Construction Materials Testing

  • Peter Corley joins TTL Transportation Business Unit

    TTL is pleased to introduce Peter Corley, E.I.T. as a Staff Professional in the Transportation Business Unit. Corley brings over eight years of technical expertise in construction, operations, and logistics during his service in the United States Army. Mr. Corley obtained his bachelor’s degree in civil engineering from the United States Military Academy in West Point, New York and a master’s degree in geological engineering from Missouri University of Science and Technology in Rolla, Missouri. He is an Engineer In Training and a Six Sigma Green Belt.

    We thank Pete for his service to our country and welcome him to TTL.

    TTL, Inc. is an engineering consulting firm that has been serving clients nationwide for more than 50 years. Visit for more information.


  • TTL and Walker Associates merge

    TTL is pleased to announce its merger with Walker Associates in Tuscaloosa, AL. Walker Associates, Inc. is a civil engineering, surveying, planning and geographic information systems (GIS) consulting firm. The addition of Walker Associates will expand TTL’s client service lines of geotechnical engineering, analytical lab analysis, construction materials testing and environmental consulting to now include civil design.

    “Walker Associates is proud and excited to join the TTL team that we have had the privilege to work with throughout our careers,” said Jason Walker, president of Walker Associates. “We are confident we will be able to jointly serve our communities and clients even more effectively with complemented areas of practice and the shared company goals of serving with professionalism, creativity and responsiveness.”

    “I am excited about the opportunities the merger with Walker Associates brings to our clients,” said Dean McClure, president of TTL. “The complementing services and culture will make for a successful team to meet the needs of our clients.”

    For more information about Walker Associates, visit

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