, Canadian province of Quebec. As of July 2021, the city had a population of 549,459, and the Communauté métrop ...
; the other is the
A-40.
There are two sections of the A-20, separated by a gap. The mainline extends for from the
Ontario
Ontario ( ; ) is one of the thirteen provinces and territories of Canada.Ontario is located in the geographic eastern half of Canada, but it has historically and politically been considered to be part of Central Canada. Located in Central C ...
border to its current terminus at
Trois-Pistoles. The second, more northerly section is far shorter (). Constructed as a
super two autoroute (one lane in each direction), this section of the A-20 bypasses
Rimouski
Rimouski ( ) is a city in Quebec, Canada. Rimouski is located in the Bas-Saint-Laurent region, at the mouth of the Rimouski River. It has a population of 48,935 (as of 2021). Rimouski is the site of Université du Québec à Rimouski (UQAR), t ...
to the south and ends at a roundabout junction with
Highway 132 in
Mont-Joli
Mont-Joli () is a city in the La Mitis Regional County Municipality within the Bas-Saint-Laurent region of Quebec, Canada. It is the county seat. The city is located east of Rimouski near the south shore of the Saint Lawrence River.
History ...
. While the Quebec government has completed environmental and economic reviews of the impact of linking the two sections of Autoroute 20,
it has not committed the funds necessary for construction. Citing the high number of accidents on the Rimouski-Mont-Joli link of the A-20, many politicians in the
Bas-Saint-Laurent region have criticized the government's lack of progress in linking the two sections of autoroute and twinning the two-lane portion.
Description
Autoroute du Souvenir
Montérégie
A-20 begins at the
Ontario
Ontario ( ; ) is one of the thirteen provinces and territories of Canada.Ontario is located in the geographic eastern half of Canada, but it has historically and politically been considered to be part of Central Canada. Located in Central C ...
-Quebec border near
Rivière-Beaudette as the continuation of
Ontario Highway 401
King's Highway 401, commonly referred to as Highway 401 and also known by its official name as the Macdonald–Cartier Freeway or colloquially referred to as the four-oh-one,
is a Controlled-access highway, controlled-access 400-series high ...
. The westernmost section of A-20 was named the Autoroute du Souvenir (''Remembrance Highway'') in 2007 to honour Canadian
veterans
A veteran () is a person who has significant experience (and is usually adept and esteemed) and expertise in a particular occupation or field. A military veteran is a person who is no longer serving in a military.
A military veteran that h ...
. Road marker signs on this stretch of the autoroute feature a
poppy
A poppy is a flowering plant in the subfamily Papaveroideae of the family Papaveraceae. Poppies are herbaceous plants, often grown for their colourful flowers. One species of poppy, ''Papaver somniferum'', is the source of the narcotic drug o ...
(a traditional
symbol of Remembrance in Canada).
At km 29, A-20 crosses
A-30 (former
A-540) before becoming an urban boulevard for approximately eight kilometres (km 30 to 38) in
Vaudreuil-Dorion
Vaudreuil-Dorion () is a suburb of Greater Montreal, in the Montérégie region of southwestern Quebec, Canada. The result of the merger of two towns, Vaudreuil and Dorion, it is located in the Vaudreuil-Soulanges Regional County Municipalit ...
and
L'Île-Perrot. This stretch of highway takes A-20 across the
Ottawa River
The Ottawa River (french: Rivière des Outaouais, Algonquin: ''Kichi-Sìbì/Kitchissippi'') is a river in the Canadian provinces of Ontario and Quebec. It is named after the Algonquin word 'to trade', as it was the major trade route of Eastern ...
. The speed limit is 50 km/h (30 mph) in Vaudreuil-Dorion and 70 km/h (45 mph) in L'Île-Perrot. A-20 once again becomes a limited-access highway at km 38, just before crossing the
Sainte-Anne-de-Bellevue Canal onto the
Island of Montreal
The Island of Montreal (french: Île de Montréal) is a large island in southwestern Quebec, Canada, that is the site of a number of municipalities including most of the city of Montreal and is the most populous island in Canada. It is the main ...
