▁and ▁it ▁became ▁a ▁small ▁country ▁town ▁whose ▁principal ▁export ▁was ▁app les . ▁ ▁Tw enti eth ▁and ▁twenty - first ▁centuries ▁ ▁A ▁fer ry ▁service ▁ran ▁from ▁Lower ▁St ▁George ▁Street ▁across ▁the ▁river ▁to ▁Gran ville ▁Fer ry ▁from ▁the ▁early ▁ 1 9 th ▁century ▁but ▁in ▁ 1 9 2 1 ▁a ▁bridge ▁was ▁built ▁to ▁link ▁the ▁two ▁sides ▁of ▁the ▁est u ary . ▁This ▁bridge ▁col lapsed ▁in ▁ 1 9 6 1 ▁( l uck ily , ▁with ▁no ▁loss ▁of ▁life ) ▁and ▁was ▁replaced ▁by ▁a ▁cause way , ▁already ▁under ▁construction . ▁In ▁ 1 9 8 4 ▁this ▁cause way ▁became ▁a ▁component ▁of ▁the ▁Ann apolis ▁Royal ▁T idal ▁Power ▁Gener ating ▁Station . ▁ ▁The ▁construction ▁of ▁the ▁tid al ▁generating ▁station ▁by ▁the ▁then - prov inci ally ▁owned ▁elect rical ▁utility ▁Nova ▁Scot ia ▁Power ▁Inc . ▁was ▁part ▁of ▁a ▁pilot ▁project ▁to ▁investigate ▁this ▁alternative ▁method ▁of ▁generating ▁electric ity . ▁To ▁date , ▁it ▁is ▁so ▁far ▁the ▁only ▁working ▁tid al ▁power ▁plant ▁in ▁North ▁America . ▁The ▁generating ▁station ▁has ▁created ▁tang ible ▁environmental ▁changes ▁in ▁water ▁and ▁air ▁temper atures ▁in ▁the ▁area , ▁s ilt ation ▁patterns ▁in ▁the ▁river , ▁and ▁increased ▁er os ion ▁of ▁the ▁river ▁banks ▁on ▁both ▁sides ▁of ▁the ▁dam , ▁but ▁after ▁more ▁than ▁three ▁dec ades ▁of ▁operation ▁it ▁seems ▁to ▁have ▁proved ▁vi able ▁on ▁the ▁whole . ▁