TriMets Green Line MAX trains were disrupted for about an hour early Monday morning when a piece of plastic was caught in the overhead wire.
TriMet officials said trains were stopped after 6 a.m. Jan. 20 between Main Street and Clackamas Town Center. Shuttle buses carried passengers between the stations during the shutdown.
Service was restored at about 7 a.m. TriMet officials said riders should expect delays through about 8:40 a.m.
TriMet set up a bus where passengers at the Main Street Station could stay warm during the delay.