.
Montreal region
A-20 then traverses the
West Island
The West Island () is the unofficial name given to the cities, towns and boroughs at the western end of the Island of Montreal, in Quebec, Canada. It is generally considered to consist of the Lakeshore municipalities of Dorval, Pointe-Cl ...
(in
French
French (french: français(e), link=no) may refer to:
* Something of, from, or related to France
** French language, which originated in France, and its various dialects and accents
** French people, a nation and ethnic group identified with Franc ...
, ''l'Ouest de l'Île'') along the north shore of
Lac Saint-Louis to an interchange with
A-520. Commonly called the Dorval Interchange, this exit is the main access to
Montreal's Trudeau International Airport. Further east, A-20 crosses
the A-13 at its southern terminus, and then, at the St. Pierre Interchange,
Route 138 west towards the
Mercier Bridge
Mercier is French for ''notions dealer'' or ''haberdasher'', and may refer to:
People
* Agnès Mercier, French curler and coach
*Annick Mercier (born 1964), French curler
*Amanda H. Mercier (born 1975), American Judge
* Armand Mercier, (1933–20 ...
.
Just west of downtown
Montreal
Montreal ( ; officially Montréal, ) is the second-most populous city in Canada and most populous city in the Canadian province of Quebec. Founded in 1642 as '' Ville-Marie'', or "City of Mary", it is named after Mount Royal, the triple- ...
, A-20,
A-15 A15 or A-15 may refer to:
* A15 phases, a crystallographic structure type of certain intermetallic compounds
* A15 road, in several countries
* Antonov A-15, a Soviet glider
* British NVC community A15 (Elodea canadensis community), a British Isle ...
, and
Route 136 meet at the
Turcot Interchange
The Turcot Interchange is a three-level four-way freeway interchange within the city of Montreal, Quebec, Canada. Located southwest of downtown, the interchange links Autoroutes 15 (Décarie and Décarie South Expressways) and 20 (Remembrance Hi ...
. In 2020, the completion of a major project involving the rebuilding of the Turcot Interchange has shifted the autoroute north between Route 138 and the interchange. From there, A-20 east is
multiplexed
In telecommunications and computer networking, multiplexing (sometimes contracted to muxing) is a method by which multiple analog or digital signals are combined into one signal over a shared medium. The aim is to share a scarce resource - a ...
with A-15 south on the approach to the
Samuel-de-Champlain Bridge.
Longueuil
Multiplexed with
A-10
The Fairchild Republic A-10 Thunderbolt II is a single-seat, twin-turbofan, straight-wing, subsonic attack aircraft developed by Fairchild Republic for the United States Air Force (USAF). In service since 1976, it is named for the Republic ...
and A-15, all three autoroutes cross the
Saint Lawrence River
The St. Lawrence River (french: Fleuve Saint-Laurent, ) is a large river in the middle latitudes of North America. Its headwaters begin flowing from Lake Ontario in a (roughly) northeasterly direction, into the Gulf of St. Lawrence, connecting ...
via the
Samuel-de-Champlain Bridge to
Longueuil
Longueuil () is a city in the province of Quebec, Canada. It is the seat of the Montérégie administrative region and the central city of the urban agglomeration of Longueuil. It sits on the south shore of the Saint Lawrence River directly a ...
. The multiplex splits south of the bridge. The A-20 parallels the south shore of the river through suburban Longueuil. The junction with
A-25 affords a direct connection to the
Louis Hippolyte Lafontaine Bridge-Tunnel and Montreal's East End. The
Trans-Canada Highway
The Trans-Canada Highway (French: ; abbreviated as the TCH or T-Can) is a transcontinental federal–provincial highway system that travels through all ten provinces of Canada, from the Pacific Ocean on the west coast to the Atlantic Ocean on ...
joins A-20 at this junction.
