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The Infrastructure Working Group formed in 2020 to address technical issues that the engineering community faces in designing, operating and maintaining Wisconsin’s infrastructure and future considerations for the construction sectors.
The Infrastructure Working Group is made up of individuals interested in accelerating adaptation and mitigation solutions among Wisconsin’s infrastructure managers and designers. The working group’s leadership expertise is primarily in water resources (hydrology, hydraulics, and stormwater) but membership expertise extends into transportation and construction materials. We are open to any professional seeking to learn more about climate change impacts on the design, operation, management, and financing of Wisconsin’s infrastructure. Members support developing and communicating solutions within their networks. The working group seeks to engage professionals representing all parts of Wisconsin.
Activities and work products since the 2021 WICCI Assessment Report include:
- Wisconsin Rainfall Project: updated rainfall statistics for Wisconsin using the latest techniques for both current and projected future conditions.
- Impacts of Future Precipitation Projections on Urban Drainage Infrastructure
- Flood-Resilient Road Stream Crossings
Our future action plan includes:
- Host the Climate Resiliency Seminar Series, a joint effort among WICCI Infrastructure Working Group, UW–Platteville, and the UW–Madison Nelson Institute for Environmental Studies.
- Continue to disseminate and communicate work products to designers statewide.
- Develop and communicate updated recommendations for rainfall/runoff analysis to define climate and watershed land-use conditions that should be evaluated in existing conditions and using future flooding calculation.
- Develop guidance for modeling standards for storm recurrence intervals and rainfall distributions appropriate for future precipitation conditions.
- Share findings and connect stakeholders to resources on low-embodied-carbon transportation and building materials and use of environmental product declarations.
Summary of Issues and Impacts

Infrastructure is the backbone of any modern society. Infrastructure includes roads, rails, and ports — a system of facilities to facilitate the movement of goods and people. Included in infrastructure is water treatment, wastewater, and stormwater systems.
Public infrastructure managers face many challenges in maintaining the infrastructure system in Wisconsin. Aging infrastructure tops the list in a survey conducted in 2020 of public infrastructure managers, elected officials, planners, and infrastructure consultants.
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Replacing infrastructure is a high-cost investment that officials must balance among other needs in a community. Infrastructure managers, planners, elected officials, and infrastructure consultants in Wisconsin are also concerned about pavement deterioration, an issue also for users as roads will impact travel speed and wear on tires.
Inadequate capital funding and insufficient revenues from taxpayers to cover operations and maintenance costs are common concerns among municipalities, which can further impact when to replace aging infrastructure.
The combination of these concerns hints that our current funding system is not working. We need to design a more sustainable funding stream to address aging infrastructure and pavement deterioration, as well as other infrastructure problems. To complicate matters, the uncertainty of the frequency of future climate impacts and how to design future infrastructure concerns design engineers.
Learn about the impacts to different types of infrastructure resulting from more frequent, intense rainfall.
Airports
- Pavement deterioration.
Bridges, Culverts and Dams (Hydraulic Structures)
- Roadway culvert and bridge failure due to overtopping flow.
- Bridge structure and footings failure due to increased discharge.
- Embankment and retaining wall failure due to overtopping in floods.
- Dam spillway failure due to inadequate capacity.
- Continued and exacerbated disconnection of stream segments due to covert capacity and invert alignment.
Drainage Systems
- Inaccurate and underestimated hydrologic design of stormwater management and river crossing structures.
- Exacerbated urban flooding in both storm drainage and urban watercourses.
- Underestimation of floodplain storage benefits, water velocities and public safety risk.
Runoff Quality
- More precipitation, especially more early and late-season precipitation will produce higher rural and urban sediment and water quality runoff loading.
- Higher runoff volume rates will reduce performance of urban stormwater management systems including infiltration basins and water quality treatment ponds.
Roads and Rails
- Road and rail washouts.
- Rockslides.
- Damage to road right-of-way that undermines roadbeds.
- Potholes.
Sanitary Sewer Systems and Wastewater Treatment Facilities
- Possible increased groundwater elevations producing more sanitary sewer infiltration driven by larger precipitation depths and more fall and early spring recharge.
- Increased surface water runoff flooding producing increased inflow into sanitary sewers leading to more sanitary sewer overflows.
Learn about the impacts to different types of infrastructure resulting from higher temperatures in general, and more intense and longer duration summertime heat waves.
