Sunset TC is the second-busiest station on the Westside MAX line, with a weekday average of almost 6,000 daily riders in 2012.

The transit center's MAX platforms are below street level, set in an open cut, immediately west of an unnamed 600-foot-long tunnel to the shoulder of Oregon Route 217.

[4] Under land development terms set by Washington County, J. Peterkort Co., which had owned the site of Sunset Transit Center, was required to include a transit center in the development of its 252-acre (102 ha) property north of the U.S. Route 26 (US 26) and Oregon Route 217 (OR 217) junction.

[6] The transit center effectively opened on September 12, 1998, with the start of MAX service and the addition of several more bus routes,[7] the latter altered to serve Sunset TC in place of the 1979-opened Cedar Hills Transit Center, located on the other side of the freeway (and closed permanently on this date).

Sunset TC is the second-busiest MAX station on Portland's west side, with a weekday average of almost 6,000 daily riders in 2012.