Provincial Trunk Highway 18 (PTH 18) is a provincial highway in the Canadian province of Manitoba. Located in the Westman Region, it is a north-south route, with the southern terminus at the St. John–Lena Border Crossing at the Canada–United States border and the northern terminus at PTH 2, 7.1 kilometres (4.4 miles) southeast of Wawanesa. The highway passes through the communities of Killarney and Ninette. It is designated as an RTAC route, meaning it is capable of handling RTAC vehicles such as a truck, a truck and pony trailer, a truck and full trailer, a truck tractor and semi-trailer, an A-train, a B-train, or a C-train.^{[1][further explanation needed]}

Quick Facts Provincial Trunk Highway 18, Route information ...

Provincial Trunk Highway 18
Route information
Maintained by Department of Infrastructure
Length	64.6 km[citation needed] (40.1 mi)
Major junctions
South end	ND 30 (St. John–Lena Border Crossing)
Major intersections	PTH 3 in Killarney PTH 23 in Ninette
North end	PTH 2 near Wawanesa
Location
Country	Canada
Province	Manitoba
Rural municipalities	Glenboro – South Cypress Killarney-Turtle Mountain Prairie Lakes
Highway system
Provincial highways in Manitoba Winnipeg City Routes
← PTH 17 → PTH 19

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PTH 18 begins in the Rural Municipality of Killarney-Turtle Mountain at the North Dakota Border, with the road continuing into Rolette County towards St. John and Rolla as North Dakota Highway 30 (ND 30). The border crossing lies only 6.5 miles (10.5 km) west from Turtle Mountain. The highway heads due north through farmland for a few kilometers to pass through Lena, where it has an intersection with PR 341. It becomes concurrent (overlapped) with PTH 3 (part of the Boundary Commission Trail), and the two head north to cross the Long River into the town of Killarney, with PTH 3 (as well as the Boundary Commission Trail) splitting off and heading west along the banks of Killarney Lake while PTH 18 continues north through neighborhoods and a business district as it bypasses downtown along its eastern side. PTH 18 leaves Killarney to cross the Pembina River and have a junction with PR 253 before entering the Rural Municipality of Prairie Lakes.

The highway has a short concurrency with PTH 23 as it travels through Ninette, traveling along the coast lines of Pelican Lake and Grassy Lake, crossing a creek and traveling through wooded areas and past several smaller lakes as it enters the Rural Municipality of Glenboro-South Cypress. After a few kilometers, PTH 18 comes to an end at intersection with PTH 2 (Red Coat Trail), approximately 5 kilometres (3.1 mi) southeast of Wawanesa.

The entire length of Manitoba Highway 18 is a rural, paved, two-lane highway.^[2][3]

PTH 18 was designated by 1928 from the United States border to south of Killarney. In 1929, it extended north to Wawanesa, replacing PTH 19.

This section needs to be updated. The reason given is: the table needs current statistics to make it relevant. (June 2020)

AADT annual average daily traffic which is an estimate of typical daily traffic for all days of the week over a one-year period.

— Manitoba Highways and Government Services, Manitoba Highway Traffic Information System.^[4]

• List of Manitoba provincial highways
• List of rural municipalities in Manitoba