The Merritt Parkway is one of the oldest scenic
parkways in the
United States. The portion from Greenwich to Norwalk was opened on June 29, 1938. The section from Norwalk to Trumbull was completed in November 1939, and in 1940, it was finished to the
Housatonic River in Stratford. The parkway was named for U.S. Congressman
Schuyler Merritt, who was instrumental in enacting legislation allowing the parkway to be built. The Merritt Parkway is the first leg of what later became modern Route 15. Built between 1934 and 1940, the Merritt Parkway runs for from the New York state line in Greenwich to the Housatonic River in Stratford. It was conceived as a way to alleviate congestion on the
Boston Post Road (
U.S. Route 1) in
Fairfield County. After the parkway fully opened in 1940, travelers commonly stopped to
picnic along the side of the road. The Merritt Parkway Advisory Commission (later the Merritt Parkway Advisory Committee) decided to ban horses and buggies, bicycles, pedestrians, billboards, and U-turns, while a system of horse trails along the parkway was developed, but later abandoned. To ease objections from county residents, who feared an influx of New Yorkers on their roads, in their towns, on their beaches, and through their forests, highway planners called on engineers, landscape architects, and architects to create a safe and aesthetically pleasing limited-access highway, one with exit and entrance ramps, but no intersections, that would not spoil the countryside. The bridges played a prominent role in the design. Architect George L. Dunkelberger designed them all. They reflected the popularity of the Art Deco style, with touches of neoclassical and modern design. Some of these bridges were constructed by the
Works Progress Administration. In 1948, the road was signed as part of
Connecticut Route 15. Originally, the road had the unsigned designation of
Connecticut Route 1A. Also around this time, exit numbers were posted on the road. In December 1949, a connection to the Wilber Cross Parkway was opened to traffic. In 1955, exit 30 (not to be confused with the new exit 30), an at-grade intersection with Butternut Hollow Road that crossed traffic in both directions, was permanently closed. It had already been declared a safety hazard. In 1957, trees inside the median were cut down for the first time, and a median was installed on a treacherous curve that often got slippery when wet. These followed serious accidents caused by tree related crashes. The road was initially maintained by the
Merritt Parkway Commission, though in 1959, this was absorbed into CDOT and renamed the
Merritt Parkway Committee. In the late 1960s, the segment of roadway from Stamford to Greenwich was reconstructed in order to make the roadway straighter. with the new exits opened in 1983. In 2004, a project to rebuild exit 30 from a standard diamond interchange into a
Single-point urban interchange (SPUI) was completed. Also as part of this project, a new overpass was built to replace the old one (it was not wide enough for a SPUI), though this new overpass replicated the aesthetics of the old one. The southern half of the replacement bridge opened in 2003; the old bridge was demolished in 2004. In February 2004, the load unexpectedly shifted on a crane that was removing structural steel from the old bridge. The crane overturned and fell into the partially frozen Housatonic River, killing its operator. The remaining half of the bridge was completed in 2006, two years behind schedule. The new bridge has a concrete deck, with an asphalt surface, three lanes in each direction, full left and right shoulders, a sidewalk for pedestrians,
wrought-iron railing, and aesthetic lighting. The bridge also includes a system of concrete
fenders that protects the bridge piers from ship collisions, a feature that was absent from the original span. Exits were originally numbered sequentially, not mileage-based, like most highways in Connecticut. However, the state is gradually transitioning to milepost-based exit numbers on most of its highways over the next few years. The Merritt Parkway's (and all of Route 15) transition from sequential exit numbers to mileage-based exit numbers was completed in 2025. ==Service plazas==