Autoroute Jean-Lesage
The longest section of A-20 (from its junction with A-25 to its easternmost terminus) is named after
Jean Lesage, who served as
Premier of Quebec from 1960 to 1966, during the
Quiet Revolution. Autoroute Jean-Lesage currently exists as two discontinuous sections separated by about 55 kilometres:
* The main section between the Louis-Hippolyte-Lafontaine Bridge-Tunnel and Trois-Pistoles in the
Bas-Saint-Laurent region.
* A shorter section that serves as a bypass of
Rimouski
Rimouski ( ) is a city in Quebec, Canada. Rimouski is located in the Bas-Saint-Laurent region, at the mouth of the Rimouski River. It has a population of 48,935 (as of 2021). Rimouski is the site of Université du Québec à Rimouski (UQAR), t ...
and extends east to a final terminus at
Route 132 in
Mont-Joli
Mont-Joli () is a city in the La Mitis Regional County Municipality within the Bas-Saint-Laurent region of Quebec, Canada. It is the county seat. The city is located east of Rimouski near the south shore of the Saint Lawrence River.
History ...
.
Main section
=Centre-du-Québec
=
From the junction with A-25, A-20 travels east, away from the St. Lawrence River. At kilometre 98, A-20 intersects A-30 near
Boucherville, crossing the
Richelieu River
The Richelieu River () is a river of Quebec, Canada, and a major right-bank tributary of the St. Lawrence River. It rises at Lake Champlain, from which it flows northward through Quebec and empties into the St. Lawrence. It was formerly kn ...
(km 112) just north of
Mont-Saint-Hilaire. Bypassing
Saint-Hyacinthe, A-20 forms a multiplex with
Route 116 for six kilometres between exits 141 and 147. This section of A-20 in Centre-du-Québec is located the furthest from the St. Lawrence River (approximately 45 kilometres). Between
Drummondville and
Sainte-Eulalie, A-20 forms a multiplex with
A-55 for 37 kilometres.
=Quebec City region
=
A-20 continues across the
Great Lakes–St. Lawrence Lowlands and Quebec's agricultural heartland. The autoroute once again parallels the river as it approaches
metropolitan Quebec City. From this point eastward, A-20 is never more than five kilometres from the river. At km 312, A-20 crosses
the A-73, a north–south link between
Saint-Georges and
Quebec City
Quebec City ( or ; french: Ville de Québec), officially Québec (), is the capital city of the Provinces and territories of Canada, Canadian province of Quebec. As of July 2021, the city had a population of 549,459, and the Communauté métrop ...
via the
Pierre Laporte Bridge. While the
control city on A-20 is listed as "Québec", the autoroute never enters the city proper. Before departing the region, the freeway bypasses suburban
Lévis.
=Chaudière-Appalaches and Bas-Saint-Laurent
=

As it continues eastward, A-20 passes the regional centres of
Montmagny and
La Pocatière before approaching
Rivière-du-Loup
Rivière-du-Loup (; 2021 population 20,118) is a small city on the south shore of the Saint Lawrence River in Quebec. The city is the seat for the Rivière-du-Loup Regional County Municipality and the judicial district of Kamouraska. Its one ...
and the junction with
A-85 at km 499. The
Trans-Canada Highway
The Trans-Canada Highway (French: ; abbreviated as the TCH or T-Can) is a transcontinental federal–provincial highway system that travels through all ten provinces of Canada, from the Pacific Ocean on the west coast to the Atlantic Ocean on ...
departs A-20 at this interchange and travels southeast on A-85 toward
Edmundston
Edmundston is a city in Madawaska County, New Brunswick, Canada.
On 1 January 2023, Edmundston will expanded, annexing the village of Rivière-Verte and parts of the local service districts of the parish of Saint-Jacques and the parish of Sa ...
