In Pasadena's early days, before the historic Colorado Street Bridge was built, crossing the Arroyo Seco was an extremely difficult task. Horses and wagons descended the steep eastern slope, crossed the stream over a smaller bridge, and then climbed up the west bank through Eagle Rock Pass.

The bridge was designed and built by the J.A.L. Waddell firm of Kansas City, Missouri and named for Colorado Street (now called Colorado Boulevard,) which was the major east-west thoroughfare through Pasadena. Known for its Beaux Arts arches, ornate lamp posts and railings, initial design proved difficult due to finding solid footing in the Arroyo bed. However, when engineer John Drake Mercereau conceived the idea of curving the bridge, he created a work of art.

The first tragedy on the bridge occurred before construction was even complete. Allegedly, when one of the bridge workers toppled over the side and plunged headfirst into a vat of wet concrete, his co-workers assumed he could not be saved in time and left his body in the quick-drying cement. His is only one of the many souls said to haunt the "Suicide Bridge.”

The first suicide occurred on November 16, 1919 and was followed by a number of others, especially during the Great Depression. Over the years, it is estimated that more than 100 people took their lives leaping the 150 feet into the arroyo below. One of the more notable suicides was when a despondent mother threw her baby girl over the railing on May 1, 1937. She then followed her into the depths of the canyon. Though the mother died, her child miraculously survived. Evidently, her mother had inadvertently tossed her into some nearby trees, and she was later recovered from the thick branches.

By the 1980’s the historic bridge had fallen into great disrepair as chunks of concrete began to fall from its ornate railings and arches. After the Loma Prieta earthquake near Oakland in 1989., the bridge was closed as a precautionary measure. Eventually federal, state and local funds provided some $27 million dollars in renovation costs and the bridge was reopened in 1993, complete with its original detail, plus a suicide prevention rail. Though the number of suicides throughout the years has decreased, the bridge continues to retain its nickname and its ghostly legends.

According to the tales, a number of spirits are said to wander the bridge itself as well as the arroyo below. Others have heard unexplained cries coming from the canyon. One report tells of spectral man that is often seen wandering the bridge who wears wire rimmed glasses. Other people have claimed to see a woman in a long flowing robe, who stands atop one of the parapets, before vanishing as she throws herself off the side.