# Quebec Route 125

Route 125 is a Quebec highway running from Montreal (on Pie-IX Boulevard near the Olympic Stadium) to Saint-Donat, Lanaudière, Quebec in the Lanaudière. The southern section of Route 125 runs parallel to Autoroute 25 in Laval, Mascouche, and Terrebonne. At Saint-Esprit, the Autoroute ends, and 125 continues northwards until the entrance to the Mont Tremblant Provincial Park north of Saint-Donat.

## Trace

Route 125, a road parallel to the A-25, begins at the corner of Sherbrooke Street East (Route 138) in Montréal, under the name of "Boulevard Pie-IX." It keeps this name until it meets with the A-440 after crossing the Rivière des Prairies on the Pie-IX Bridge. In between the Pie-IX Bridge and the A-440, it has a highway configuration and has two lanes in each direction separated by a median, crossing the streets it crosses with the help of an overpass and connected to these lanes by access ramps.
It then crosses the Île Jésus ( Laval ) and the Mille Îles River on the Sophie-Masson Bridge to arrive in Terrebonne. Following its concurrency with the A-440, it looks more like a secondary road, being quite narrow until Route 344, with which it makes a small concurrency before joining the Montée Masson in Terrebonne. From there, it heads to the city of Mascouche, of which it is its main road. Once past the city of Mascouche, it looks again like a narrow secondary road and does not even have a double yellow line.
When it reaches Saint-Roch-de-l'Achigan, it is a little used country road. At the junction of Route 339, it takes it to form a small concurrency with the A-25 at its northern end. From Saint-Esprit, Route 125 becomes the main traffic route to the northwest of the Lanaudière region, the A-25 ending at Saint-Esprit. It heads towards Sainte-Julienne, where it forms a small concurrency with Route 337 to the vicinity of Rawdon.
After Chertsey, for about 10 kilometres in the Entrelacs sector, it is a four-lane divided road. It then reaches Saint-Donat before ending at the entrance of Mont-Tremblant National Park.

## Municipalities along Route 125

* Montreal (Rosemont–La Petite-Patrie / Villeray–Saint-Michel–Parc-Extension / Montréal-Nord)
* Laval
* Terrebonne
* Mascouche
* Saint-Roch-de-l'Achigan
* Saint-Roch-Ouest
* Saint-Esprit
* Sainte-Julienne
* Rawdon
* Chertsey
* Entrelacs
* Notre-Dame-de-la-Merci
* Saint-Donat

## Major intersections

| RCM | Location | km | mi | Exit | Destinations | Notes |
| Montréal | Montréal | 0.0 | 0.0 | | Rue Sherbrooke (R-138) / Boulevard Pie-IX | A-125 southern terminus; Boulevard Pie-IX continues south |
| Montréal | Montréal | 3.9 | 2.4 | | A-40 (TCH) – Québec, Ottawa, Gatineau | A-40 exit 76 |
| Rivière des Prairies | Rivière des Prairies | 8.7– 9.1 | 5.4– 5.7 | Pont Pie-IX (Pie IX Bridge) | Pont Pie-IX (Pie IX Bridge) | Pont Pie-IX (Pie IX Bridge) |
| Laval | Laval | 9.5 | 5.9 | – | Boulevard de la Concorde / Boulevard Lévesque | Interchange |
| Laval | Laval | 10.4 | 6.5 | – | Boulevard Saint-Martin | Interchange; former R-148 west |
| Laval | Laval | 11.1 | 6.9 | – | Boulevard Lite | Interchange; southbound exit and northbound entrance; northbound exit via Avenue Laplace |
| Laval | Laval | 11.5 | 7.1 | 30 | A-440 west / Boulevard Pie-IX north | A-440 exit 30; south end of A-440 concurrency; exit numbers follow A-440 |
| Laval | Laval | 12.5 | 7.8 | 31 | Montée Saint-François | |
| Laval | Laval | 14.9– 16.0 | 9.3– 9.9 | 34 35 | A-25 / A-440 ends – Terrebonne, Montréal | A-440 northern terminus and concurrency; A-25 exit 17; no access from A-25 north to R-125 north; signed as exits 34 (A-440 to R-125) and 35 (A-440 to A-25) |
| Rivière des Mille Îles | Rivière des Mille Îles | 20.4– 20.9 | 12.7– 13.0 | Pont Sophie-Masson (Sophie Masson Bridge) | Pont Sophie-Masson (Sophie Masson Bridge) | Pont Sophie-Masson (Sophie Masson Bridge) |
| Les Moulins | Terrebonne | 21.2 | 13.2 | | R-344 east (Rue Saint-Louis) | South end of R-344 concurrency; R-125 follows Rue Saint-Louis |
| Les Moulins | Terrebonne | 21.4 | 13.3 | | R-344 west (Rue Saint-Louis) | North end of R-344 concurrency; R-125 follows Montée Masson |
| Les Moulins | Terrebonne | 23.7 | 14.7 | | A-25 to A-640 / Grande Allée – Montréal, Rawdon | A-25 exit 24 |
| Montcalm | Saint-Roch-Ouest | 43.1 | 26.8 | 44 | R-339 / Ancienne Route 125 – Saint-Roch-de-l'Achigan, Saint-Lin-Laurentides A-25 south – Montréal | South end of A-25 concurrency; exit numbers follow A-25; R-125 becomes unsigned |
| Montcalm | Saint-Esprit | 46.3 | 28.8 | 46 | R-158 west – Saint-Lin-Laurentides, Saint-Jérôme | South end of R-158 concurrency; A-25 becomes unsigned; R-125 signage resumes |
| Montcalm | Saint-Esprit | 49.9 | 31.0 | | A-25 ends / R-158 east – Saint-Jacques, Joliette | A-25 northern terminus; north end of A-25 / R-158 concurrency |
| Montcalm | Sainte-Julienne | 58.3 | 36.2 | | R-337 south / R-346 east – Saint-Calixte, Saint-Liguori | South end of R-337 concurrency; R-346 western terminus |
| Montcalm | Sainte-Julienne | 63.1 | 39.2 | | R-337 north – Rawdon | North end of R-337 concurrency |
| Matawinie | Rawdon | 67.3 | 41.8 | | R-348 east – Rawdon | |
| Matawinie | Rawdon | 74.1 | 46.0 | | R-341 south – Rawdon | |
| Matawinie | Rawdon – Chertsey boundary | 77.4 | 48.1 | | R-335 south – Saint-Calixte | |
| Matawinie | Notre-Dame-de-la-Merci | 105.2 | 65.4 | | R-347 south – Saint-Côme | |
| Matawinie | Saint-Donat | 120.1 | 74.6 | | R-329 south – Lantier, Sainte-Agathe-des-Monts | |
| Matawinie | Saint-Donat | 132.6 | 82.4 | | Parc national du Mont-Tremblant | R-125 northern terminus; continues into Mont-Tremblant National Park |
| 1.000 mi = 1.609 km; 1.000 km = 0.621 mi Concurrency terminus Incomplete access |||||||