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Aerial view of illuminated highway with light trails at night, showing a complex interchange.Aerial view of illuminated highway with light trails at night, showing a complex interchange.

Roads Design

Road networks form the backbone of regional mobility and economic growth. CDM Smith delivers roads and highway design solutions that improve safety, enhance capacity and integrate seamlessly with surrounding infrastructure—supporting efficient movement today and long-term resilience. 

Mohamed Fathi

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Mohamed Fathi

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Integrated road and highway engineering 

Aerial view of a complex highway interchange in a desert cityscape.

CDM Smith delivers comprehensive roads and highway engineering services that support safe mobility, efficient network performance and long-term resilience. Our teams design road infrastructure that responds to traffic demand, land-use growth and regulatory requirements—balancing safety, capacity, and constructability. From urban streets and major corridors to complex interchanges and network upgrades, we integrate technical analysis with practical design to deliver solutions that perform in real-world conditions and support sustainable transportation outcomes across the full project lifecycle. 

Urban roads and highway engineering 

We design urban streets, arterial corridors and highways that respond to traffic demands, land-use development and environmental context. Our solutions balance operational efficiency, safety and constructability across diverse project scales. 

Interchanges, intersections, and roads network upgrades 

CDM Smith delivers complex interchange and intersection designs, road widening schemes and corridor upgrades. Our work is informed by detailed traffic analysis to reduce congestion and improve overall network performance. 

Road safety and multimodal integration 

We incorporate road safety audits, pedestrian and cyclist facilities, and public transport considerations into our designs—supporting safer, more inclusive transport systems for all users.

From concept design to construction support 

Our teams support the full project lifecycle—from feasibility study and preliminary design to detailed design, tender documentation and construction-supervision services—ensuring coordination, compliance and buildability. 

Related Practices 

Supporting practices that enhance project outcomes across the lifecycle. 

Bridge Design

Bridge design solutions that enhance connectivity, safety, and resilience across complex transport networks.

Land Development

We partner with our clients to plan and deliver site development projects efficiently and safely, integrating sustainable practices that create lasting value over the full project lifecycle.

Transportation Planning

Our global transportation planning practice is founded on balanced, integrated and forward-thinking mobility solutions. Leading with a data-driven approach, we deliver hundreds of plans to private and public clients.

Hydraulic Modeling and Engineering

Advanced hydraulic modeling and engineering solutions that support resilient, efficient, and data-driven infrastructure design.

Intelligent Transportation Systems

Smart transportation systems that improve mobility, safety, and network performance through real-time data and technology.

Mechanical, Electrical, and Plumbing & Fire Protection (MEP+FP)

We’ve completed hundreds of projects from planning and design to system start-up and commissioning, involving boilers, chillers, heating, ventilation, and air conditioning (HVAC), primary and secondary distribution, substations, power generation, cogeneration and sustainable/renewable energy systems.

Sewerage, Drainage and Irrigation

Integrated sewerage, drainage, and irrigation solutions that support public health, climate resilience, and sustainable urban growth.

Traffic Engineering and Operational Analysis

Traffic engineering and operational analysis solutions that improve safety, efficiency, and performance across transport networks.
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Ready to Take the Next Steps? 

We love collaborating with passionate individuals and organizations. If you're interested in joining our team, check our careers page for open positions or internships.

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