Four-Leaf Clover Highway Interchange Designed In 1931

It’s hard to imagine a point in our nation’s history when people got genuinely excited about newly-introduced highway features. However, in November 1931, the Engineering News-Record reported on the first cloverleaf highway interchange in the U.S. Located in Woodbridge, NJ, the cloverleaf was hailed as ”an outstanding development” in traffic engineering. How influential was its impact? Consider that the recently begun Hoover Dam was relegated to the back pages of that issue!

Today, the cloverleaf is as common as the asphalt roadway itself and they’re typically encountered with much less fanfare and excitement than they were approximately 85 years ago. Yet, cloverleafs possess certain advantages within their design. The first of which is their ability to link ramps safely in order to accommodate left turn situations. This makes them well-suited for the intersection of two freeways. Additionally, their design works well in rural & suburban locations where space is abundant.

The Coalition for Responsible Equitable Economic Development (CREED LA) proudly supports environmentally-responsible construction projects throughout Los Angeles that not only have a positive impact on the local community, but support LA’s working families as well.

CREED LA fights to ensure that developers pay fair wages to all the hard working construction professionals throughout the industry while simultaneously providing them with quality health care, continued training, and trustworthy retirement plans. To learn more about how our non-profit organization supports those building a better, greener world for us all, contact CREED LA at (877) 810-7473.