Airports
- Economic impact due to less revenue or high development costs.
- At higher temperatures, airplanes need longer runways to be able to take off. If runways are too short, airplanes have to restrict the weight onboard (remove passengers and cargo). If airports have land, runways will need to be extended. Runway extensions will extend the noise impacts to new surrounding areas, commercial or residential.
Roads
- Pavement buckling results in unsafe infrastructure.
- Detours/congestion impact workers and traveler trips.
- Congestion and detours for freight trucks ultimately lead to higher costs for the consumer.
- Congestion impacts air quality.
Bus Stops, Transit Stops
- Hotter days will require different types of materials that do not contribute to the urban heat island.
Wastewater Treatment Facilities
- Increased temperatures could affect water treatment chemistry or biology.
- Increased cooling load to all infrastructure operation, maintenance, and administration operations.
Learn about the impacts to different types of infrastructure resulting from potentially higher lake levels.
Ports, Harbors, and Marinas
- Potential damage to roads and rails connecting ports for “last mile.”
- Damage to commercial ports.
- Higher insurance claims for port tenants may mean a change to trucking instead of water movements which would bring higher costs to consumers.
- At higher lake levels freighters can accommodate higher tonnage. Typical commodities are too heavy to transport by truck.
- At lower lake levels, freighters and barges are limited in the amount of tonnage they can carry, resulting in economic loss.
Learn about the impacts to different types of infrastructure resulting from higher precipitation and decreased frozen ground conditions, which produce increased groundwater recharge and a higher water table.
Groundwater
- Increased groundwater-driven flooding such as has occurred at Spring Green and in Waukesha County.
- Increased duration of saturated conditions adjacent to structure foundations.
- Increased infiltration into piped infrastructure such as sewers.
Recommended Solutions/Strategies

A vulnerability assessment is a first step in determining the climate risks for any type of infrastructure. The following strategies could be part of an infrastructure manager’s roadmap for adapting to climate change or mitigating greenhouse gasses. Strategies could also provide community co-benefits ranging from improvements in air quality, use of trees for shading, or improvements in noise levels. A second strategy is to develop scenarios that reflect three climate scenarios.
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- Wisconsin Rainfall Project: updated rainfall statistics for Wisconsin using the latest techniques for both current and projected future conditions
- Impacts of Future Precipitation Projections on Urban Drainage Infrastructure
- Flood-Resilient Road Stream Crossings
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Ports Manager
- Conduct vulnerability analysis of shoreline protection systems impacted by fluctuations in lake stage.
- Evaluate the vulnerability of existing port and harbor structures such as breakwaters and harbor walls.
- Elevate and reinforce transportation connections to critical infrastructure.
- Relocate or consolidate port functions.
- lnstall systems to adapt to current high lake levels and consider potential future lake level variability.
- Build adaptive facilities using waterproof materials in the interiors.
- Select tenants with environmental, social and governance goals.
- Identify options for and support adaptive recreational facilities such as floating dockage structures and modified boat launch ramps.
- Create a redundant system for industries by building sustainable rail connections.
- Implement marine highways for Interstate 94.
- Electrify and convert to solar for sustainable energy; use cool roofs.
Roads Manager
- Pursue funding for elevating road and rail infrastructure.
- Update asset management models to include climate factors.
- Use sensors to monitor conditions and self-diagnose issues and use “smart structures” for higher cost-effectiveness.
- Pilot and transition to fossil free materials.
- Use hyper-performance materials.
- Use construction robots for pothole patching, joint repairs, crack detection, and sealing, and asset inspections.
- Partner with the private sector to establish electric-only bids for freight movement for long-haul and short-haul goods movement.
Bridge/Culvert/Dam Manager
- Use updated rainfall data in hydrologic and hydraulic design.
- Evaluate and communicate methods for predicting future probability of annual peak discharge utilizing updated rainfall data.
- Inventory and prioritize stream crossing structures that are vulnerable to failure.
- Develop and promote a flooding risk-based approach (instead of a predefined “design storm” requirement) for drainage structure capacity analysis for urban drainage bridges and reservoirs.
- Use adaptive design approaches that allow for future modifications to be planned for in advance as a way to address climate change effects.
- Revise state and municipal design standards in administrative code and guidance documents to require updated design procedures for bridges, dams, drainage system structures as described above.
- Promote the use of sensors to monitor conditions and self-diagnose issues.
