Sun Yat-Sen Freeway Widening Project
Taipei, Taiwan
Client:
Taiwan Area National Freeway Bureau
Date:
Design completed 1991
Construction completed 1995
Scope of work:
Design
Construction cost:
US$ 1.6 Billion
Services Performed:
- Conceptual design and type selection
- Final design
- Engineering support during construction
Issues:
- Extensive coordination and communication interface with 7 production offices involved in the design effort, with various government agencies, and with multiple subconsultants
- Segmental bridge
- Strong management, scheduling, and budget control to meet the aggressive, fast-track design schedule
- Design for high seismic zone


The capacity of the Sun Yat-Sen Freeway, a major transportation link of the Greater Taipei Metropolitan area, required doubling within the existing right-of-way and without significant disruption of traffic during construction. The design solution specifies a pair of twin 22 km long elevated structures with interchanges to segregate local traffic on the existing surface roadway and through traffic on the new grade-separation. Each of the 22 km long structures carries two or three lanes of traffic over or alongside the existing freeway. The project contains a wide variety of bridge and elevated highway structures, including 5.2 km of cast-in-place concrete box girders of spans up to 180 m constructed using the segmental cantilever method. T.Y. Lin International (TYLI) was the prime consultant.
- Kwong Cheng, current OPAC Principal, served as Project Manager while at TYLI and directed a team of over 150 engineers and technicians to perform preliminary and final design of this project.
- Mark Ketchum, current OPAC Principal, served as Supervising Engineer while at TYLI and provided guidance for the design and analysis of 5.2 km of cast-in-place box girder bridge structures.

