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How can you incorporate climate change into highway design?

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Climate change poses significant challenges for highway design, as it affects the durability, safety, and functionality of road infrastructure. Extreme weather events, rising temperatures, sea level rise, and changing precipitation patterns can damage pavements, bridges, drainage systems, and other components of highways. To address these challenges, highway designers need to incorporate climate change into their planning, design, and maintenance processes. In this article, we will explore some of the ways you can do that.

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Ayd?n O?uz

Construction Specialist ??? Climate Change | Sustainable Solutions | Quality Management | Construction Management |…
Josi Martins

Procurement | Agronegócio | Strategic Sourcing | Compradora Sênior | Gest?o de Projetos | Commodities
Mohammadreza Ahmadi

Master Degree of Civil Engineer, (PMP)?

1 Assess climate risks

The first step to incorporate climate change into highway design is to assess the current and future climate risks for the project location. This involves collecting and analyzing historical and projected climate data, such as temperature, precipitation, wind, and sea level. You can use tools like the Climate Change Impacts and Risk Analysis (CIRA) or the Climate Resilience Toolkit (CRT) to help you with this task. By assessing the climate risks, you can identify the most vulnerable aspects of your highway design and prioritize the adaptation measures.

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Ayd?n O?uz

Construction Specialist ??? Climate Change | Sustainable Solutions | Quality Management | Construction Management | Strategic Planning | Supply Chain | Stakeholder Coordination
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Our collaborative insights emphasize the multifaceted approach to incorporating climate change into highway design. From dynamic risk assessments and advanced material considerations to climate-responsive geometric design and economic analyses, each facet contributes to a resilient and sustainable infrastructure. By integrating these elements, highway engineers can ensure longevity and adaptability in the face of changing climate conditions, ultimately promoting responsible and forward-thinking highway design practices.

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Josi Martins

Procurement | Agronegócio | Strategic Sourcing | Compradora Sênior | Gest?o de Projetos | Commodities
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Mapeamento e avalia??es dinamicas de risco e considera??es materiais avan?adas até projetos geométricos com análises econ?micas que respondem ao clima, cada análise contribui para uma infraestrutura resiliente e sustentável. Ao integrar esses elementos, os engenheiros de rodovias podem garantir longevidade e adaptabilidade diante das mudan?as climáticas, promovendo práticas responsáveis e com vis?o macro de futuro no projeto de rodovias.

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Lamar Dice

Construction Superintendent
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Some things that have been a problem in past renewable energy products such as disposal of wind turbine blades, if they were shredded and used in road beds. The solids from desalination water plants could be refined and used in conjunction for cement and captured carbon could be blended and used in road beds.

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2 Choose resilient materials

The second step to incorporate climate change into highway design is to choose the materials that can withstand the expected climate conditions. For example, you can use materials that have higher thermal resistance, lower permeability, or higher flexibility to cope with heat, moisture, or deformation. You can also use recycled or renewable materials to reduce the environmental impact of your highway design. Some examples of resilient materials are asphalt rubber, permeable concrete, or bio-based binders.

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Mohammadreza Ahmadi

Master Degree of Civil Engineer, (PMP)?
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Changing the design of the concrete pavement mixture to reduce the amount of water required. Increase the reflectance (albedo) of the road surface e.g. by means of using bright, coloured elements on the road or reflective coatings of road surfaces. Cooling pavements with water.

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Ayd?n O?uz

Construction Specialist ??? Climate Change | Sustainable Solutions | Quality Management | Construction Management | Strategic Planning | Supply Chain | Stakeholder Coordination
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Our collaborative expertise highlights the intricate selection process of resilient materials for climate-responsive highway design. From smart materials with self-healing capabilities to advanced composites like FRPs and the use of recycled and bio-based materials, each choice plays a role in enhancing durability and sustainability. By integrating these resilient materials, highway engineers can fortify infrastructure against climate challenges while contributing to environmentally responsible construction practices.

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3 Design for adaptation

The third step to incorporate climate change into highway design is to design the highway features that can adapt to the changing climate. For example, you can design pavements that can expand and contract with temperature fluctuations, bridges that can resist scouring and flooding, or drainage systems that can handle increased runoff. You can also design the highway alignment, grade, and width to minimize the exposure to hazards, such as landslides, erosion, or storm surge. Some examples of adaptive design are jointed plain concrete pavement (JPCP), integral abutment bridges, or bioswales.

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Ayd?n O?uz

Construction Specialist ??? Climate Change | Sustainable Solutions | Quality Management | Construction Management | Strategic Planning | Supply Chain | Stakeholder Coordination
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Our collaborative insights underscore the intricacies of designing highways for climate adaptation. From CRCP for temperature resilience to smart bridge technologies, bioswales, and geotechnical considerations in alignment design, each element contributes to a robust and adaptive infrastructure. By integrating these features, highway engineers not only fortify roads against climate challenges but also demonstrate a commitment to innovative and sustainable engineering practices, ensuring the longevity and resilience of our transportation networks.

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4 Implement green solutions

The fourth step to incorporate climate change into highway design is to implement green solutions that can enhance the environmental performance and resilience of your highway. For example, you can implement solutions that can reduce greenhouse gas emissions, improve air quality, conserve water, or support biodiversity. You can also implement solutions that can provide co-benefits, such as aesthetic, social, or economic value. Some examples of green solutions are solar panels, vegetated roofs, rain barrels, or wildlife crossings.

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Robert Oyebade

District Department of Transportation
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In my experience, my department has implemented the followings. 1. Green alleys, using permeable pavers. 2. Street tree planting. 3. Construction of bump out bio retention ponds. I agreed with the above information.

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5 Monitor and maintain

The fifth step to incorporate climate change into highway design is to monitor and maintain the highway condition and performance over time. This involves collecting and analyzing data on the pavement condition, bridge condition, traffic flow, or safety indicators. You can use tools like the Highway Performance Monitoring System (HPMS) or the National Bridge Inventory (NBI) to help you with this task. By monitoring and maintaining the highway, you can detect and address any issues or damages caused by climate change and ensure the functionality and reliability of your highway.

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6 Learn and improve

The sixth and final step to incorporate climate change into highway design is to learn from your experience and improve your practices. This involves evaluating the effectiveness and efficiency of your climate adaptation measures, identifying the lessons learned and best practices, and sharing your knowledge and feedback with other highway designers. You can use tools like the Federal Highway Administration (FHWA) Adaptation Framework or the Transportation Research Board (TRB) Climate Change Portal to help you with this task. By learning and improving, you can enhance your skills and contribute to the advancement of highway design in a changing climate.

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7 Here’s what else to consider

This is a space to share examples, stories, or insights that don’t fit into any of the previous sections. What else would you like to add?

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Keith K Kaneko AIA

Permanent Retired Architect, AIA Emeritus
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The entire responsibility, regulation and initiation of highway development, design and construction is in the hands of Federal Highway Administration (FHWA). Climate control cannot be achieved by independent CA Architects

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Chris Parks

Property Manager at Parks and Strong
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If you apply the seven topics that you have already identified to your particular project you should be just fine to go ahead.

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How can you incorporate climate change into highway design?

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3

4

5

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1 Assess climate risks

2 Choose resilient materials

3 Design for adaptation

4 Implement green solutions

5 Monitor and maintain

6 Learn and improve

7 Here’s what else to consider

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