
Rudolph Modrzejewska was born in Bochnia, Poland, then known as Galicia, Austrian Empire, on January 27, 1861, to Gustav Sinnmayer Modrzejewski and actress Helena Opid Modrzejewska.
Bochnia, Poland is the home of the Bochnia Salt Mine, one of the oldest salt mines in the world and the oldest one in Europe. The mine was established between the 12th and 13th centuries after salt, then worth as much or more than gold, was discovered. The mine is now open to sightseers. But I digress...
In 1865, Helena Opid left Gustav Sinnmayer, and in 1868 she married "Count" Bozenty Chlapowski. In July 1876, they emigrated to America, where, as a matter of convenience, the boy's mother altered her name to Helena Modjeska and her son's name to
Ralph Modjeski.
Everyone in the United States has seen at least pictures of Ralph Modjeski's work and many of them have actually stood on or ridden across them. Name not ringing a bell yet?
In 1893, in Chicago, Modjeski opened his design office, which still exists as "
Modjeski & Masters," after it was joined in 1924 by Frank M. Masters.
Modjeski's first project as chief engineer was a railroad bridge called Government Bridge (1896), across the Mississippi River at Rock Island, Illinois. This bridge was built by the Phoenix Bridge Company of Phoenixville, PA.
He was the Chief Engineer of the following:
Thebes Railroad Bridge, across the Mississipi River - (1905)
McKinley Bridge, Saint Louis, MO - (1910)
Broadway Railroad Bridge, Portland, OR, across the Willamette River - (1913)
Harahan Railroad Bridge, across the Mississipi River - (1916)
Metropolis Bridge, built for the Chicago, Burlington and Quincy Railroad, crosses the Ohio River - (1917)
Mears Memorial Bridge, Alaska - (1923)
Mid-Hudson Bridge aka Franklin Delano Roosevelt Mid-Hudson Bridge (1930)

Benjamin Franklin Bridge, Philadelphia, Pennsylvania and Camden, New Jersey - (1926)
(Photo source)

Tacony-Palmyra Bridge, Philadelphia, Pennsylvania and Palmyra, New Jersey - (1929)
(Photo source) Huey P. Long Bridge, New Orleans, Louisiana - (1935)
San Francisco – Oakland Bay Bridge - (1936)
Blue Water Bridge, Port Huron, Michigan and Point Edward, Ontario - (1938)
...and Consulting Engineer on:
Manhattan Bridge - (1909)
Market Street Bridge, Harrisburg - (1926)
Ambassador Bridge, Detroit, Michigan, and Windsor, Ontario - (1929)
One of his protégés,
Joseph B. Strauss, was the designer of
San Francisco's Golden Gate Bridge.
Modjeski & Masters was responsible for designing many of the bridges for the Pennsylvania Turnpike. The firm has over a dozen large bridge projects underway today.
Ralph died June 26, 1940, in Los Angeles, California.