21 Bridge St, Porter, ME is a single family home that contains 1,215 sq ft and was built in 1890. It contains 3 bedrooms and 1 bathroom. This home last sold for $35,000 in January 2016. The Rent Zestimate for this home is $1,400/mo, which has decreased by $61/mo in the last 30 days. The property tax in 2016 was $900. The tax assessment in 2016 was $59,629, a decrease of 20.5% over the previous year.