 However, free transfers were unavailable between the platforms and each platform was meant to be served by its own line.The most recent configuration using both tracks consisted of the IRT Broadway–Seventh Avenue Line on the outer loop platform and the IRT Lexington Avenue Line on the inner loop platform.On July 10, 1905, the outer South Ferry platform was the first of the two platforms to open and was an extension of the original trunk line of the Interborough Rapid Transit Company.