,
New Brunswick
New Brunswick (french: Nouveau-Brunswick, , locally ) is one of the thirteen Provinces and territories of Canada, provinces and territories of Canada. It is one of the three Maritime Canada, Maritime provinces and one of the four Atlantic Canad ...
and the
Maritime Provinces
The Maritimes, also called the Maritime provinces, is a region of Eastern Canada consisting of three provinces: New Brunswick, Nova Scotia, and Prince Edward Island. The Maritimes had a population of 1,899,324 in 2021, which makes up 5.1% of Ca ...
. At km 518, the highway becomes a
super two for the remainder of its main section. The eastern end of the main section of the A-20 is located in
Trois-Pistoles, approximately 40 kilometres east of Rivière-du-Loup.
Rimouski section
The second section of Autoroute Jean-Lesage (km 597 to km 641) connects
Rimouski
Rimouski ( ) is a city in Quebec, Canada. Rimouski is located in the Bas-Saint-Laurent region, at the mouth of the Rimouski River. It has a population of 48,935 (as of 2021). Rimouski is the site of Université du Québec à Rimouski (UQAR), t ...
to
Mont-Joli
Mont-Joli () is a city in the La Mitis Regional County Municipality within the Bas-Saint-Laurent region of Quebec, Canada. It is the county seat. The city is located east of Rimouski near the south shore of the Saint Lawrence River.
History ...
. It begins at a junction with Route 132 in
Rimouski
Rimouski ( ) is a city in Quebec, Canada. Rimouski is located in the Bas-Saint-Laurent region, at the mouth of the Rimouski River. It has a population of 48,935 (as of 2021). Rimouski is the site of Université du Québec à Rimouski (UQAR), t ...
, approximately 55 km from the current terminus of A-20's main section. Like its larger counterpart, the Rimouski section of A-20 parallels the St. Lawrence, providing a southern bypass of Rimouski before ending (at another junction with Route 132) at the western approach to Mont-Joli.
This section of the A-20 is currently a
single carriageway
A single carriageway (British English) or Undivided highway (American English) is a road with one, two or more lanes arranged within a one carriageway with no central reservation to separate opposing flows of traffic. A single-track road has a ...
with occasional
passing lanes. It was built to accommodate an eventual expansion to four lanes and most overpasses include the clearance needed to accommodate the additional lanes. The high accident rate along this section of A-20 have prompted many politicians to call for the highway to be expanded to two lanes in each direction.
An electric fence has been installed on both sides of the highway between km 621 and 628 to prevent
moose
The moose (in North America) or elk (in Eurasia) (''Alces alces'') is a member of the New World deer subfamily and is the only species in the genus ''Alces''. It is the largest and heaviest extant species in the deer family. Most adult ma ...
from crossing the road, while at km 624
an underpass has been constructed to allow wildlife to pass under the highway safely.
Future
Transports Québec
Le ministère des Transports du Québec ( en, Ministry of Transportation of Quebec), known by its short form name Transports Québec, is a Quebec government ministry responsible for transport, infrastructure and law in Quebec, Canada.
Since 2 ...
(MTQ) is currently engaged in several projects designed to connect the two segments of A-20.
Long-range plans by the MTQ call for the two sections of A-20 to meet. A 9.8 km section of single carriageway was opened to traffic on December 3, 2011 between
Cacouna
Cacouna () is a municipality in the Rivière-du-Loup Regional County Municipality within the Bas-Saint-Laurent region of Quebec. It is located on the south shore of the Saint Lawrence River along Route 132.
The municipality of Cacouna was creat ...
and
L'Isle-Verte. As part of this project, a few kilometres of the highway near Cacouna was moved 1.5 km to the south and the old roadbed was destroyed. The MTQ timeline for completing the highway to Trois-Pistoles was met; it opened to traffic in November 2015. Overpasses were constructed for the St-Paul, St-Éloi and Drapeau roads.
