Quebec Route 257

{{Infobox road

|province=QC

|type=QC

|route=257

|maint=

|map=Route 257-QC.png

|established=

|decommissioned=

| length_km = 85

|length_round =1

|direction_a=South

|direction_b=North

|length_ref=Ministère des transports, "Distances routières", page (?), Les Publications du Québec, 2005

|terminus_a={{jct|state=NH|US|3}} near Pittsburg, NH

|terminus_b={{jct|state=QC|QC|216}} in Saint-Adrien

|junction={{jct|state=QC|QC|112}} at Weedon

{{jct|state=QC|QC|108}} at Gould

|cities= Weedon, Scotstown

|previous_type=QC

|previous_route=255

|next_type=QC

|next_route=259

}}

Route 257 is a north–south highway on the south shore of the St. Lawrence River, in the Eastern Townships region of Quebec, Canada. Its northern terminus is in Saint-Adrien at a junction with Route 216, and its southern terminus is at the Pittsburg–Chartierville Border Crossing, where it becomes U.S. Route 3 as it enters Pittsburg, New Hampshire.

Towns along Route 257

File:Frontiere Chartierville2.jpg|South end of Route 257 at Chartierville border control.

File:Magnetic Hill Quebec 09.jpg|In Chartierville, a posted magnetic hill.

File:Quebec Route 210 Eastern terminus in Chartierville, Quebec.jpeg|Junction with 210 in Chartierville.

File:Scotstown3.jpg|Routes 214 and 257 in Scotstown.

File:Panneau du vieux pont - panoramio.jpg|Route 257 in Lingwick.

File:Route 257 road - panoramio.jpg|Route 257 near Weedon.

File:Weedon rue St-Janvier.jpg|Saint-Janvier street in Weedon.

File:Vers Weedon - panoramio.jpg|Route 257 towards mont Ham.

{{Commons category-inline}}
[https://maps.google.com/maps?f=d&saddr=St-Adrien,+Asbestos,+Quebec,+Canada&daddr=RTE-257%2FRTE-257+E+%4045.740681,+-71.517576+to:RTE-257+%4045.553379,+-71.333744+to:45.253863,-71.206169&hl=en&geocode=13421166620185501398,45.740681,-71.517576%3B11407372041288357315,45.553379,-71.333744&mra=dme&mrcr=0&mrsp=3&sz=12&via=1,2&sll=45.27537,-71.187973&sspn=0.111134,0.30899&ie=UTF8&ll=45.560218,-71.435852&spn=0.884601,2.471924&z=9 Route 257] on Google Maps
[http://www.inforoutiere.qc.ca/fr/carte_routiere/index.asp Provincial Route Map (Courtesy of the Quebec Ministry of Transportation)] {{in lang|fr}}