Project Assignment
Principal Bridge Engineer
Years Experience
NRV - 16
Other - 45
Education
B.S./1955/ Architectural Engr, Washington University, St. Louis, Mo.
Bachelor of Architecture/1957/ Washington University, St. Louis, Mo.
MS/1963/ Civil Engineering, CCNY, New York
Registrations
1977/Civil - California ( c27605); 1968/Civil - Washington (c11094);
Also Oregon, Idaho, Maine, Minnesota, Wyoming, Nevada, and Arizona
Professional Experience
Charles Redfield, Consulting Engineer. (1987 to Present)
Founded private practice that offers engineering services for unusual structures, principally
bridges. Many bridge projects are firsts of their kind and represent innovative solutions to
difficult engineering problems.
Designed the Sacramento River Trail Pedestrian Bridge in Redding, California which was the
first stressed ribbon bridge constructed in the United States with the assistance of Dr. Jiri Strasky
of Czechoslavakia. This bridge consisted of a 418 ft single span that was constructed with
minimum disruption to a site with unique natural beauty.
With Robert Valentine designed the Caguanas River Bridge in Puerto Rico, the first curved
incrementally launched bridge in the Western Hemisphere.
Participated with Robert Valentine and Richard Nutt in the contractor redesign of the HOV
Viaducts No. 1 and 2 on I-110 in Los Angeles, California. These 70 ft wide structures, located
in and above the median of one of the most heavily traveled freeways in the US, were designed
to be constructed on falsework trusses using a span by span segmentally prestressed technique
never before used in the United States.
Designed the Bay Farm Island Bicycle Bridge in Alameda, California, a 9-span steel pony truss
structure 750 ft. in length. The central navigation span has a single leaf bascule of 128 ft. that
works in tandem with the neighboring highway bascule bridge. The bridge is presently under
construction.
Also participated in the preliminary and/or final design and/or construction engineering of
several other bridge structures including:
• San Francisco-Oakland Bay Bridge Seismic Safety Project (Prestressed Cantilever
Construction)
• Jamestown Bridge Replacement (Prestressed Cantilever Construction)
• Ohio River Bridge near Maysville (Cable Stayed)
• Benicia-Martinez Bridge (Prestressed Cantilever Const. - Lt. Wt. Conc.)
• 3rd Lake Washington Br. Approaches (Prestressed Cantilever Const.)
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•Bay Farm Island Bicycle Bridge (Steel Pony Truss w/ Bascule Span)
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•
T. Y. Lin International, Inc. (1976 to 1987)
As Principal and Chief Bridge Engineer, Mr. Redfield directed operations of the Bridge
Department. Projects under his direction included bridges of reinforced/prestressed concrete,
segmental prestressed bridges of both cast-in-place and precast construction, and cable stayed
bridges of both composite steel and concrete design. He was lead designer of major balanced
cantilever construction bridges in both the United States and abroad. The following projects are
representative of those under his supervision:
Lewiston-Clarkston Bridge (Prestressed Cantilever Construction)
Dame Point Bridge (Cable Stayed Concrete Deck Alternate))
Wierton-Stubenville Bridge (Cable Stayed Composite Deck)
SR-182 Bridge (Prestressed Cantilever Construction)
Jamestown Bridge (Prestressed Cantilever Construction)
Ruck-a-Chucky Bridge (Curved Cable Stayed)
James River Bridge (Cable Stayed Concrete Deck Segmental)
Sistemas VSL Engenharia Sa (1972 to 1976)
Project Designer for the Napa River Bridge, the first major cast-in-place cantilever bridge constructed
using lightweight concrete.
In-charge of the Technical Design Section of VSL Prestressing for Brazil. Involved in the
design of long span bridges for both the highway and railroad systems in Brazil.
Besides English, Mr. Redfield speaks Spanish, German, Portuguese, and Italian.
