It continues east to cross into Summit County and meets the western terminus of SR-35 in Francis.

[6] When US-189 was created in 1938, it overlapped US-40 between Heber and Kimball Junction,[citation needed] but it was soon modified to leave US-40 at Hailstone and follow what is now all SR-32 through Kamas to Wanship.

[2] The Utah Department of Transportation (UDOT) built a relocation of US-40 in the late 1980s to bypass the valley that would be filled by the Jordanelle Reservoir.

However, Summit and Wasatch Counties did not wish to maintain the roadway west from Francis, and the Federal Highway Administration pointed out that the realignment of US-189 would take it out of the way by more than 15 miles (24 km).

As part of a mileage swap, SR-32 was extended along former county routes to reconnect to US-189 and connect to US-40 via the southern shore of the reservoir.