If you are like most people you probably haven’t ever considered how to best design a sidewalk; for many people, its as simple as asking, “is there one or not”. But if you are like me, you understand that sidewalk design can play a huge role in the vibrancy of street-level activity, allowing businesses to thrive and acting as the “front steps” to a city.
The design and operation of sidewalks has been an area of interest for me throughout my career. Unfortunately, the design and location of sidewalks, particularly in new subdivisions, is often a decision by a engineering or drafting technologist, based on municipal standards, without consideration of how the sidewalk space will be used.
As a side note, all of the ideas below are intended to apply on streets that should have pedestrian traffic. There are many cases on higher volume roads with heavy distance commuter traffic, where pedestrian access should be limited, or fully separated. But in places where sidewalks work, there are some fairly obvious principles that can make for a great sidewalk, and be used to improve the streetscape.
I’ll use some examples from the town I currently work in to describe how these design principles can work.
This isn’t my first post on sidewalks, I keep coming back…
Safety
Pedestrian safety is the primary reason we build sidewalks. The sidewalk should ensure separation from vehicular traffic. There are a couple of ways we can achieve this.
Grade separation
A simple 6″ (150mm) upright or barrier curb provides adequate grade separation for vehicles on slower-speed streets. Vehicles that bump into a curb are directed back onto the roadway. In many places, including suburbs and even downtown areas, roll over (or mountable) curb profile has been installed, which deliberately allows vehicles to mount the curb. This type of curb is not suitable in areas where vehicles travel at higher speeds, or in downtown or urban areas where parked vehicles can easily block sidewalks.
Continue reading “Sidewalk Design Parameters”Grade separation
A simple 6″ (150mm) upright or barrier curb provides adequate grade separation for vehicles on slower-speed streets. Vehicles that bump into a curb are directed back onto the roadway. In many places, including suburbs and even downtown areas, roll over (or mountable) curb profile has been installed, which deliberately allows vehicles to mount the curb. This type of curb is not suitable in areas where vehicles travel at higher speeds, or in downtown or urban areas where parked vehicles can easily block sidewalks.
Continue reading “Sidewalk Design Parameters”





