The Hartford and New Haven Railroad (H&NH), chartered in 1833, was the first railroad built in the state of Connecticut and an important direct predecessor of the New York, New Haven and Hartford Railroad (the New Haven). The company was formed to connect the cities of New Haven, Connecticut, and Springfield, Massachusetts. It built northwards from New Haven, opening its first segment in 1838, and reaching Hartford in December 1839. The company reached Springfield in 1844 under the auspices of the Hartford and Springfield Railroad, a subsidiary chartered in Massachusetts. Branches were later built to Suffield, New Britain, and Middletown and operated by the Hartford and New Haven. The H&NH merged with the New York and New Haven Railroad in 1872, forming the New York, New Haven and Hartford Railroad.