 The Blue Water Bridge links Sarnia and its neighbouring village of Point Edward to the city of Port Huron in the United States . It spans the St. Clair River , which connects Lake Huron to Lake St. Clair . The bridge 's original three @-@ lane span , opened in 1938 , was twinned on 22 July 1997 , making the bridge the fourth busiest border crossing in Ontario . The Blue Water Bridge border crossing makes use of both the NEXUS ( frequent traveler program ) and the Free and Secure Trade ( FAST ) program . Linking Highway 402 with the American Interstate 94 ( I @-@ 94 ) and I @-@ 69 , the bridge forms part of the NAFTA Superhighway , and is one of the most important gateways on the north – south truck routes . 
 The Blue Water Bridge <a href='uninflect' title='1'><mark>links</mark></a> Sarnia and its neighbouring village of Point Edward to the city of Port Huron in the United States . It <a href='uninflect' title='2'><mark>spans</mark></a> the St. Clair River , which <a href='uninflect' title='3'><mark>connects</mark></a> Lake Huron to Lake St. Clair . The bridge <a href='null_genetive' title='4'><mark>'s</mark></a>original three @-@ lane span , opened in 1938 , was twinned on 22 July 1997 , making the bridge the fourth busiest border crossing in Ontario . The Blue Water Bridge border crossing <a href='uninflect' title='5'><mark>makes</mark></a> use of both the NEXUS ( frequent traveler program ) and the Free and Secure Trade ( FAST ) program . Linking Highway 402 with the American Interstate 94 ( I @-@ 94 ) and I @-@ 69 , the bridge <a href='uninflect' title='6'><mark>forms</mark></a> part of the NAFTA Superhighway , and <a href='drop_aux' title='7'><mark>is</mark></a>one of the most important gateways on the north – south truck routes . 
Da Blue Water Bridge link Sarnia and its neighbouring village of Point Edward to the city of Port Huron in tdaUnited States . It span thdat. Clair River , which connect Lake Huron to Lake St. Clair . Thedaidge  original three @-@ lane span , opened in 1938 , was twinned on 22 July 1997 , makin the dadge the fourth busiest border crossing in Ontario . The Bda Water Bridge border crossing make use of both the NEda ( frequent traveler program ) and the Fredand Secure Trade ( FAST ) program . Linking Highway 402 with the American Interstate 94 ( I @-@ 94 ) and I @-@ 69 , the briddaform part of the NAFTA Superhighway , and one of the most daortant gateways on the north daouth truck routes .