T. Y. Lin International

History

1950s: T.Y. Lin International was founded on June 1, 1954, by Tung-Yen Lin, a Chinese-American structural engineer recognized worldwide as an innovator in bridge design, engineering, and construction. Lin is credited with standardizing the practical use of prestressed concrete. He is also known for his emphasis on the structural aesthetics aspect of engineering, regardless of a project's economic limitations.

1960s1970s: Lin continued to expand his firm's specialty in prestressed concrete to broader consulting services, with projects that included conventionally reinforced concrete, structural steel, masonry, and timber-framed structures. In 1967, he designed the 18-story shear wall Bank of America building in Managua, Nicaragua. The reinforced concrete tower was one of only two structures left standing after the country's 1972 earthquake. Lin also became known for his design innovations, such as the Rio Colorado Bridge, an upside-down suspension bridge spanning a deep gorge in Costa Rica. In the early '70s, the firm also established offices in Taiwan and Singapore.

1980s: T.Y. Lin International expanded with new offices in Kuala Lumpur and a merger with Maine-based Hunter-Bellow Associates in the U.S. In 1986, when U.S. President Ronald Reagan presented Lin with the National Medal of Science, he responded by handing the former president a detailed plan for a 50 mi “Intercontinental Peace Bridge” connecting Alaska and Siberia across the Bering Strait. In 1989, T.Y. Lin International was acquired by the Dar Group, an international network of professional service firms located in 45 countries.

1990s: Following the Loma Prieta earthquake in California in late 1989, T.Y. Lin International helped in the development of advanced techniques, engineering tools, and design standards for bridge assessment, the seismic retrofit of existing structures, and the design of new bridges. The firm also completed several acquisitions, including California-based McDaniel Engineering, Chicago-based BASCOR, Washington State's DGES Consulting Engineering, and New York's DRC Consultants. Additionally, the firm opened a new Asia-Pacific office in Chongqing, China.

2000s: U.S. expansion continued with the acquisition of Miami-based H.J. Ross Associates, Inc., Northern California's CCS Planning and Engineering, multi-location FRA Engineering and Architecture, and Medina Consultants on the East Coast. The acquisitions strengthened the firm's services in the areas of ITS/traffic engineering and transportation engineering through its aviation and rail and transit line of businesses for such projects as Miami International Airport's expansion project. In Asia, T.Y. Lin International oversaw the design of major bridges in China's fast-growing central region, including the Shibanpo Bridge and the Caiyunba Bridge in Chongqing, and the Second Wujiang Bridge in Fulin.

2010s: T.Y. Lin International oversaw the design of 25 elevated bridges across Taiwan for the island's new High Speed Rail system and the Hoover Dam Bypass Bridge, which is downstream of the Hoover Dam; the Port Mann Bridge in British Columbia; Canada (2012); the new Eastern Span of the San Francisco-Oakland Bay Bridge (2013) and the Champlain Bridge, Montreal (2019-present), also called the Samuel De Champlain Bridge, in Montreal, Quebec, Canada.

2020s: In 2023, T.Y. Lin was awarded Lead Designer in a progressive design build (PDB) contract to develop, design, and construct a replacement of two 2-lane bridges over a 10-mile segment of highway between Mobile, Alabama and Spanish Fort, Alabama.

Services

TYLin provides services on all phases of project development and delivery, including:

• Construction Engineering
• Construction Support and Inspection
• Design
• Design-Build
• Intelligent Transportation Systems
• Planning
• Program Management
• Wastewater
• Water Resources

Industries

TYLin provides services within all major sectors of the infrastructure industry, including:

• Airports
• Bridges
• Buildings
• Federal Facilities
• Land Development
• Ports & Marine
• Rail & Transit
• Roadway Systems
• Water Systems

Projects

Select project list:

