Avenue NW. Then it climbs out of the river valley passing through an outdated interchange complex from the 60s at 16th Avenue and University Drive. Through that interchange Crowchild trail narrows to a total of four lanes forming a major bottleneck. It then continues up the hill widening to six lanes again before passing lights at 23 Avenue and 24 Avenue. This section of the road is heavily used by football fans from McMahon Stadium and students of the University of Calgary at certain times of the day. After 24 Avenue NW the road veers northwest, and once again becomes an uninterrupted freeway. CTrain tracks enter the median of the road at that point and run along the freeway for the rest of its distance with five CTrain stations located on the median all accessed by pedestrian bridges. Crowchild passes through eight interchanges until the Stoney Trail ring road where a cloverleaf interchange was completed in 2012. The total number of lanes then drops from six to four as it passes Tuscany Station which is the end of the CTrain line. At Twelve Mile Coulee Road the freeway ends and it passes through a set of signal lights before exiting the city as Highway 1A (The Crowchild Trail name is dropped when the road leaves the city). The highway continues as Bow Valley Trail (Highway 1A), eventually reaching Cochrane and Canmore. History Part of this road was the Morley Trail when it was an actual trail. It was first paved in the 1930s. It then became the main highway to Banff and was the home of Eamon's Bungalow Camp and service station. When the Trans-Canada Highway was created it dropped in importance. The road was originally signed as 24 Street SW from North Glenmore Park to the Bow River, 24 Street NW from the Bow River to the intersection with 16 Avenue NW, and Highway 1A from 16 Avenue NW to the city limits. The interchanges at Memorial Drive, 16 Avenue/University Drive, 17 Avenue and Bow Trail were constructed in the 60s in conjunction with the six lane bridge across the river, this was largely before plans for a road network were put together. Starting in 1969 the city began to plan a large freeway network and Crowchild trail was included in the plans. Most freeways originally proposed for the west side of the city never ended up being constructed