The bridge was closed in 2010 after a March flood damaged the small span that connects the two towns and frequently was used by the Old Mystic Fire Department North Stonington Road station to respond to calls. A previous project to repair the bridge was stopped when the contractor doing the work discovered the damage was much more extensive than thought by the engineering firm that designed the work. The two towns since have been unable to agree in the same years to appropriate the money needed to gain state funding for the remaining 50% of the project.
https://www.theday.com/local-news/20200226/updated-old-mystic-bridge-closure-may-be-permanent