Traffic congestion during the morning commute on Interstate 90 has worsened in the past few years, but problems with slowdowns and delays are relatively minor compared to West Side freeways, state transportation planners said in a new traffic congestion analysis. I-90 is plagued with westbound backups in the vicinity of Fancher Road from about 7:30 to 8 a.m., and those backups have gotten worse from 2011 to 2013, the state said.