- Provide updated guidance on structure inventory, critical ecological/hydrologic/hydraulic design issues and the latest data on precipitation in hydrologic modeling approaches.
- Communicate the benefits of culvert (and bridge) design using a stream simulation design process.
- Provide guidance to use stream simulation design as well as other design approaches for stream crossing culverts, especially in rural areas, to assess vulnerability and produce more flood resilient designs that also protect aquatic communities.
- Communicate examples of culvert structures that have survived extreme floods to provide lessons learned and encourage municipalities and designers to design for flood resilience when possible.
Construction Manager
- Conduct research and consolidate existing data to identify top construction material and construction process greenhouse gas emission issues in Wisconsin.
- Develop a metric for identifying embedded carbon content that can be applied to many materials, similar to an “Energy Star” designation.
- Develop and adopt specification and bidding procedures that value reduced carbon content materials.
- Provide contract flexibility for loss of working days due to extended rainfall or other climatic effects and also incentivize contractors to partner with the owner in planning to address climatic extremes that may be encountered during a particular contract performance timeframe.
Water Resources Program Manager
- Assess programs to assess the potential for groundwater rise in areas of critical infrastructure.
- Assess community-wide impacts of structure flooding in areas determined to be vulnerable.
- Develop infrastructure facility master plans to include evaluation of climate change changes in saturated ground duration and elevation.
- Modify modeling guidance for urban and rural runoff quality modeling approaches to account for potential higher loading rates.
- Evaluate the vulnerability of existing stormwater quality infrastructure to increased runoff volume and nutrient/sediment loadings.
- Develop updated approaches to floodplain definition that combine FEMA standards for flood insurance and provide more comprehensive information for planning and floodplain land use limitations.
- Provide guidance for and require that urban drainage master plans include a climate change vulnerability analysis, specifically evaluate distributed green infrastructure, and provide some type of incentive funding for these evaluations.
- Provide technical and procedural guidance regarding the use of natural systems such as floodplain storage and wetland restoration as part of watershed quality management in rural areas and provide some type of incentive funding for these evaluations.
Sanitary Sewer Systems and Wastewater Treatment Facilities Managers
- Conduct vulnerability analysis of systems and treatment facilities to increased precipitation, street flooding, and groundwater elevations.
- Replace and repair leaking infrastructure.
- Consider increased infiltration and inflow when designing wastewater treatment facilities.
- Consider increased potential for infiltration and groundwater elevations in private septic system design.
- Raise outfall structures and wastewater treatment facilities where there is risk of backflow to the wastewater treatment facility during flood events.
- Upgrade equipment and facilities to reduce energy use.
- Change operations to improve plant efficiency.
- Promote more efficient utility customer energy use: for example, requiring or subsidizing more efficient water heating.
- Require long-term cost/benefit analysis of natural systems and green infrastructure as part of new infrastructure projects.
- Evaluate specific climate-related increased temperatures in all infrastructure operation equipment and facilities planning, especially public potable water supplies.
- Develop updated rainfall statistics for Wisconsin using latest techniques for both current and projected future conditions.
- Communicate new rainfall data to designers statewide.
- Develop and communicate updated recommendations for rainfall/runoff analysis to define climate and watershed land-use conditions that should be evaluated in existing conditions and future flooding calculation.
- Develop guidance from modeling standards for storm recurrence intervals and rainfall distributions appropriate for future precipitation conditions.
Recommended Solutions

Many strategies are often operational solutions, meaning “doing more of something:” for example, filling more potholes. A true solution however would be aimed at the reason why potholes form in the first place.
Explore Options for Less Expensive Roads
Explore options, such as pavements and smart concrete that may make roads less expensive to maintain.
Consider the Carbon Footprint
Explore options for measuring the carbon footprint of construction projects, beginning with mining of raw materials, and including transportation and installation. This is a first step in mitigating or reducing carbon emissions in Wisconsin.
Plan for the Long Term
For example, an operational solution around heat affecting airplane takeoff may be to change the timing of flights to cooler times of the day. A longer-term solution would be to redesign the aircraft using lighter materials that resist hotter temperatures.
Explore Infrastructure that Mitigates Climate Change
Many technologies (pdf) are being developed to mitigate climate change, some that could be incorporated into the infrastructure where the infrastructure itself captures or regenerates energy or carbon. One early-stage technology is using wireless to regenerate electric bus batteries so that there is no downtime for charging the fleet.