Regarding the section from
Trois-Pistoles to
Rimouski
Rimouski ( ) is a city in Quebec, Canada. Rimouski is located in the Bas-Saint-Laurent region, at the mouth of the Rimouski River. It has a population of 48,935 (as of 2021). Rimouski is the site of Université du Québec à Rimouski (UQAR), t ...
, the Quebec government has completed environmental and economic reviews of the impact of linking the two sections of Autoroute 20,
but it has not committed the funds necessary for construction. Frustrated by the long delay in linking the two sections of A-20, in 2013, the Mayor of Rimouski proposed paying for the construction by tolling the autoroute.
Citing predictions for an increase in ferry traffic to and from the
Côte-Nord
Côte-Nord (, ; ; land area ) is the second-largest administrative region by land area in Quebec, Canada, after Nord-du-Québec. It covers much of the northern shore of the Saint Lawrence River estuary and the Gulf of Saint Lawrence past Tadous ...
as a result of the Government of Quebec's
Plan Nord Plan Nord (meaning 'Plan North' in English) is an economic development strategy launched by the government of Quebec in May 2011 to develop the natural resources extraction sector in the part of Quebec to the north of the 49th parallel. The plan, to ...
, in 2011 the Mayor of
Matane
Matane is a town on the Gaspé Peninsula in Quebec, Canada, on the south shore of the Saint Lawrence River at the mouth of the Matane River. The town is the seat for the La Matanie Regional County Municipality.
In addition to Matane itself, ...
called for the further extension of A-20 to his city.
Popular culture
Autoroute 20 serves as the backdrop to the popular 2002 Quebec film ''Québec-Montréal'' by
Ricardo Trogi about seven twenty-something travellers driving between the two cities.
The
Quebec French
Quebec French (french: français québécois ), also known as Québécois French, is the predominant variety of the French language spoken in Canada. It is the dominant language of the province of Quebec, used in everyday communication, in educ ...
expression "à l'autre bout de la 20" (in
English, ''at the other end of the 20'') refers to Montreal when the speaker is in Quebec City, and to Quebec City when one is in Montreal.
Other names
Older
Anglophone
Speakers of English are also known as Anglophones, and the countries where English is natively spoken by the majority of the population are termed the '' Anglosphere''. Over two billion people speak English , making English the largest langua ...
Montrealers sometimes still refer to the section of the A-20 west of the city as Highway 2-20 (or "The Two and Twenty"), but the
Route 2
The following highways are numbered 2. For roads numbered A2, see list of A2 roads. For roads numbered B2, see list of B2 roads. For roads numbered M2, see list of M2 roads. For roads numbered N2, see list of N2 roads.
International
* AH2, As ...
designation was dropped in the mid 1970s.
Exit list
Rest stops

There are 15
rest stops located at the following points along Autoroute 20, and contain the following services:
Gallery
A-20 eeastbound
File:14th-ave-east.jpg, 14th Ave, Montréal
File:20-138-merge-east.jpg, Merge with 138, Montréal
File:Turcot-yards-east.jpg, Turcot yards
File:Autoroute20E km311.jpg, Autoroute 20 eastbound, km 311 near Pierre-Laporte Bridges in Lévis, Québec
A-20 westbound
File:A20Ouest km59.jpg, Autoroute 20 west, ~km59 on Montreal Island
File:A20Ouest km5.jpg, Autoroute 20 east, near Rivière Beaudette, ~km 5
File:Quebec Autoroute 30 - Autoroute 20 WB (1).jpg, A-30 at A-20 westbound
File:A20Ouest km29.jpg, Autoroute 20 west, exit 29.
See also
*
List of bridges in Montreal
*
List of crossings of the Ottawa River
*
List of crossings of the Saint Lawrence River
Notes
References
External links
A-20 at Exitlists.com
Transports Quebec Map
Veteran from Gaspé behind idea to rename Quebec highway to remember war dead
{{Authority control
20
Quebec 020
1964 establishments in Quebec