
Accessibility is one of the most important aspects of any construction project, but especially when it comes to parking lots. Not only is it a legal and ethical imperative to achieve and maintain compliance, but doing so will also ensure a clean and professional aesthetic. If you want your Wisconsin parking lot to meet accessibility requirements and present an outstanding first impression, there are three critical components that your lot needs: slope, signage and striping. We’re going to discuss these three standards today, breaking down what exactly they are and how to make sure your parking lot is compliant.
[ READ MORE: Foundations of ADA Compliant Parking Lots ]
How Does Slope Affect Accessibility?
One of the most crucial components of compliance is proper slope, which comes into play during the actual construction phase of your parking lot. The Americans with Disabilities Act (ADA) requires that accessible parking spaces and access aisles must have a slope no greater than 2% (1:50) in any direction. This requirement is to mitigate the risk of rolling or tipping for individuals that use wheelchairs or mobility aids, especially when entering or exiting a vehicle. Here are some of the other key considerations for maintaining proper slope:
- Surface Drainage
- While the slope cannot exceed that 2% maximum, it’s imperative to still have some slope to allow for water runoff. If your accessible spaces don’t have some degree of slope, it can lead to pooling, ice formation and surface degradation, which creates whole new accessibility problems.
- Transition Zones
- These areas – such as curb ramps and sidewalk transitions – have their own slope requirement, which is typically a maximum of 8.33% (1:12).
- Consistent Grading
- Your parking lot surfaces as a whole, but particularly in these areas, also need to maintain consistent grading. Avoid abrupt changes in elevation or uneven surfaces, as this creates new hazards.
How Does Signage Affect Accessibility?
If you own and operate a business, you know how important signage is in a multitude of aspects. Accessibility signage is just as important. Here in Wisconsin, accessible parking spaces must be clearly marked with official signs that include the International Symbol of Accessibility. Here are the guidelines for proper accessibility signage:
- Each sign must be mounted at least 60 inches above the ground, maximizing visibility even in snowy conditions.
- Each sign must be located directly in front of the accessible space, not off to the side and free of any obstructions.
- All signs must be durable and reflective, especially if your parking lot is utilized during nighttime hours — which can start as early as 4:30 during Wisconsin winters.
- If an accessible parking space is also van accessible, it requires additional signage that indicates as much, typically with those two words beneath the International Symbol of Accessibility.
- Temporary signage, such as cones or portable signs, do not meet compliance standards here in Wisconsin.
How Does Striping Affect Accessibility?

The last standard we’re touching on today is striping, which is what defines the boundaries of your accessible parking spaces and access aisles. Ensuring that your accessible spaces are clearly marked is just as important as any other requirement, so make sure to regularly maintain your spaces to ensure the lines retain visibility to maintain compliance. Here are the standard requirements for striping in Wisconsin, as well as some suggestions for best practices:
- Each accessible parking space must have a width of at least 8 feet
- Each access aisle must have a width of at least 5 feet
- Each access aisle for van-accessible spaces must have a width of at least 8 feet
- All accessibility zones should feature an easily distinguishable striping color; for example, blue in contrast to the white or yellow striping of standard parking spaces
- Utilize thermoplastic striping to ensure durability and longevity, in contrast to traditional paint
[ READ MORE: Extend the Life of Your Wisconsin Parking Lot ]
Ensure ADA Compliance with Potrykus Construction
The best way to ensure accessibility compliance with the ADA is to partner with a local expert. Here at Potrykus Construction, compliance is always on our minds. We include accessibility standards and requirements in the plans for every project we tackle, so if you need to build or renovate a parking lot here in Wisconsin, be sure to get in touch with us here at the office. We look forward to working with you!