A century ago the only way to drive between New York and Boston was on Route 1, the Post Road. If you think traffic is bad today, imagine that journey!So in 1936, 2,000 men began work on the state\u2019s largest public works project, the $21-million four-lane parkway starting in Greenwich and running to the Housatonic River in Stratford. The adjoining Wilbur Cross Parkway didn\u2019t open until years later when the Sikorsky Bridge across the Housatonic was completed.The Merritt, named after Stamford resident Congressman Schuyler Merritt, is best known for its natural beauty, though most of it was planted: 22,000 trees and 40,000 shrubs. And then there are the bridges, since 1991 protected on the National Register of Historic Places.Architect George Dunkleberger designed 69 bridges in a variety of architectural styles, from art moderne to deco to rustic. No two bridges are exactly alike. In short order the Merritt was being hailed as \u201cThe Queen of Parkways.\u201dThe parkway at first had tolls, a dime (later 35 cents) at each of three barriers, not to pay for the parkway\u2019s upkeep but to finance its extension to Hartford via the Wilbur Cross Parkway, named after Wilbur Lucius Cross, who was governor in the 1930s.Tolls were dropped in 1988. The old toll booths themselves were as unique as the parkway, constructed of wooden beams and covered in shingles. One of the original booths is now preserved in Stratford at the Boothe Memorial Park.At recent celebrations of the parkway\u2019s 75th birthday, one old-timer told of a friend from Yale who resented paying the dime toll in the 1940s. So he went to the medical school and procured a cadaver arm, glued a dime on its finger and hid the arm up his sleeve.When the prankster slowed to pay his toll, the collector got the dime and the arm as the student sped off.The Merritt\u2019s right of way is a half-mile wide, the vistas more obvious now since the massive tree clearing after the two storms in 2011 and 2012 where downed trees pretty much closed the highway.Since its design and opening in 1938, the Merritt Parkway has been off-limits to commercial vehicles and trucks. But as traffic worsens on I-95, debates rage from time to time about allowing trucks on the Merritt and possibly widening the road. Either move would probably mean demolition of the parkway\u2019s historic bridges, so don\u2019t expect such expansion anytime soon.The best watchdog of the parkway is the Merritt Parkway Conservancy, which has fought to preserve the road\u2019s unique character. Its latest battle is against plans for a multi-use trail along the south side of the roadway. Costing an estimated $6.6 million per mile, the conservancy worries that the trees and foliage that would be clear-cut to allow bike and pedestrian users would despoil the eco-system.Jim Cameron is founder of The Commuter Action Group, and a member of the Darien RTM. The opinions expressed in this column are only his own. You may reach him at CommuterActionGroup@gmail.com. For a full collection of \u201cTalking Transportation\u201d columns, see talkingtransportation.blogspot.com.