Alberta Highway 12

Highway 12 begins at Highway 22, approximately 10 km (6 mi) north of Rocky Mountain House, and travels due east to Bentley where it intersects Highway 20. It continues along the south of Gull Lake and the summer village of Gull Lake, before intersecting Highway 2 (Queen Elizabeth II Highway). East of Highway 2, it passes through the city of Lacombe as 50 Avenue before continues east past the village of Clive. At the intersection of Highway 50 near Tees, Highway 12 turns southeast, passing through the village of Alix and shares a short concurrency with Highway 21, before turning east at Highway 11 near Nevis. It passes through Erskine before it enters Stettler and intersects Highway 56. East of Stettler, it passes Botha, Gadsby, and Halkirk before turning southeast. It passes through Castor, intersects Highway 36 (Veterans Memorial Highway), and passes through Fleet, Coronation, Throne, and Veteran. It shares a 18 km (11 mi) concurrency with Highway 41 (Buffalo Trail) between Consort and Monitor before continuing past Kirriemuir and Altario, finally reaching the Saskatchewan border near Compeer where it continues as Saskatchewan Highway 51.[3]

Highway 12 originally travelled 90 km (56 mi) north from Bentley, through Rimbey and Breton, terminating at Highway 39 at Alsike.[4] In January 1988, the section north of Bentley was renumbered to Highway 20 while Highway 51, which at the time traveled west from Bentley and terminated at Highway 761 north of Leslieville, became part of Highway 12.[5] In the 1990s, Highway 12 was extended west to Highway 22.[6]

From west to east:[7]

Rural/specialized municipality	Location	km[1]	mi	Destinations	Notes
Clearwater County	​	0.0	0.0	Hwy 22 – Drayton Valley, Rocky Mountain House
		22.7	14.1	Hwy 761 – Leslieville
Lacombe County	​	39.0	24.2	Hwy 766 – Eckville
	Bentley	58.6	36.4	Hwy 20 – Rimbey, Sylvan Lake
		61.2	38.0	Hwy 12A east (44 Street)
	Gull Lake	68.6	42.6	Hwy 12A west – Aspen Beach Provincial Park
	​	70.4	43.7	Hwy 792 north – Crestomere
City of Lacombe		79.2	49.2	Hwy 2 – Edmonton, Red Deer, Calgary	Interchange; exit 422 on Hwy 2
		83.0	51.6	Hwy 2A – Ponoka, Red Deer
Lacombe County	​	96.4	59.9	Hwy 815 – Ponoka, Joffre
		102.1	63.4	UAR 111 north – Clive
		110.4	68.6	UAR 88 north – Tees
		111.0	69.0	Hwy 821 north
		111.4	69.2	Hwy 50 east – Mirror, Bashaw
	Alix	124.2	77.2	Hwy 601 – Buffalo Lake
	​	129.9	80.7	Hwy 21 north – Mirror, Bashaw, Camrose	West end of Hwy 21 concurrency; unsigned Hwy 921 south
↑ / ↓	​	131.6	81.8	Hwy 21 south – Delburne, Three Hills	East end of Hwy 21 concurrency
County of Stettler No. 6	Nevis	137.3	85.3
	​	139.4	86.6	Hwy 11 west – Red Deer
	Erskine	147.6	91.7	Hwy 835 – Rochon Sands
Town of Stettler		159.3	99.0	Hwy 56 (59 Street) – Camrose, Drumheller
		160.4	99.7	47 Avenue / 50 Street	Hwy 12 branches south, then turns east
County of Stettler No. 6	​	169.9	105.6	Hwy 850 north – Red Willow, Donalda	West end of Hwy 850 concurrency
	Botha	173.3	107.7	Hwy 850 south	East end of Hwy 850 concurrency
	Gadsby	185.4	115.2	Hwy 852 north
County of Paintearth No. 18	​	198.4	123.3	Hwy 855 north – Big Knife Provincial Park, Daysland	West end of Hwy 855 concurrency
	Halkirk	200.3	124.5	Hwy 855 south – Endiang	East end of Hwy 855 concurrency
	Castor	218.5	135.8	Hwy 861 north (45 Street) to Hwy 599 east
	​	222.9	138.5	Hwy 36 – Viking, Killam, Hanna, Brooks
	Coronation	253.1	157.3	Hwy 872 south	West end of Hwy 872 concurrency
		254.8	158.3	Hwy 872 north – Hardisty	East end of Hwy 872 concurrency
Special Area No. 4	Veteran	278.4	173.0	Hwy 884 north – Hughenden, Amisk	West end of Hwy 884 concurrency
	​	280.0	174.0	Hwy 884 south – Youngstown	East end of Hwy 884 concurrency
	Consort	303.2	188.4	Hwy 41 north – Wainwright Hwy 886 south – Cereal	West end of Hwy 41 concurrency
	Monitor	320.5	199.1	Hwy 41 south – Oyen, Medicine Hat	East end of Hwy 41 concurrency
	​	338.1	210.1	Range Road 31 – Kirriemuir
	Altario	349.5	217.2	Hwy 899 – Provost, Esther
	Compeer	363.8	226.1	Hwy 51 east – Kerrobert, Biggar	Continues into Saskatchewan
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Concurrency terminus

Alberta Provincial Highway No. 12A is the designation of a 9 km (6 mi) alternate route off Highway 12 serving the south shore of Gull Lake.[2]

In 2012, Alberta Transportation commenced construction of a realignment of Highway 12 between Bentley and Gull Lake, approximately one-half kilometre (¹⁄₄ mi) south of the original alignment, bypassing the two communities as well as Aspen Beach Provincial Park.[8] In 2017, Highway 12 was designated along the new roadway while the former alignment became Highway 12A.