Transportation Structural Engineering

Structures designed by JMT for transportation projects serve as some of the most visible examples of our engineering capabilities. The firm's transportation structural expertise encompasses bridges, retaining walls, culverts, and noise barriers. We provide design and construction phase services toward the completion of new and rehabilitated structures, as well as inspection services on an individual or program basis.

Our extensive design and inspection experience includes:

  • Bridges over water, highways and railroads constructed of steel, reinforced concrete, prestressed concrete and timber
  • Pedestrian bridges using steel, prestressed concrete and timber
  • Culverts using precast concrete, prestressed concrete and corrugated metal
  • Retaining walls including cantilever, counterfort, gravity, mechanically stabilized earth, tied back, and post and panel
  • Noise barriers, including ground and structure supported
  • Sign structures including bridge, cantilever, butterfly and structure mounted
  • High mast light poles

New Design

JMT has set a standard of excellence in structural engineering that has helped us earn many awards for our designs of new and replacement structures. These designs have included vehicular and pedestrian bridges as well as other transportation-related structures. JMT provides, as needed, construction support services, such as shop drawing review and approval.

We give special attention to bridges over highways, waterways and rail lines as we consider issues related to the environment, aesthetics and constructability to be important components of the design process. JMT's structural engineers are well versed in all design methodologies including Load and Resistance Factor Design (LRFD).

Remedial Design

JMT's extensive design history involves the repair and reconstruction of structures as part of routine maintenance or due to an emergency situation. Development of repairs for routine maintenance and rehabilitation extend the service life of structures for our clients.

Our engineers are available to respond to emergency situations to assess initial damage, provide recommendations related to public safety and provide the required design services. Our experience allows us to develop quick cost effective solutions to minimize the inconvenience and safety hazard posed to the traveling public.


MD 195 Bridge Over Sligo Creek

Sligo Bridge 1 M

Takoma Park, Maryland

JMT designed the reconstruction of a concrete arch bridge located in an urban setting along a state highway.

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Cypress Gardens Road Bridge Emergency Replacement


Berkeley County, South Carolina

JMT served as Design-Build engineer-of-record for the emergency replacement of a damaged bridge.

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SR 288 Bridge Accelerated Construction

SR 288-4M

Lawrence County, Pennsylvania

JMT applied accelerated bridge construction techniques to design a bridge that was constructed and opened to the public in seven days.

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John F. Kennedy (JFK) Memorial Bridge Rehabilitation

aerial jfk bridge1 M

Atlantic County, New Jersey

JMT provided design and construction management/inspection services for the rehabilitation of a major bridge while keeping it in service.

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New Croton Dam Underwater Inspection


Westchester County, New York

Atlantic Engineering, A JMT Company, performed the underwater inspection of the New Croton Dam.

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Francis Scott Key Bridge Rehabilitation over the Potomac River


Washington, D.C.

JMT performed field inspection, concrete and steel testing, and evaluation for a historic bridge.

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Cherry Tree Lane Spillway 1 S

Cherry Tree Lane Spillway Replacement

JMT led the engineering design for the replacement of a deteriorating spillway.

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CR 518 Bridge Facade S

Bridge Replacement - County Route 518 Over the Delaware & Raritan Canal

JMT designed a replacement for a severely deteriorated bridge in the Garden State.

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