Oregon Route 99E is an
Oregon state highway that runs between
Junction City, Oregon and an interchange with
I-5 just south of the Oregon/
Washington border, in
Portland. It, along with
OR 99W, makes up a split of
OR 99 in the northern part of the state. This split existed when the route was
US 99, the two branches were then
U.S. 99W and
U.S. Route 99E. (Another such split occurred in
California, but with the decommissioning of US 99, that state elected to rename its US 99W as
Interstate 5, rather than preserve the directional suffix).