• Spanning 125 Years
  • Modjeski and Masters has thrived for 125 years, becoming one of the world's most respected and trusted engineering firms. Look for exciting things throughout 2018 as we celebrate this significant milestone.
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  • Forging Strong Connections
  • New Portageville Bridge provides a more reliable, long-term, and equally iconic structure
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  • Pushing the Limits
  • New ramp from I-95 to J.T. Butler Expressway implements spliced U-girder technology
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About

Modjeski and Masters, an employee-owned company, is one of the world’s leading bridge engineering firms, providing design, analysis, inspection, and rehabilitation services for all types of bridges.

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Projects

From small projects to large, complex engagements; from practical design to innovative, smart infrastructures, you can count us to be agile; to scale our teams and efforts to projects of any size and complexity.

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Services

Modjeski and Masters offers complete life-cycle bridge engineering services across multiple disciplines. We're dedicated to providing comprehensive, industry-leading expertise on all projects.

Services
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01 Insights

Precast Concrete Pier Caps Aid Construction of Flyover Bridge

By using precast concrete pier caps in the design of the Southbound I-95 to Eastbound J.T. Butler Boulevard Flyover Bridge, Modjeski and Masters overcame significant issues during construction. Learn more about how the pier caps were designed not only as an aesthetic component of the bridge, but also an integral part of the collaborative process that made this project a success.

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02 Insights

Innovative Project Delivery Model Ensures Success

Since its construction in 1929, Modjeski and Masters has been deeply involved with the Ambassador Bridge. In the many decades since, through multiple owners and its growth into the busiest international crossing in North America, Modjeski and Masters has worked to keep the bridge maintained, but with an innovative twist to project delivery.

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03 Insights

Rehabilitating the Martin Luther King Bridge

How do you rehab a 65-year-old bridge that serves as a key point of traffic relief and a route directly into downtown St. Louis with limited original structure information? This is a challenge the Illinois Department of Transportation (IDOT) and Modjeski and Masters Inc. faced during a recent project on the Martin Luther King Bridge.

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