New York State Route 40

State highway in eastern New York, US

the current alignment of NY 40
Soon crossing into Lansingburgh, NY 40 runs northeast through the eastern end of the cemetery, passing the nearby St. Peter's Cemetery as well. Just after crossing the northern limits of Oakwood Cemetery, the route crosses into the town of Brunswick, where it becomes maintained by Rensselaer County and gains the County Route 145 (CR 145) designation. Continuing north through Brunswick, NY 40 continues through Lansingburgh, which is where the route meets a junction with NY 142. NY 40 and NY 142 become concurrent for one block in front of the Lansingburgh Reservoir, before NY 40 turns northward once again. Now on Leversee Road, the route remains a two lane residential street, reaching a junction with the terminus of CR 116 (Brickyard Road). The current and original routings of NY 40 remained identical until the town of Hartford. The route left its current alignment north of the hamlet of Hartford and headed northeast to Middle Granville, where it met NY 22. NY 40 and NY 22 came together, forming an overlap westward to Truthville. NY 22 split from NY 40 here, veering off to the northwest, while NY 40 continued west to US 4 in Comstock, where it ended. NY 40 was realigned slightly by the following year to bypass Middle Granville entirely. Instead of heading northeast from Hartford, NY 40 went northward to West Granville, where it rejoined its previous alignment. By 1932, NY 40 was rerouted in the vicinity of Troy. It now left US 4 in the town of North Greenbush (south of Troy) and followed Winter Street northeastward into the city. Within Troy, NY 40 overlapped NY 66 to its end at Congress Avenue (then NY 96 and now NY 2) and briefly joined NY 96 westward to 15th Street. NY 40 turned north here, following 15th Street to Oakwood Avenue, where the route joined its modern routing.

Following the 1930s, NY 40 began to be reduced in size. In the early 1940s, NY 22 was realigned between Truthville and Whitehall to serve Comstock by way of NY 40 and US 4. As a result, NY 40 was truncated south to its junction with NY 149 in Hartford. The portion of NY 40's routing between Hartford and West Granville was a sub par road at the time (deemed as a second and third class highway by map cartographer General Drafting), which led the state to place the end of the route in Hartford instead. In the late 1950s, NY 40 was cut back on its southern end to begin at what had been the northern terminus of its overlap with US 4 in North Greenbush. NY 40 was re extended on its northern end c. 1962 to follow its former routing northeastward to Middle Granville, where it ended at NY 22. The alignment proved to be temporary as the Hartford–West Granville highway was improved during the mid 1960s and became part of a realigned NY 40 by 1968. The last change to NY 40's routing came in 1973 when it was truncated on its southern end to the junction of Hoosick Street (NY 7) and 10th Street in Troy. As a result, NY 40 was also realigned slightly to use 10th Street and Oakwood Avenue between Hoosick and 15th Streets. NY 40's former routing on Winter Street was redesignated as NY 405. On April 1, 1980, ownership and maintenance of the portion of NY 40 that lies south of NY 142 and outside of the Troy city limits was transferred from the state of New York to Rensselaer County as part of a large highway maintenance swap between the two levels of government. The routing of NY 40 was not altered; however, the part of the route given to the county is now co designated as CR 145 and is also co signed as such.