(Gresham, OR)  --  A seven-day MAX disruption is underway in Gresham.  Crews are replacing a decades-old rail crossing in the Rockwood Neighborhood.  It's located about a thousand feet southeast of the 188th Avenue station.  New rail will be installed along with a better crossing for vehicles.  Five MAX stations are closed between the East 172nd Avenue and Civic Drive MAX stations.  Buses are running in place of the Blue Line trains.  Service will return to normal on Sunday April 14th.