|Maintained by Transports Québec|
|Length:||21.8 km (13.5 mi)|
|Existed:||1967 – present|
|South end:||A-20 / TCH in Longueuil|
| A-40 / TCH in Montreal
A-440 in Laval
A-640 between Terrebonne and Mascouche
|North end:||Route 125 / Route 158 in Saint-Esprit|
|Major cities:||Boucherville, Montreal, Laval, Terrebonne, Mascouche|
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.
A-25 is also part of the Trans-Canada Highway between the A-20 and A-40 interchanges.
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 $2.48 per crossing at peak hours (6-9 AM and 3:30-6:30 PM) and $1.86 per crossing the rest of the day. An additional $5.15 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.
|0 to 4||1967||Louis Hippolyte Lafontaine Bridge-Tunnel|
|4 to 7||1966||Avenue Souligny, Montreal to A-40, Montreal|
|7 to 10||2002||A-40, 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|
In addition, significant extensions are possible in the north end, which would ultimately double the length of A-25, as follows:
The ultimate length of A-25 will likely be around 100 km (62.1 mi) long.
|Longueuil||90 (?)||A-20 east / TCH east to A-30 – Québec, Sorel-Tracy||Southbound exit and northbound entrance|
|90||A-20 west / Route 132 to A-15 – Varennes, La Prairie, USA||Southbound exit and northbound entrance|
|1||Île Charron||to Îles de Boucherville national park|
|Louis Hippolyte Lafontaine Tunnel across the Saint Lawrence River|
|5||Route 138 (Rue Sherbrooke) / Rue Hochelaga, Rue Notre-Dame||Signed as exits 5-E (east) and 5-O (west) northbound|
|6||Rue Beaubien, Boulevard Yves-Prévost||Northbound exit is via exit 5-O|
|7||Boulevard Wilfrid-Pelletier, Boulevard Châteauneuf||Northbound exit and southbound entrance|
|8||A-40 / TCH west – Trois-Rivières, Québec, Gatineau, Ottawa||North end of TCH overlap; signed as exits 8-E (east) and 8-O (west)|
|9||Rue Bombardier||Northbound exit and southbound entrance|
|9||Boulevard Henri-Bourassa, Rue Bombardier||Southbound exit and Northbound entrance|
|10||Boulevard Henri-Bourassa, Boulevard Maurice-Duplessis, Boulevard Perras||LAST EXIT BEFORE TOLL BRIDGE (for Northbound only) Northbound exit and southbound entrance|
|10||Boulevard Perras, Boulevard Maurice-Duplessis||Southbound exit and Northbound entrance|
|Olivier Charbonneau Bridge (Toll bridge) over the Rivière des Prairies|
|14|| Route 125 (Montée Masson) / Rang du Bas-Saint-François, Avenue Marcel Villeneuve, Boulevard Lévesque (Northbound exit)//
Boulevard Lévesque (Southbound exit)
|LAST EXIT BEFORE TOLL BRIDGE (for Southbound only)|
|16||A-440 (Autoroute Laval)|
|20||Boulevard des Mille Îles|
|Pont Mathieu and Pont Lepage over the Rivière des Mille Îles|
|22||Route 344 (Boulevard des Seigneurs) – Terrebonne, Bois-des-Filion||Northbound exit and southbound entrance; signed as exits 22-E (east) and 22-W (west)|
|23||Route 337 Boulevard Moody, Chemin Gascon|
|24||Route 125 Montée Masson, Grande-Allée||Southbound exit is part of exit 25|
|25||A-640 to A-40 – Repentigny, Québec, Saint-Eustache, Avenue de l'Esplanade|
|28||Chemin Sainte-Marie - downtown Mascouche|
|34||Chemin Saint-Henri - L'Épiphanie|
|Saint-Roch-de-l'Achigan||38||Rue Armand-Majeau||Northbound only|
|41||Rang du Ruisseau-des-Anges Sud|
|Saint-Roch-Ouest||44||Route 339 (Route 125 south) – Saint-Roch-de-l'Achigan||South end of Route 125 overlap|
|Saint-Esprit||46||Route 158 west – Saint-Lin-Laurentides, Saint-Jérôme||South end of Route 158 overlap|
|Wikimedia Commons has media related to Quebec Autoroute 25.|