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T.Y. Lin International Overview

San Francisco, CA
1001 to 5000 employees
Company - Private
Architectural & Engineering Services
$100 to $500 million (USD) per year
T.Y. Lin International (TYLI) is a premier, full-service infrastructure consulting firm, providing leading-edge engineering and architectural services to clients in the aviation, bridge, facilities, ports and marine, rail and transit, and surface transportation markets. TYLI has ... Read more

Company Updates

  • #ThrowbackThursday: T. Y. Lin International provided design, construction engineering and inspection, and structural engineering for Capital Square in Kuala Lumpur, Malaysia. Also called “Cap Square,” the first phase included the iconic 40-story office tower and a 3-level basement parking garage, completed in 1994. Cap Square was designed by visionary American architect, John C. Portman, Jr. 

    T.Y. Lin International Group | Projects | Capital Square

    Capital Square (also called Cap Square) is part of a mammoth, billion dollar development modeled after the concept of a "city within city". The location of the development is on 60,702 square meters of land along on the bank of the Klang River.

  • #DidYouKnow: Chicago is home to 52 movable bridges, including drawbridge-style bascule bridges, many of which are still operational. T.Y. Lin International provided construction engineering for the rehabilitation of the city’s famous Congress Parkway Bridge over the Chicago River, a dual double-leaf, trunnion-type bascule bridge that is one of the busiest crossings in Illinois.

    T.Y. Lin International Group | Projects | Congress Parkway Bridge Rehabilitation

    T.Y. Lin International (TYLI) was selected by the Illinois Department of Transportation (IDOT) to provide Construction Engineering Services for the Congress Parkway Bridge Rehabilitation over the South Branch of the Chicago River in Chicago, Illinois. Services included construction inspection, contract administration, coordination, and materials quality assurance testing.

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T.Y. Lin International – Why Work For Us?

undefinedWhat began in 1954 as a two-person engineering firm has grown into a globally renowned professional services network delivering some of the world's most visionary, challenging and iconic infrastructure projects.

More than half a century later, with 50 offices and thousands of professionals worldwide, our company’s enduring values and commitment to excellence remain steadfast and continue to drive and unite us.

Ever mindful that our work has a significant impact on people's daily lives, as well as on the lives of future generations, we ensure project success and sustainability by strategically mobilizing the collective power and diverse expertise of our global organization; assembling multi-disciplinary teams; leveraging experience and state-of-the-art technical solutions; and sharing knowledge among regions.

This value-driven approach and unwavering commitment to excellence consistently results in award-winning projects, delivered on schedule and within budget, for satisfied clients. We proudly continue to stand as one company, driven by one vision.

undefinedT.Y. Lin International Group offers career growth, excellent compensation, a comprehensive benefits package, and the opportunity to be part of some of the world’s most significant and recognized projects.


We're working on infrastructure projects that have a wide impact around the world: major airport, bridge, roadway, rail, facilities and port projects that garner attention and change lives.


We foster a winning culture of creativity and collaboration among our staff. As a result, we are continually recognized and honored for design innovation and technical excellence by established professional organizations, trade magazines, and clients. Read More


For highly talented college students and recent graduates, there may be no better way to begin a successful career than working for an industry leader known for handling some of the world’s most challenging and exciting infrastructure projects.

We strive to develop our most important asset – our people – by advancing their talent and expertise through project work and continuing education. We have the work and resources to keep staff challenged and moving forward on their career paths.


We offer competitive salaries and a comprehensive benefits package. Our benefits include extensive health, dental, vision, disability and life insurance coverage, continuing education benefits, paid time off, flexible spending accounts, employee assistance program and a 401(k) plan with company matching contributions.



Tung-Yen Lin, known as “T.Y.,” was born on November 14 in Fuzhou, China.


T.Y. Lin joins the faculty at UC Berkeley and he begins his innovative research in pre-stressed concrete that leads to significant advancements and the firm’s early focus.


T.Y. Lin founds T.Y. Lin Associates in Los Angeles, which later became T.Y. Lin International.


T.Y. Lin introduces the concept of constructing a bridge across the Bering Strait, known as the Intercontinental Peace Bridge. Designs the 13-story, 1800 Pacific Building in San Francisco, one of the earliest structures to use post-tensioning to control lift slab deflection.


The firm relocates to San Francisco, increasingly expands its specialty in pre-stressed concrete to broader consulting services with designs that include conventionally reinforced concrete, structural steel, masonry, and timber-framed structures.


T.Y. Lin International completes the design of the Bank of America in Managua, Nicaragua, an 18-story shear wall office building. The reinforced concrete tower was one of two structures left standing after an earthquake shook downtown Managua in 1972.


International growth begins with T.Y. Lin International offices established in Taipei and Singapore.


T.Y. Lin International completes the Rio Higuamo Bridge in the Dominican Republic, the first pre-stressed, concrete segmental long-span bridge constructed in the Western Hemisphere.


Growth increases with new offices in Kuala Lumpur. Merger with Maine-based Hunter-Bellow Associates.


T.Y. Lin International designs the Moscone Convention Center in San Francisco, which uses long-span bridge technology for the 250,000-square-foot, column-free grand exhibit hall.


