If you’re a Red Line commuter or frequent Cambridge’s Area IV/Kendall Square, you’re going to have some transport problems.

WCVB reports the Massachusetts Department of Transportation has approved a contract for three years worth of repairs to the 107-year old bridge. It’s needed, but the impact will be major.

Starting this summer, automobile traffic will be one-way into Boston. Red Line service will be disrupted 25 weekends. Cambridge-bound car traffic will be diverted to the Charles River Dam Bridge.