I-84, for the most part, follows the later CRH alignment around the Wyeth Bench.
Apparently only one confirmed fragment exists aside from what was destroyed by the construction of the freeway, though there are some old road grades that are visible through the trees south of the freeway.
These may be detour routes or other remains from the construction of I-80N, but one at the east end is very puzzling and may, in fact, be a remnant of the 1917 CRH alignment.