• Arizona Veterans Memorial ColiseumPhoenix, Arizona
• Arthur Ravenel Jr. BridgeCharleston, South Carolina
• Automated People Mover Guideway, Orlando International AirportOrlando, Florida
• Bataan–Cavite Interlink BridgeManila Bay, Philippines
• Bayshore Bikeway – San Diego, California
• Brookfield Floating Bridge (Sunset Lake Floating Bridge) Brookfield, Vermont
• Caijia BridgeChongqing, China
• Caiyuanba Yangtze River BridgeChongqing, China
• California High-Speed RailCentral Valley Line
• California Incline Bridge and Idaho Avenue Pedestrian Overcrossing Santa Monica, California
• Champlain Bridge, Montreal (2019-present),(Samuel De Champlain Bridge) Montreal, Quebec, Canada
• Cermak-McCormick Place stationChicago, Illinois
• Jamuna Bridge Tangail and Sirajganj, Bangladesh
• Cinta Costera - Panama City, Panama
• Chicago Transit Authority (CTA) Red Line ModernizationChicago, Illinois
• CTA Blue Line Station Improvements – Chicago, Illinois
• Red Line (CTA) and Purple Line (CTA) Modernization – Chicago, Illinois
• Dublin Link – Dublin, Ohio
• Egongyan Rail Transit Bridge – Chongqing, China
• El Dorado International Airport Bogota, Colombia
• Elgin-O’Hare Western Access Project, Illinois Route 390 DuPage and Cook Counties, Illinois
• Eller Drive and Intermodal Container Transfer Facility (ICTF) Overpass - Broward County, Florida
• 4th Bridge over the Panama CanalPanama City, Panama
• I-25/Cerrillos Road Diverging diamond interchangeSanta Fe, New Mexico
• I-395 Miami Corridor Reconstruction – Miami, Florida
• I Street Bridge Replacement – Sacramento, California
• Interstate 10/Jefferson Street Interchange - Indio, California
• Joliet Gateway Center – Joliet, Illinois
• Kenneth F. Burns Memorial Bridge - Lake Quinsigamond, Central Massachusetts
• Los Angeles International Airport, Los Angeles World Airports Utility and Landside Access Modernization Program Enabling Project – Los Angeles, California
• Miami International AirportMiami, Florida
• Mike O'Callaghan – Pat Tillman Memorial Bridge (Hoover Dam Bypass Bridge)Arizona-Nevada
• Navy Pier Flyover Lakefront Trail Improvements – Chicago, Illinois
• Niagara Falls State Park Rehabilitation – Niagara Falls, New York
• Panama Metro Line 1 - Panama City, Panama
• Panama Metro Line 2 - Panama City, Panama
• Port of Miami Tunnel – Miami, Florida
• Port Mann Bridge – Vancouver, BC, Canada
• Puente Centenario - Panama CanalRepublic of Panama
• Rex T. Barber Veterans Memorial BridgeJefferson County, Oregon
• San Francisco–Oakland Bay Bridge New East Span (Bay Bridge)Oakland, California
• Sellwood BridgePortland, Oregon
• Sidney Lanier BridgeBrunswick, Georgia
• Sheikh Jaber Al-Ahmad Al-Sabah Causeway – Kuwait
• South Carolina Aeronautical Training Center for Trident Technical College – N. Charleston, South Carolina
• Taiwan Taoyuan International AirportTaipei, Taiwan
• The EsplanadeTheatres on the BaySingapore
• Tilikum Crossing, Bridge of the PeoplePortland, Oregon
• Tocumen International Airport Expansion Program - Panama City, Panama
• Twin River Bridges – Chongqing, China
• Victoria Theatre and Concert HallSingapore
• Wacker Drive ReconstructionChicago, Illinois
• United States Military Academy West Point, New York

