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Autoroute 25 shieldTrans-Canada Highway shield

Autoroute 25
Autoroute Louis-H.-La Fontaine
Route information
Maintained by Transports Québec
Length 49.0 km (30.4 mi)
Existed 1967[1] – present
Major junctions
South end A-20 (TCH) in Longueuil
  A-40 (TCH) in Montréal
A-440 in Laval
A-640 in Terrebonne
North end Route 125 / Route 158 in Saint-Esprit
Major cities Boucherville, Montreal, Laval, Terrebonne, Mascouche
Highway system

Quebec provincial highways

A-20 A-30

Autoroute 25 (or A-25, also called Autoroute Louis-H.-La Fontaine in Montreal) is an Autoroute in the Lanaudière region of Quebec. It is currently 49 km (30.4 mi) long and services the direct north of Montreal's Metropolitan Area. The A-25 has one toll bridge, which is the first modern toll in MMA and one of two overall in Quebec (after being joined by the A-30 toll bridge, which opened in 2012).

A-25 begins at an interchange with Autoroute 20 and Route 132 in Longueuil and quickly enters the Louis Hippolyte Lafontaine Bridge-Tunnel into the east end of Montreal. It is the main north-south freeway in the east end of Montreal (actually northwest-southeast but perpendicular to the St. Lawrence River).

Before the Montreal-Laval Extension, a gap existed in A-25 north of the interchange with Autoroute 40. Instead it followed Boulevard Henri-Bourassa to Boulevard Pie-IX, both of which are principal urban arterial roads. Boulevard Pie-IX north of Boulevard Henri-Bourassa was used as a temporary section of Autoroute 25 across the Rivière-des-Prairies to Autoroute 440. From there, A-25 proceeded east with A-440, then continued north and east of Laval.

The designation of Autoroute Louis-H.-Lafontaine is named after Louis Hippolyte Lafontaine, a 19th-century Lower Canada leader of what was then the Province of Canada.

A-25 is also part of the Trans-Canada Highway between the A-20 and A-40 interchanges.


Autoroute 25 in Terrebonne

Construction history[edit]

Kilometre Year Notes
0 to 4 1967 Louis Hippolyte Lafontaine Bridge-Tunnel
4 to 7 1966 Avenue Souligny, Montreal to A-40/TCH, Montreal
7 to 10 2002 A-40/TCH, Montreal to Boulevard Henri-Bourassa, Montreal
10 to 17 2011 Boulevard Henri-Bourassa, Montreal to A-440, Laval
12 to 44 1971 From A-440, Laval to Chemin du Ruisseau Saint-Jean, Saint-Roch-Ouest
44 to 46 1999 Ruisseau Saint-Jean, Saint-Roch-Ouest to Rue Montcalm, Saint-Esprit
46 to end 2001 Rue Montcalm, Saint-Esprit to Route 125, Saint-Esprit

Montreal-Laval Extension[edit]

A-25 crosses the Rivière des Prairies by way of the Olivier-Charbonneau Bridge.

Autoroute 25 has been extended under a public-private partnership. The 7.2 km section of highway joins the southern part of Autoroute 25 at Boulevard Henri-Bourassa in Montreal's East end and the northern part at Laval's Autoroute 440. The $207-million project will save some $226 million for the province since a private consortium will assume any cost overruns. A toll bridge using a RFID transponder automatic payment system spans the Rivière des Prairies and costs transponder-owning motorists $3.20 per crossing at peak hours (6-9 AM and 3-6 PM) and $2.24 per crossing the rest of the day. An additional $5.34 in administration fees is charged for motorists without transponders. The road opened on May 21, 2011. The highway has six lanes (three in each direction), while the bridge features three lanes in each direction with one reserved for public transit.

Now that the link between Montreal and Laval is complete, the temporary autoroute section connecting Boulevard Pie-IX to Autoroute 440 lost its A-25 designation. The new route designation for this section is Route 125.

The new span effectively joins the North Shore, Laval, Montreal, and the South Shore. In addition, the completion of Autoroute 30 also created under a public-private partnership, will help reduce traffic in the City of Montreal by offering a southern by-pass route.

