sentences:  An iron railway bridge on stone piers was constructed over the St. Croix, measuring approximately 30 metres (100 feet) in length.The opening ceremony in 1871 of the railway line between the two countries was attended by Governor General of Canada Lord Lisgar and President of the United States Ulysses S. Grant.During the 1870s, financial difficulties saw the line from Saint John to St. Croix sold to the New Brunswick Railway (NBR).