Highway 12 is a major highway in the Canadian province of Saskatchewan. It begins in Saskatoon at the intersection of Idylwyld Drive and Highway 11 north (formerly beginning further south at the intersection with 22nd Street), initially running north on Idylwyld Drive concurrently with Highway 11 and Highway 16. Just outside Saskatoon's northern city limits, Highway 11 exits northeast from Idylwyld Drive and Highway 12 begins and travels north, passing through the city of Martensville. Highway 12 cross the North Saskatchewan River over Petrofka Bridge and passes through the town of Blaine Lake and intersects highway Highway 40, finally terminating at Highway 3 near Shell Lake. Highway 12 is about 135 km (84 mi) long.

History

Provincial Highway 12 was originally the designated route which connected Saskatoon and Prince Albert, following present-day Highway 12 to the Hepburn area, then following present-day Highway 312 to Rosthern, before continuing northwest to Prince Albert. In the mid-1950s, the route was renumbered to Highway 11; however, in the 1960s Highway 11 was realigned to follow a more direct route to Rosthern through Warman and Hague. Combined with the opening of the Petrofka Bridge in 1962, Highway 12 was revived and went to Highway 40 at Blaine Lake. In the 1970s, Highway 12 was extended north to Shell Lake.

Major intersections

From west to east:

Rural municipality	Location	km	mi	Destinations	Notes
City of Saskatoon		−5.1	−3.2	Idylwyld Drive south – City Centre Circle Drive (Hwy 11 south / Hwy 16 (TCH) east) – Airport, Yorkton, Regina	Interchange; former Hwy 12 southern terminus
		−3.8	−2.4	Avenue C south / 51 Street east – Airport	Interchange
		−2.6	−1.6	Hwy 16 (TCH/YH) west – The Battlefords	Interchange; northbound exit and southbound entrance; north end of Hwy 16 concurrency
Corman Park No. 344	​	0.0	0.0	Hwy 11 north – Warman, Prince Albert	Interchange; northbound exit and southbound entrance; Hwy 12 southern terminus
	Martensville	8.7	5.4	Township Road 384	Interchange
	​	11.9	7.4	Hwy 305 – Dalmeny, Warman
Laird No. 404	​	24.9	15.5	Greenfeld access road
	​	34.6	21.5	Hwy 375 west – Hepburn Hwy 785 east – Hague
	​	35.7	22.2	Hwy 312 north – Waldheim, Rosthern
	​	48.5	30.1	Waldheim access road
↑ / ↓	​	52.9	32.9	Petrofka Bridge across the North Saskatchewan River
Great Bend No. 405	​	55.2	34.3	Hwy 781 west
Blaine Lake No. 434	Blaine Lake	73.9	45.9	Hwy 40 – The Battlefords, Prince Albert
Leask No. 464	​	91.1	56.6	Hwy 783 east – Marcelin
	​	112.9	70.2	Hwy 792 east – Leask
Canwood No. 494	Shell Lake	133.9	83.2	Hwy 3 – Glaslyn, Prince Albert Shell Lake access road	Hwy 12 northern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Closed/former       Incomplete access