T.Y. Lin receives the National Medal of Science from President Ronald Reagan.


T.Y. Lin International completes the award-winning design of the Smith Avenue High Bridge in St. Paul, Minnesota. The use of high-strength steel strands in the arch ties is one of the most innovative features of the design.


T.Y. Lin International Group is acquired by DAR Group, an international network of professional service firms, comprised of over 12,000 staff members located in 45 countries around the world.


Period of geographic and service capabilities growth marked by significant acquisitions of California-based McDaniel Engineering, Chicago-based BASCOR, Washington’s DGES Consulting Engineering, and New York’s DRC Consultants.


Following the Loma Prieta earthquake in California, T.Y. Lin International plays a central role in the development of new and advanced techniques; practical engineering tools; and design standards for bridge assessment; seismic retrofit of existing structures; and the design of new bridges.


T.Y. Lin International Group’s presence in Asia Pacific expands with the opening of an office in Chongqing, China.


Dr. Tang becomes Chairman of the Board of T.Y. Lin International.


T.Y. Lin International begins work on the San Francisco-Oakland Bay Bridge. The single-tower, Self-Anchored Suspension (SAS) design is selected for the new Eastern Span of the San Francisco-Oakland Bay Bridge.


Growth continues with acquisitions 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, further bolstering service offerings across multiple lines of business including ITS/traffic engineering, airports, rail and transit, water resources, and more.


T.Y. Lin International begins design of the reconstruction of the Wacker Drive and Congress Parkway interchange for the City of Chicago as well as part of the Wacker Drive Viaduct.


Taiwan High Speed Rail is completed. T.Y. Lin International was responsible for the preliminary and 90% final design of 25 elevated bridges across Taiwan.


T.Y. Lin International serves as the Engineer of Record for McDonald’s in the Southeastern U.S., New York State, and Pennsylvania.


The New Benicia-Martinez Bridge opens to traffic, designed by T.Y. Lin International and constructed using the cast-in-place balanced cantilever method. The largest lightweight concrete segmental bridge in California, the superstructure has spans up to 659 feet long.


T.Y. Lin International completed engineering design and construction phase services for the $360 million South Terminal Expansion Program at Miami International Airport. The firm was also the engineer-of-record for landside roadways adjacent to the South Terminal facility.


T.Y. Lin International was selected to provide ongoing flood insurance studies and flood insurance rate maps in support of FEMA’s Map Modernization Program.


Designed by T.Y. International, the historic Hoover Dam Bypass Bridge opens to traffic.


Construction is completed on the Port Mann Bridge, which was designed by T.Y. Lin International.


California's largest public works project to date, the new San Francisco-Oakland Bay Bridge opens to traffic, with T.Y. Lin International as Engineer of Record.


The Chicago Transit Authority’s reconstructed Dan Ryan Red Line opens to riders. T.Y. Lin International served as Project Design Oversight Lead and Designer of Record on the project.


T.Y. Lin International begins environmental and engineering services for the California High-Speed Rail Bakersfield to Palmdale Section.


T.Y. Lin International acquires South Carolina-based Lindbergh & Associates, strengthening and diversifying its markets across the Southeast United States and building a strong Federal services program.






T.Y. Lin International Reviews

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T.Y. Lin International President & CEO Alvaro J. Piedrahita
Alvaro J. Piedrahita
16 Ratings
  • "Appropriate company to work"

    • Work/Life Balance
    • Culture & Values
    • Career Opportunities
    • Comp & Benefits
    • Senior Management
    Former Employee - GIS in Phoenix, AZ
    Former Employee - GIS in Phoenix, AZ
    Positive Outlook
    Approves of CEO

    I worked at T.Y. Lin International full-time (More than 8 years)


    Very good company. I have worked here 7.5 years


    Work from home opportunities are very less

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T.Y. Lin International Photos

T.Y. Lin International photo of: San Francisco Office Lobby
T.Y. Lin International photo of: San Diego Office Lobby
T.Y. Lin International photo of: San Diego Office Conference Room
T.Y. Lin International photo of: San Diego Office Harbor Drive Pedestrian Bridge Display
T.Y. Lin International photo of: San Diego office receiving a presentation on how to use the new Formlab 3D Printer
T.Y. Lin International photo of: TYLI San Diego Office held their annual Employee Appreciation Breakfast, and per tradition the management staff arrived early to show off their cooking expertise!
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T.Y. Lin International Interviews



Getting an Interview

Getting an Interview





    Accepted Offer
    Positive Experience
    Difficult Interview


    I applied online. I interviewed at T.Y. Lin International.


    The interview process involved meeting several of the staff including management and future colleagues. Standard question were asked regarding design experience, construction experience, university classes taken, software used, etc. Additionally, there were several structural analysis problems made up on the spot. The interview went in depth to test your structural analysis skills to confirm you know the basics and to see how you approach the problem.

    Interview Questions

    • Explain the relationship between stress and strain.   1 Answer
See All 11 Interviews

T.Y. Lin International Awards & Accolades

  • Grand Conceptor Award, American Council of Engineering Companies (ACEC), 2015

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