| | New Haven Railroad Historical Events |
| | Date | | Category | | Event |
| | 3/18/1844 | | Incorporation | OLD COLONY RAILROAD CORPORATION (No. 2) incorporated in Massachusetts, with authority to construct a railroad |
| | from South Boston to Plymouth. |
| | 3/18/1844 | | Incorporation | STOUGHTON BRANCH RAILROAD COMPANY incorporated. Constructed a railroad from the Boston and Providence |
| | main line at Canton Junction to Stoughton where it later connected with the Easton Branch Railroad, 3.4 miles. Operated by |
| | Boston and Providence Railroad Corporation from the time of opening. (Company organized May 28, 1844.) |
| | 3/22/1845 | | Incorporation | RANDOLPH & BRIDGEWATER RAILROAD CORPORATION incorporated in Massachusetts, |
| | with authority to construct a railroad from Bridgewater to the Old Colony at Braintree. |
| | 3/26/1845 | | Merger | UNITED CORPORATION OF THE MIDDLEBOROUGH RAILROAD CORPORATION with THE |
| | FALL RIVER BRANCH RAILROAD COMPANY and the RANDOLPH & BRIDGEWATER RAILROAD |
| | CORPORATION incorporated in Massachusetts (a union of the three companies.) |
| | 3/26/1845 | | Incorporation | MIDDLEBOROUGH RAILROAD CORPORATION incorporated in Massachusetts, with authority to construct a railroad |
| | from Bridgewater to the Fall River Branch Railroad. |
| | 3/26/1845 | | Incorporation | Middleborough RR Corp. incorporated. |
| | 3/28/1846 | | Incorporation | SOUTH SHORE RAILROAD COMPANY incorporated in Massachusetts, with authority to |
| | construct a railroad from the railroad of the Old Colony Railroad Corporation at Braintree to Cohasset, 11.5 miles. |
| | 3/20/1847 | | Incorporation | STOCKBRIDGE & PITTSFIELD RAILROAD COMPANY incorporated in Massachusetts, built railroad from Van |
| | Deusenville on the Berkshire Railroad to Pittsfield, 22.7 miles. (Company organized July 3, 1848.) |
| | 3/21/1847 | | Opening of Service | BRANCH RAILROAD from Hartford and New Haven Railroad to Connecticut River in Hartford opened. |
| | 3/24/1848 | | Lease | NEW HAVEN & NORTHAMPTON COMPANY lease made perpetual. |
| | 3/25/1848 | | Incorporation | Randolph and Bridgewater RR Corp. incorporated. |
| | 3/26/1848 | | Incorporation | United Corporation of the Middleborough RR Corp. with the Fall River Branch RR Co. and the Randolph and Bridgewater |
| | RR Corp. incorporated. |
| | 3/2/1849 | | Incorporation | THE MIDDLETOWN RAILROAD COMPANY organized. |
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