Index: roadmap.py
===================================================================
--- roadmap.py	(revision 7218)
+++ roadmap.py	(working copy)
@@ -326,6 +326,9 @@
         db = self.env.get_db_cnx()
         milestones = [m for m in Milestone.select(self.env, showall, db)
                       if 'MILESTONE_VIEW' in req.perm(m.resource)]
+        milestone_filter = req.args.get('milestone')
+        if milestone_filter:
+            milestones = [m for m in milestones if m.name in milestone_filter.split("|")]
         stats = []
         queries = []