That was only a 100 foot section of a deck bridge that spanned the Mianus River in CT. I traveled that route all the time back then; they diverted traffic onto local streets and it was a mess. They did open a temporary crossing with reduced capacity, but it was about 3 months before I-95 was fully open. And it was only on the northbound side, so they still had the southern span in place. Much different type bridge replacement. When they recently replace the Tappen Zee Bridge over the Hudson River, it took about 5-years to complete.