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Policy Recommendations
Create a Wisconsin Green Compact
Support the creation of a Wisconsin Green Compact for municipalities to accelerate adaptation and climate mitigation. The compact would ensure alignment with state, regional and national goals and provide a way to measure our collective impact. A compact would also be a good step in creating regional climate action and climate resilience plans.
Pursue Climate Bonds
Pursue climate bonds to accelerate green actions.
Build Financial Capacity
Build capacity for climate financing solutions in the transportation infrastructure sector.
Investigate Low-Carbon Transportation Alternatives
Investigate an integrated model such as the Transportation and Climate Initiative (including 12 Northeast and Mid-Atlantic states), a regional low-carbon transportation program to reduce climate-changing emissions and invest in cleaner transportation, healthier communities, and more resilient infrastructure.
Other Considerations
Besides technology solutions waiting to make it to market, there is other information infrastructure managers need to understand about the risks, return of investment and the opportunities of making infrastructure more resilient to the impact of climate change in Wisconsin and accelerating decarbonization.
The Business Case for Adapting Our Infrastructure
In response to the Infrastructure Working Group survey of infrastructure managers in Wisconsin, 49 percent of respondents said that adapting to climate change is too expensive. Yet, 23 years of data from the Federal Emergency Management Agency shows that there is at least a $4 return on every dollar invested in adaptation. If adaptation involves changes in administrative codes, such as building codes, subdivision ordinances, construction standards, and building design standards, the return can be as high as $7. It is clear that well-planned adaptation can save money. Adaptation returns $4 for every $1 invested
Assessing Community Resilience
What if there is major flooding in your community? You may know how many people may be impacted by the event. But do you know how resilient your community is, or how long will it take for people to recover from the event? These are questions that researchers are asking. In 2020 the U.S. Census produced its Community Resilience Estimates Dashboard that identified risk factors. The dashboard shows that, on average, a quarter of Wisconsin’s population have three or more risk factors, making these individuals more likely to have a hard time recovering from a disaster. Furthermore, 50 percent of Wisconsin’s residents have one or two of these risk factors.
Climigration
Climigration is a term for the planned relocation of communities in response to the impacts of climate change. The Midwest is positioning itself as a destination place for people displaced by environmental disaster. Municipalities are already considering how their current infrastructure can handle a potential influx of new residents. Climigration can be considered an opportunity for municipalities as people may flee from rising sea levels from the U.S. coasts, wildfires and poor air quality in the West, and extreme heat from many parts of the country.
Planning of Adaptation Projects
The planning process and prioritization of where investments are made (e.g., what side of town) can have huge implications for a community’s resilience in the face of environmental pollution and/or climate change. These planning decisions often include a cost-benefit analysis. This analysis should be based on a comprehensive vulnerability analysis and alternatives development and selection that includes the social costs of project impacts to properly ensure environmental and climate justice.
Reducing the Embedded Carbon Content of Construction Projects
As planners and contractors start thinking about how to account for the carbon emissions released to create construction products (the “embedded carbon content”), like concrete and steel, decision makers must ensure that the final process for doing so is equitable. Currently, Wisconsin is in the planning phases for considering these emissions. However, we know that smaller contracting businesses will be less equipped to make the large adjustments required to their business and processes. Decision makers must ensure these smaller businesses receive additional support in making transitions to sustainable practices so they are not left behind in the marketplace.
Environmental and Climate Justice Issues
As pressure to develop increases, environmental and climate justice concerns are present in the design, operation, management, and financing of Wisconsin’s infrastructure.
Stories
Our Team
Austin Polebitski (chair), Professor, Civil and Environmental Engineering Department at the University of Wisconsin Platteville
Robert Montgomery, P.E. (drainage group lead), Principal Engineer, Emmons & Olivier Resources and adjunct faculty member, UW–Madison Department of Civil and Environmental Engineering
Our team includes professionals with expertise in various sectors of infrastructure. If you are interested about how climate change will impact the built environment around you, please email Austin Polebitski (polebitskia@uwplatt.edu) and he can put you in contact with an appropriate subject matter expert.
Resources
- American Society of Civil Engineers Policy Position on Climate Change
- American Society of Civil Engineers Committee on Adaptation to a Changing Climate
- Institute for Sustainable Infrastructure Envision Project Rating Program
- The Infrastructure and Climate Network (ICNet)
- Water Utility Climate Alliance
- Project Drawdown






