On April 18, 1837, the Andover and Wilmington Railroad underwent a significant reorganization, adopting the name Andover and Haverhill Railroad. This strategic move was part of a broader plan to extend its rail line to Haverhill, Massachusetts, thereby enhancing connectivity and facilitating economic growth in the region. The rebranding reflected the company's commitment to expanding its reach and improving transportation infrastructure in the northeastern United States.
The Andover and Haverhill Railroad played a pivotal role in the development of the Massachusetts Bay Transportation Authority (MBTA) commuter rail system. Its legacy is evident in the modern rail services that continue to serve the Boston metropolitan area, underscoring the enduring impact of early 19th-century rail initiatives on contemporary transportation networks.