An ADA Transition Plan is one of the most important tools municipalities use to improve accessibility in public infrastructure. For cities and towns across the Greater Chicagoland Region, developing or updating an ADA Transition Plan requires more than good intentions—it requires reliable, defensible data about existing sidewalk and ramp conditions.
In 2025, A3 Environmental (A3E) supported a pedestrian infrastructure project in Illinois that directly contributed to ADA Transition Plan development. Working alongside the team at DeepWalk, we provided mapping and field data collection services focused on documenting sidewalk and ramp conditions using LiDAR-based technology.
The objective was straightforward: help create a clearer understanding of where accessibility barriers exist so municipalities can prioritize improvements within their ADA Transition Plan. By combining trained field staff with modern data collection tools, the project helped translate on-the-ground observations into structured information that city planners and engineers can use.
Field Data Collection for ADA Transition Plan Development
Accurate field data is the backbone of any effective ADA Transition Plan. Without reliable documentation of conditions, it becomes difficult for municipalities to prioritize improvements, plan budgets, or demonstrate progress toward accessibility goals.
After onboarding and training with DeepWalk’s mobile LiDAR platform, A3E’s field team began data collection in late September 2025 throughout a community in the Greater Chicagoland Region. Using the mobile application, sidewalks and curb ramps were scanned while walking city streets, capturing detailed surface and elevation data.
This process allowed the team to identify conditions commonly evaluated during ADA Transition Plan assessments. These included potential trip hazards, surface irregularities, drainage or ponding areas, and driveway transitions that may affect accessibility for pedestrians using mobility devices.
Unlike traditional clipboard inspections, LiDAR-based data collection provides measurable and consistent documentation. Each recorded condition is tied to a geographic location, allowing issues to be visualized spatially across the community. For municipalities building or updating an ADA Transition Plan, this spatial context is critical.
The result is a more comprehensive inventory of pedestrian infrastructure conditions—an essential foundation for prioritizing improvements within an ADA Transition Plan.
Process and Technology Behind the Data
The workflow for this project was designed to ensure that data collected in the field could be easily translated into information usable for ADA Transition Plan planning.
Each day, scans captured in the field were uploaded into DeepWalk’s mapping platform. The platform converts raw LiDAR scans into a mapped dataset that allows sidewalk and ramp conditions to be visualized geographically. Municipal staff and project teams can then review hazards in context rather than as isolated notes.
Conditions identified during the survey process were categorized and ranked based on severity. This ranking system helps municipalities align findings with ADA Transition Plan priorities by highlighting areas where improvements may be most urgently needed.
Equally important, the digital workflow improves transparency and repeatability. Because conditions are documented using consistent data collection methods, municipalities can rely on the dataset when making decisions about accessibility improvements or future capital planning.
For many communities, integrating technology into ADA Transition Plan development is becoming increasingly valuable. It allows limited municipal resources to stretch further while producing more defensible and comprehensive accessibility inventories.
Community and Planning Value in 2025
Municipalities in the Greater Chicagoland Region face growing expectations to demonstrate progress toward accessibility improvements. An ADA Transition Plan provides the roadmap—but accurate data determines how effective that roadmap will be.
By supporting data collection efforts in 2025, this project helped provide city stakeholders with a clearer, data-driven understanding of existing sidewalk and ramp conditions. With mapped hazards and ranked priorities, municipalities can more confidently determine where to focus infrastructure investments.
This type of dataset strengthens ADA Transition Plan implementation in several ways. First, it allows decision-makers to allocate funding toward areas with the highest accessibility impact. Second, it provides documentation that can support grant applications or regulatory reporting. Finally, it helps communities communicate clearly with residents about how accessibility improvements are being prioritized.
The practical benefit is simple: better data leads to better planning. And better planning leads to safer, more accessible streets.
Accessibility Challenges in the Greater Chicagoland Region
Infrastructure conditions in northern Illinois present unique challenges for ADA Transition Plan implementation. Freeze–thaw cycles, aging sidewalks, and heavy seasonal precipitation can quickly worsen small surface irregularities.
Because of these environmental factors, communities across the Greater Chicagoland Region often need updated data to maintain an accurate ADA Transition Plan. Conditions that were acceptable a few years ago may no longer meet accessibility expectations today.
Mapping-based assessments allow municipalities to establish a clear baseline of current conditions. This baseline can then support long-term ADA Transition Plan updates as infrastructure ages and improvements are completed.
The approach also scales well across different types of communities—from dense urban corridors to suburban neighborhoods. Consistent data collection methods ensure that accessibility conditions are evaluated the same way across an entire municipality.
Supporting Better ADA Transition Plans
This 2025 pedestrian infrastructure project demonstrated how modern data collection can strengthen the development and implementation of an ADA Transition Plan. By combining LiDAR-based mapping technology with trained field staff, A3E Environmental helped transform street-level observations into structured data that municipalities can act on.
Partnering with innovative technology providers like DeepWalk also reflects a broader philosophy: we are always open to testing new tools and approaches when they help our partners deliver better outcomes.
For municipalities and organizations working to develop or update an ADA Transition Plan, accurate infrastructure data is essential. And when that data is clear, organized, and geographically mapped, it becomes far easier to turn accessibility goals into real improvements on the ground.
