Quebec Autoroute 25

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Autoroute 25

Route Transcanadienne
Autoroute Louis-H.-La Fontaine
Route information
Maintained by Transports Québec
Length49.3 km[1][2] (30.6 mi)
Major junctions
South end A-20 (TCH) in Longueuil
Major intersections A-40 (TCH) in Montréal
A-440 in Laval
A-640 in Terrebonne
North end R-125 / R-158 in Saint-Esprit
Major citiesLongueuil, Montréal, Laval, Terrebonne, Mascouche
Highway system
A-20 A-30

Autoroute 25 (or A-25, also called Autoroute Louis-H.-La Fontaine in Montréal) is an Autoroute in the Lanaudière region of Quebec. It is currently 49 km (30.4 mi) long and services the direct north of Montréal's Metropolitan Area. A-25 has one toll bridge, which is the first modern toll in the Montréal area 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 A-20 and Route 132 in Longueuil and quickly enters the Louis Hippolyte Lafontaine Bridge-Tunnel into the east end of Montréal. It is the main north-south freeway in the east end of Montréal (actually northwest-southeast but perpendicular to the St. Lawrence River).

Before the Montréal-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-Hippolyte-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

Kilometre Year Notes
0 to 4 1967 Louis Hippolyte Lafontaine Bridge-Tunnel
4 to 7 1966 Avenue Souligny, Montréal to A-40/TCH, Montréal
7 to 10 2002 A-40/TCH, Montréal to Boulevard Henri-Bourassa, Montréal
10 to 17 2011 Boulevard Henri-Bourassa, Montréal 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

Montréal-Laval extension

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 Montréal'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 Montréal 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, Montréal, and the South Shore.

Environmental organizations have raised concerns that the highway extension will lead to an influx of automobiles entering Montréal and increase development pressure on agricultural land in Eastern Laval.[4][5]

Exit list

A-20 (TCH) east to A-30 – Québec, Sorel-Tracy, Aéroport Saint-HubertA-25 southern terminus; roadway and Trans-Canada Highway continue as A-20 east
90 A-20 west / R-132 to A-15 – Varennes, La Prairie, Aéroport P.-E.-Trudeau, USAA-20 west exit 90; R-132 / A-20 east exit 89
Saint Lawrence River0.4–
Pont Louis-Hippolyte-La Fontaine
1.11.81Île Charron, Îles-de-Boucherville Park
Tunnel Louis-Hippolyte-La Fontaine
3Rue Notre-DameSouthbound exit
4Montréal Centre-VilleAccess via Avenue Souligny
Module:Jctint/CAN warning: Unused argument(s): mspan
5.48.75 Rue Sherbrooke (R-138) / Rue Hochelaga / Rue Notre-DameSigned as exits 5E (east) and 5O (west) northbound
Rue Beaubien / Boulevard Yves-PrévostNorthbound exit is via exit 5O
6.410.37Boulevard Wilfrid-Pelletier / Boulevard ChâteauneufNorthbound exit
7.111.46Rue Beaubien / Boulevard Yves-PrévostSouthbound exit
8 A-40 (TCH) – Trois-Rivières, Québec, Gatineau, Ottawa, Aéroport P.-E.-Trudeau, Aéroport MirabelTrans-Canada Highway follows A-40 west; signed as exits 8E (east) and 8O (west); A-40 exit 80
9.014.59Rue BombardierNorthbound exit
9.315.010Boulevard Henri-Bourassa / Boulevard Perras / Boulevard Maurice-DuplessisNorthbound exit
11.518.59Boulevard Henri-Bourassa / Rue BombardierSouthbound exit
12.920.810Boulevard Perras / Boulevard Maurice-DuplessisSouthbound exit
Rivière des Prairies12.9–
Pont Olivier-Charbonneau (tolled)
Laval14.323.014 Montée Masson (R-125) / Avenue Marcel Villeneuve / Boulevard LévesqueNo southbound signage for Route 125
16 A-440 west (Autoroute Jean-Noël-Lavoie)Eastern terminus of A-440; exit 35 on A-440
19.831.920Boulevard des Mille Îles
Rivière des Mille Îles20.1–
Pont Lepage
20.633.221Île Saint-Jean
Pont Mathieu
Les MoulinsTerrebonne21.534.622 R-344 (Boulevard des Seigneurs) – Terrebonne Centre-VilleNorthbound exit and southbound entrance; signed as exits 22E (east) and 22O (west)
22.335.923 R-337 (Boulevard Moody / Chemin Gascon) – Terrebonne Centre-Ville
24.439.324 R-125 (Montée Masson) / Rue Grande-AlléeSouthbound exit shares a ramp with exit 25
25.541.025 A-640 to A-40 – Repentigny, Québec, Saint-Eustache, Mirabel AirportA-640 exit 42
26.442.5Avenue de l'EsplanadeStandalone interchange that shares ramp with exit 25
Mascouche28.445.728Chemin Sainte-Marie – Mascouche Centre-Ville
29.848.030Chemin Saint-Pierre
34.355.234Chemin Saint-Henri – L'Épiphanie
MontcalmSaint-Roch-de-l'Achigan38.662.138Rue Armand-MajeauNorthbound exit and entrance
41.066.041Rang du Ruisseau-des-Anges S
Saint-Roch-Ouest44.371.344 R-339 / R-125 south – Saint-Roch-de-l'AchiganSouth end of R-125 unsigned concurrency
Saint-Esprit47.376.146 R-158 west – Saint-Lin-Laurentides, Saint-JérômeSouth end of R-158 concurrency; A-25 becomes unsigned; R-125 becomes signed
48.678.2Rue Montcalm / Rang de la Rivière SAt-grade (traffic signals)
49.379.3 R-125 north – Sainte-Julienne, Rawdon, Saint-Donat
R-158 east – Joliette, Saint-Jacques
A-25 northern terminus[1]
1.000 mi = 1.609 km; 1.000 km = 0.621 mi


  1. ^ a b c "Répertoire des autoroutes du Québec - Transports et Mobilité durable Québec". Ministère des Transports. Gouvernement du Québec. Retrieved May 29, 2023.
  2. ^ a b Google (December 21, 2018). "Autoroute 25 in Quebec" (Map). Google Maps. Google. Retrieved December 21, 2018.
  3. ^ Transports Québec: "Répertoire des autoroutes du Québec", 2007. Archived 2010-01-11 at the Wayback Machine
  4. ^ Conseil Régional de l'Environnement de Montréal. "L'AGRICULTURE SUR LE TERRITOIRE DE LA COMMUNAUTÉ MÉTROPOLITAINE DE MONTRÉAL ET LES IMPACTS DE LA PROLONGATION DE L'AUTOROUTE 25" (PDF). Archived from the original (PDF) on 6 July 2011. Retrieved 7 March 2011.
  5. ^ Conseil Régional de l'environnement de Montréal. "10 raisons d'être contre le prolongement de l'autoroute 25" (PDF). CREMTL. Archived from the original (PDF) on 6 July 2011. Retrieved 7 March 2011.

External links

Preceded by TCH-blank.svg Trans-Canada Highway
Quebec Autoroute 25.svg Autoroute 25
Succeeded by