Boston|Cambridge-Craigie Bridge

Massachusetts Department of Transportation
Cambridge/Boston, Massachusetts

Adjacent to the Museum of Science, the Craigie Bridge is a critical commuting route linking the northern suburbs to downtown Boston. The roadway also serves as an emergency route to Massachusetts General Hospital and the TD Bank Garden. Faced with the choice of a lengthy bridge replacement project maintaining two way single lane traffic flow with a much shorter outbound only plus detour option, our engineers ascertained that the detour option was feasible. Inbound travel lanes on the bridge were closed and traffic was detoured in part of the comprehensive traffic management plan. The 16 week detour plan allowed the new bridge to be opened one year earlier than planned.

Modeling traffic is a proven practical method to predict traffic flow options. We couple traffic simulation with robust public outreach to clearly illustrate traffic flow possibilities and to present the best outcome.