Ralph Modjeski. Ralph Modjeski (born Rudolf Modrzejewski; ; January 27, 1861 – June 26, 1940) was a Polish-American civil engineer who achieved prominence as "America's greatest bridge builder."

He furthered the use of suspension bridges and oversaw the design and construction of nearly forty bridges that spanned the great rivers of North America, as well as the development of new rail lines. In addition, he trained succeeding generations of American bridge designers and builders, including Joseph B. Strauss, chief engineer of San Francisco's Golden Gate Bridge (which was completed six months after Modjeski's San Francisco–Oakland Bay Bridge).

Formative years and family
Modjeski was born in Bochnia, in Galicia, on January 27, 1861, to Gustav Sinnmayer Modrzejewski and actress Helena Opid Modrzejewska (best known outside Poland as Helena Modjeska). In 1865, his mother left Sinnmayer, and in 1868, she married polish nobleman Karol Bożenta Chłapowski. In July 1876, they emigrated to America, where, as a matter of convenience, the boy's mother changed her name to Helena Modjeska and her son's name to Ralph Modjeski.

He was a classmate of Ignacy Jan Paderewski in Poland and was a formidable pianist in his own right.

The son returned to Europe to study at l'Ecole des Ponts et Chaussées (the School of Bridges and Roads) in Paris, France. It was in 1883, while studying at Paris, that he obtained American citizenship; however, he always maintained contact with Poland, wrote much in Polish, and emphasized his Polish origins.

In 1885, he graduated from the School of Bridges and Roads at the top of his class. That same year, he married a cousin Felicie Benda; the couple had three children. They divorced in 1931 after a sixteen-year-long separation. That same year, the now seventy-year-old Modjeski married Virginia Mary Giblyn.

Career
After completing his academic training, Modjeski returned to America to begin his career, working first under the "father of American bridge-building," George S. Morison. In 1893, Modjeski opened his own design office in Chicago. Joined in 1924 by Frank M. Masters Sr., the firm still exists as Modjeski & Masters.

Modjeski's first project as chief engineer was the railroad bridge across the Mississippi River at Rock Island, Illinois. During his career, he served as chief or consulting engineer on dozens of bridges across the United States.

He took over the mis-designed Quebec Bridge after the 1907 disaster that killed seventy-five workers, and succeeded in creating the longest truss span in the world (though a construction accident killed another thirteen workers). It is still the longest cantilever bridge in the world.

Modjeski was the recipient of numerous awards and honorary degrees. He received a doctorate in engineering from Illinois State University in 1911, the Franklin Medal in 1923, a doctorate honoris causa from the Lwów Polytechnic in 1929, and the prestigious John Fritz Medal in 1930. He was elected to the United States National Academy of Sciences in 1925 and the American Philosophical Society in 1926. In Modjeski's obituary, Frank Masters considered him "one of the world's leading bridge engineers." A PHMC Historical Marker was dedicated in 2007 in commemoration.

Death
He died on June 26, 1940, in Los Angeles, California, nearly 80 years old. He was buried at the Ingelwood Eternity Mausoleum Cemetery in the crypt K-208.

Bridges

Chief Engineer
Government Bridge (1896)
Thebes Bridge (1905)
Burlington Northern Railroad Bridge 9.6, Bridge 8.8 and Bridge 5.1 (all 1906–08)
Quebec Bridge (1907-1917)
McKinley Bridge (1910)
Celilo Bridge (1910)
Crooked River Railroad Bridge (1911)
Broadway Bridge (Portland, Oregon)  (1913)
Metropolis Bridge (1914)
Harahan Bridge (1916)
Metropolis Bridge (1917)
Mears Memorial Bridge (1923)
Mid-Hudson Bridge aka Franklin Delano Roosevelt Mid-Hudson Bridge (1930)
Benjamin Franklin Bridge (Philadelphia, Pennsylvania and Camden, New Jersey (1926)
Tacony-Palmyra Bridge (Philadelphia, Pennsylvania and Palmyra, New Jersey) (1929)
Wissahickon Memorial Bridge (Philadelphia, Pennsylvania) (1931)
I-74 Bridge aka the Moline to Bettendorf Veterans Memorial Bridge 1933
Huey P. Long Bridge (1935)
Blue Water Bridge (Port Huron, Michigan and Point Edward, Ontario, 1938)
Consulting Engineer
Manhattan Bridge (1909)
Market Street Bridge (Harrisburg, Pennsylvania) (1926)
Ambassador Bridge (Detroit, Michigan, and Windsor, Ontario, 1929)
George Rogers Clark Memorial Bridge (1929)
McPhaul Suspension Bridge (1929)
San Francisco–Oakland Bay Bridge (1936)

See also
 Belle Silveira
 List of Poles

Further reading

References

External links
 BRIDGING URBAN AMERICA, A STORY OF RALPH MODJESKI, a documentary film
 Ralph Modjeski on the ASCE History and Heritage of Civil Engineering website
 
Cultural Heritage site , includes a brief resume
 
 

1861 births
1940 deaths
People from Bochnia
Emigrants from Austria-Hungary to the United States
Polish engineers
American civil engineers
American bridge engineers
Illinois State University alumni
Howard N. Potts Medal recipients
John Fritz Medal recipients
Members of the American Philosophical Society
Recipients of Franklin Medal