This 3.6 km (2.2 mi) segment crosses the Crowsnest River and provides a viewing opportunity of Lundbreck Falls.

It diverges from Highway 3 southeast of Coalhurst, in the form of a Y interchange running for only 650 m (2,130 ft) in the Lethbridge County before ending at Lethbridge city limits and continuing as Westside Drive;[2] essentially the area inside the provincially maintained interchange right-of-way,[1] and is unsigned.

It is a remnant of a larger 6 km (4 mi) route that followed present-day Westside Drive and Bridge Drive and was the original western approach the Highway 3 bridge over the Oldman River; it was commissioned in 1966 when Highway 3 twinned and realigned.

[3][4] All but the extreme western portion of the route was decomissied when the area was annexed by the City of Lethbridge in the mid-1980s.

[5] The fourth and easternmost segment is also an original alignment of Highway 3, passing through the centre of Barnwell.