Environmental organizations have raised concerns that the highway extension will lead to an influx of automobiles entering Montreal and increase development pressure on agricultural land in Eastern Laval.[3][4]

Exit list[edit]

Region Location km mi Exit Destinations Notes
Continues as A-20 (TCH) east to A-30 – Québec, Sorel-Tracy, Aéroport Saint-Hubert
Montérégie Longueuil 0.00 0.00 A-20 west / Route 132 to A-15 – Varennes, La Prairie, Aéroport P.-E.-Trudeau, USA Trans-Canada Highway follows A-20 east
A-20 exit 90; Route 132 exit 89
Saint Lawrence River Pont Louis-Hippolyte-La Fontaine
1 Île Charron, Îles-de-Boucherville Park
Tunnel Louis-Hippolyte-La Fontaine
Montréal Montréal 4 Montréal Centre-Ville Access via Avenue Souligny
5 Rue Sherbrooke (Route 138) / Rue Hochelaga / Rue Notre-Dame Signed as exits 5E (east) and 5O (west) northbound
6 Rue Beaubien / Boulevard Yves-Prévost Northbound exit is via exit 5O
7 Boulevard Wilfrid-Pelletier / Boulevard Châteauneuf Northbound exit and southbound entrance
8 A-40 (TCH) – Trois-Rivières, Québec, Gatineau, Ottawa, Aéroport P.-E.-Trudeau, Aéroport Mirabel Trans-Canada Highway follows A-40 west
Signed as exits 8E (east) and 8O (west); A-40 exit 80
9 Rue Bombardier / Boulevard Henri-Bourassa No northbound signage for Boulevard Henri-Bourassa
10 Boulevard Perras / Boulevard Maurice-Duplessis / Boulevard Henri-Bourassa No southbound signage for Boulevard Henri-Bourassa
Rivière des Prairies Pont Olivier-Charbonneau (tolled)
Laval 14 Montée Masson (Route 125) / Avenue Marcel Villeneuve / Boulevard Lévesque No southbound signage for Route 125
16 A-440 west (Autoroute Laval) Eastern terminus of A-440; exit 35 on A-440
20 Boulevard des Mille Îles
Rivière des Mille Îles Pont Lepage
21 Île Saint-Jean
Pont Mathieu
Lanaudière Terrebonne 22 Route 344 (Boulevard des Seigneurs) – Terrebonne Centre-Ville Northbound exit and southbound entrance; signed as exits 22E (east) and 22O (west)
23 Route 337 (Boulevard Moody / Chemin Gascon) – Terrebonne Centre-Ville
24 Route 125 (Montée Masson) / Rue Grande-Allée Southbound exit shares a ramp with exit 25
25 A-640 to A-40 – Repentigny, Québec, Saint-Eustache, Mirabel Airport Exit 42 on A-640
Avenue de l'Esplanade Standalone interchange that shares ramp with exit 25
Mascouche 28 Chemin Sainte-Marie – Mascouche Centre-Ville
30 Chemin Saint-Pierre
34 Chemin Saint-Henri – L'Épiphanie
Saint-Roch-de-l'Achigan 38 Rue Armand-Majeau Northbound exit and entrance
41 Rang du Ruisseau-des-Anges South
Saint-Roch-Ouest 44 Route 339 (Route 125 south) – Saint-Roch-de-l'Achigan Southern terminus of unsigned concurrency with of Route 125
Saint-Esprit 46 Route 158 west – Saint-Lin-Laurentides, Saint-Jérôme
Route 125 north / Route 158 east – Rawdon, Saint-Esprit, Joliette Continuation north
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

See also[edit]


  1. ^ "Répertoire des autoroutes du Québec" (in French). Transports Québec. Archived from the original on 2010-01-11. Retrieved 2008-02-23. 
  2. ^ Transports Québec: "Répertoire des autoroutes du Québec", 2007. Archived 2010-01-11 at the Wayback Machine.
  4. ^ Conseil Régional de l'environnement de Montréal. "10 raisons d'être contre le prolongement de l'autoroute 25" (PDF). CREMTL. Retrieved 7 March 2011. 

External links[edit]

Route map: Google

KML is from Wikidata
Preceded by
Quebec Autoroute 40.svg Autoroute 40
Trans-Canada Highway
Quebec Autoroute 25.svg Autoroute 25
Succeeded by
Quebec Autoroute 20.svg Autoroute 20


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