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Highway Design

Highway Design

Smart Highway Solutions for Connected Communities

Forward-thinking strategies to design, upgrade, and future-proof your roads

Highways are more than pavement and paint – they’re the arteries that keep communities moving. But as travel demands evolve, so must the roads that support them. That’s where SEH comes in. We help transportation agencies, municipalities, and DOTs plan, design, and modernize highways, interchanges, and intersections that improve safety, reduce congestion, and prepare for the future of mobility.

By combining traffic analysis, safety audits, geometric design, and multimodal planning, our team delivers durable, future-ready transportation solutions. We also help manage funding, permitting, and public engagement so projects advance smoothly and efficiently.

Let’s build the next generation of highways: smarter, safer, and ready for what’s next.

SEH’s interchange portfolio spans the full spectrum of complexity, from traditional Trunk Highway and Interstate designs to intricate, multi-level system-to-system interchanges. Our team has delivered advanced configurations including Diverging Diamond (DDI), Single Point Urban (SPUI), and Offset SPUI solutions for local agencies and multiple state DOTs, navigating high-traffic corridors where precision, safety, and operational performance are critical.

Highway Design Services

Interstates and Highways That Drive Progress

Designing efficient, resilient corridors that move people, goods, and communities forward

Your highways are more than roads, they’re lifelines for communities, commerce, and growth. We help you add capacity to existing corridors, improve aging roadways and bridges, and plan new routes that meet future demand.

With nationwide experience, we bring fresh thinking and proven approaches to every project, integrating sustainability through stormwater management, floodplain mitigation, and thoughtful, future-ready planning.

Every project is unique, so we adapt to your preferred level of involvement – keeping the process clear, manageable, and aligned with your community’s goals.

Interstates and Highways Solutions

  • Conceptual, preliminary, and final design
  • Capacity improvements
  • Highway rehabilitation and upgrades
  • New interstate and highway alignments
  • Sustainable design practices
  • Advanced CAD design for efficiency

Interchange Design That Keeps Growth Moving

Connecting people and places with innovative interchange solutions

Interchanges shape how communities grow, connect, and thrive. We help you design new interchanges or upgrade existing ones to handle higher demand safely and efficiently, keeping your residents, businesses, and travelers moving.

Our team combines nationwide expertise with local insight to enhance mobility and safety for the people who use our infrastructure every day, while integrating stormwater management and environmental solutions for long-lasting, resilient results. We guide communities through complex projects, helping you stay on schedule, on budget, and minimize disruption while creating interchanges that serve people today and for years to come.

New interchange design

  • Interchange upgrades and expansions
  • Safety and capacity analysis
  • Integration with local road networks
  • Sustainable stormwater and environmental solutions

Intersection Design Solving Congestion and Safety Challenges

Safer, smarter intersections for every community

Intersections are the points where daily life happens – where people walk to school, cyclists commute, and drivers navigate busy streets. Our intersection designs make these spaces safer, more efficient, and easier for everyone to use.

We tackle outdated layouts, congestion, and safety risks with practical, creative solutions tailored to your streets. From signal timing and lane configuration to roundabouts and pedestrian improvements, every design balances safety, accessibility, and smooth traffic flow

Intersection Design Solutions

  • Intersection geometry and layout
  • Roundabout and signalized intersection design
  • Safety enhancements (crosswalks, signage, lighting)
  • Accessibility improvements
  • Traffic calming and multimodal features

Roadside Safety Reducing Hazards and Risks

Protecting travelers with advanced, sustainable solutions

Roadside safety is essential for keeping your highways and roads reliable for everyone. We help you minimize hazards by integrating guardrails, barriers, and other safety features designed to protect all road users.

By prioritizing roadside safety, we help reduce hazards, improve long-term protection, and create highways that are safe for everyone. Our flexible, people-first approach means we’re ready to support your goals, no matter the challenge.

Roadside Safety Solutions

  • Guardrail and barrier design
  • Roadside hazard analysis
  • Crash mitigation strategies
  • Sustainable materials and practices
  • Stormwater and floodplain protection

Future Project Need? Contact Us!

To speak with a member of our team or learn more about our services, please fill out the contact form.

 

Highway Design

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