Quebec Route 138

You can help expand this article with text translated from the corresponding article in French. Click [show] for important translation instructions. Machine translation, like DeepL or Google Translate, is a useful starting point for translations, but translators must revise errors as necessary and confirm that the translation is accurate, rather than simply copy-pasting machine-translated text into the English Wikipedia. Do not translate text that appears unreliable or low-quality. If possible, verify the text with references provided in the foreign-language article. You must provide copyright attribution in the edit summary accompanying your translation by providing an interlanguage link to the source of your translation. A model attribution edit summary is Content in this edit is translated from the existing French Wikipedia article at [[:fr:Route 138 (Québec)]]; see its history for attribution. You may also add the template {{Translated|fr|Route 138 (Québec)}} to the talk page. For more guidance, see Wikipedia:Translation.

Route 138
Chemin Du Roy
Route information
Maintained by Transports Québec
Length	1,420 km[1] (880 mi)
History	Route 2 (Montreal – Quebec City) Route 2C (through Quebec City) Route 4 (U.S. border – Montreal) Route 15 (Quebec City – Baie-Comeau)
Major junctions
West end	NY 30 at Constable, New York
Major intersections	A-30 / R-132 in Châteauguay A-20 in Montreal A-15 in Montreal R-112 / R-134 / R-125 in Montreal A-25 (TCH) in Montreal A-640 in Repentigny R-131 in Lavaltrie A-40 / R-158 in Berthierville R-153 in Yamachiche A-40 / A-55 / R-157 in Trois-Rivières R-159 in Sainte-Anne-de-la-Pérade A-40 in Saint-Augustin-de-Desmaures A-540 in Quebec City A-40 / A-73 in Quebec City A-740 / A-973 / R-175 in Quebec City A-440 in Quebec City R-170 in Saint-Siméon R-172 in Tadoussac R-389 in Baie-Comeau
East end	Route 510 east of Blanc Sablon
Location
Country	Canada
Province	Quebec
Highway system
Quebec provincial highways Autoroutes List Former
← R-137 → R-139

Route 138 is a major highway in the Canadian province of Quebec, following the entire north shore of the St. Lawrence River past Montreal to the temporary eastern terminus in Kegashka on the Gulf of St. Lawrence. The western terminus is in Elgin, at the border with New York State south-west of Montreal (connecting with New York State Route 30 at the Trout River Border Crossing). Part of this highway is known as the Chemin du Roy,^[2] or King's Highway, which is one of the oldest highways in Canada.^[2][3]

It passes through the Montérégie, Montreal, Lanaudière, Mauricie, Capitale-Nationale and Côte-Nord regions of Quebec. In Montreal, Highway 138 runs via Sherbrooke Street, crosses the Pierre Le Gardeur Bridge to Charlemagne and remains a four-lane road until exiting Repentigny.

This highway takes a more scenic route than the more direct Autoroute 40 between Montreal and Quebec City. It crosses the Saguenay River via a ferry which travels between Baie-Sainte-Catherine and Tadoussac; in the event of a closure of this ferry, drivers must take a significant detour via Quebec Route 172 and Quebec Route 170 to the city of Saguenay in order to cross the river by bridge.