Yes, you're absolutely right to notice that! That gap underneath many street benches is actually a thoughtful and increasingly standard feature in urban design, especially in cities that prioritize accessibility.
The gap—typically around 6 to 12 inches high—is primarily intended to provide foot clearance for people using wheelchairs or other mobility devices. When a bench is built flush to the ground or with a solid base, a wheelchair user often can't pull up close enough to comfortably sit or converse with someone on the bench. By leaving that open space underneath, the bench allows a wheelchair's footrests to slide beneath, positioning the user at the same level as someone seated on the bench. This creates a more inclusive and social seating arrangement—no one feels left out or physically separated.
This design isn't just a nice gesture—it's often required by accessibility standards like the Americans with Disabilities Act (ADA) in the United States. While the ADA doesn't mandate every single public bench to have this feature, many municipalities adopt guidelines that recommend accessible benches, especially in parks, transit stops, and public plazas where inclusive design is valued.
Beyond accessibility, the gap also has practical benefits. It helps with drainage and cleaning, prevents water and debris from pooling under the bench, and reduces the chance of the bench base becoming a hiding spot for litter or pests. So while you might think of it as a small detail, that gap is actually a clever piece of urban planning that makes public spaces more welcoming for everyone—whether you're on foot, using a wheelchair, or just enjoying a sunny day in the park.