Woodbridge Cloverleaf

Woodbridge, New Jersey

The cloverleaf interchange, today widely employed by highway engineers to enable traffic to flow safely through an intersection at high speed, is a pure product of the automobile age. Patented by a Maryland engineer in 1916, the first one is believed to have been built in Buenos Aires.

The first cloverleaf in America was built in Woodbridge, New Jersey in 1929, linking what are today known as U.S. Routes 1 and 9 and N.J. Route 35. As traffic volumes increased in the succeeding three-quarters of a century, the original design became obsolete, requiring a new, larger interchange at the same location.

Prior to the demolition of the original cloverleaf, Hunter Research researched and oversaw the production of a half-hour video documenting this prototypical icon of the American road. The video shows how the cloverleaf concept evolved from earlier interchanges, illustrates the Woodbridge cloverleaf in detail using animations based on the original construction drawings, and features archival aerial footage shot shortly after it opened to traffic. A highlight is an interview with the daughter of Edward Delano, designer of this cloverleaf, who vividly recalled its construction.

Client:  New Jersey Department of Transportation 

Subconsultant:  Sica Productions