Originally estimated as costing $2.8 million in 2013, the project’s cost is now estimated at nearly $3.2 million, of which each town would be responsible for 10 percent of – or $316,000 each – and each state’s department of transportation for 40 percent of – or $1.2 million each – according to the construction agreement between the Rhode Island DOT and Connecticut DOT.
https://www.theday.com/local-news/20180708/north-stonington-and-westerly-may-be-moving-forward-on-boombridge-road-project