Every day, The Overhead Wire collects national and international news about cities and sends the links to their email list. At the end of the week they post some of the most popular stories to Greater Greater Washington, a group blog similar to Streets.mn that focuses on urban issues in the D.C. region. Light rail begins bridge tests: Sound Transit began full testing of the light rail on the I-90 floating bridge in Seattle, signaling the start of a new era in the region. The 2 Line extensi...