References

References

1. "T.Y. Lin International website".
2. King, John. (18 November 2003). "TUNG-YEN LIN, 1912-2003 / An". San Francisco Chronicle.
3. DeStefano, Jim. (December 2003). "T.Y. Lin (1911-2003)". Structure Magazine.
4. Swent, Eleanor. (2011). "The Father of Prestressed Concrete: Oral history transcript by T.Y. Lin and Eleanor Swent". Biblio Balthazar.
5. "Rio Colorado Bridge". HighestBridges.com.
6. Woo, Elaine. (11 November 2003). "Tung-Yen Lin, 91; Engineer Advocated a Novel Way to Build". Los Angeles Times.
7. Charles Seim. (1994). "Golden Gate Seismic Retrofit Project: A reference for approaching the seismic aspects of the Golden Gate Bridge". Earthquake Engineering: Tenth World Conference.
8. "East Span News". San Francisco-Oakland Bay Bridge East Span Seismic Safety Project.
9. "Airport Master Plan & Capital Improvement Project". Miami International Airport.
10. (September 9, 2014). "International Bridges: Long Standing". Roads & Bridges.
11. Cho, Aileen. (2 October 2006). "China's Great Expansion Fuels Boom in High-Profile Designs". Engineering News-Record.
12. Goodyear, David. (October 2012). "Mike O'Callaghan-Pat Tillman Memorial Bridge". Structure magazine.
13. Fehr, Bradley. (20 February 2010). "New Port Mann Bridge to be widest in Canada". Journal of Commerce.
14. Newcomb, Tim. (28 August 2013). "How They Built the Record-Setting New Bay Bridge Span". Popular Mechanics.
15. "Under construction: Engineering the Bay Bridge". UC Berkeley College of Engineering.
16. (June 2019). "Beauty and Durability Shine with Samuel De Champlain Bridge". Precast Magazine.
17. (2023-09-20). "TYLin News + Views Issue Three 2023 by TYLin - Issuu".
18. (October 22, 2020). "Engineering Design Contract Awarded for ADB-Supported Bataan–Cavite Bridge Project in the Philippines". Asian Development Bank.
19. "Bayshore Bikeway Project Overview".
20. (June 2018). "Construction of the main span s of the Chongqing Caiyuanba Yangtze River Bridge". Arch-Bridges.com.
21. "New Champlain Bridge Corridor Project, Canada". roadtraffic-technology.com.
22. Nader, Marwan. (February 2020). "Accelerated Bridge Construction of the New Samuel De Champlain Bridge". Journal of Bridge Engineering.
23. "CTA Red & Purple Modernization: About the Program".
24. "StackPath".
25. (May 13, 2020). "Pedestrian Bridge Over Scioto River Connects City Life of Dublin, Ohio". Roads & Bridges.
26. "The Dublin Link".
27. (2019-03-26). "Dynamic response analysis of the wind–train–bridge coupling based on the stiffness change of the long-span track bridge". Journal of Low Frequency Noise, Vibration and Active Control.
28. "Port Everglades Expansion Eller Drive Overpass".
29. (29 January 2016). "Tylin International wins tender for construction of the Fourth Bridge". La Estrella de Panama.
30. "Santa Fe DDI".
31. "THE PROJECT - Connecting Miami I-395 / SR 836 / I-95 Design Build".
32. "I Street Bridge Replacement - City of Sacramento".
33. (2020-06-12). "Spring in Sacramento - Bridge Design & Engineering (Bd & e)".
34. (2019-08-09). "Illinois Department of Transportation — The Joliet Gateway Center".
35. "New Kenneth F. Burns Memorial Bridge Project".
36. "LAWA Official Site {{!}} News Release {{!}} May 29, 2020".
37. "T.Y. Lin International Group {{!}} News {{!}} T.Y. Lin International Announces Completion of LAWA Utility and Landside Access Modernization Program Enabling Project at Los Angeles International Airport".
38. (Winter 2011). "Gold Award Winner: Miami International Airport's North Terminal". Owners Perspective Magazine.
39. "Navy Pier Flyover {{!}} Home {{!}} Enhancing Chicago's Lakefront Trail".
40. (March 2020). "Niagara Transformed".
41. (March 7, 2019). "Best Renovation/Restoration: Niagara Falls State Park Rehabilitation". Engineering News-Record.
42. (2019-04-26). "Second metro line opens in Panamá City".
43. "Award of Merit, Rail: Linea 2 Metro Panama".
44. "Port Mann Bridge / Highway 1 Project - Verdict Traffic".
45. "Sellwood Bridge Replacement Project". Multnomah County.
46. "Kuwait's Sheikh Jaber al-Ahmad Al-Sabah Causeway opens".
47. "Sheikh Jaber Al Ahmed Al Sabah Causeway, the world's biggest maritime causeway project".
48. College, Trident Technical. "S.C. Aeronautical Training Center".
49. Wren, David. "SC's new aeronautical center a place to train and inspire".
50. (10 October 2013). "Project Watch - Taiwan Taoyuan International Airport".
51. "Best Project, Airport/Port: Tocumen International Airport Expansion Program".
52. T.Y. Lin International. (April 8, 2014). "Design Concept of the Twin River Bridges in Chongqing".
53. (2011). "Design concept of the Twin River Bridges in Chongqing, China". Frontiers of Architecture and Civil Engineering in China.
54. (2 August 2010). "CITY STREETS: A Second Wind".