How tall are bollards?
Oct 11, 2025| Bollard sizes vary depending on their design and intended use, from vehicle protection to pedestrian guidance. The height of a bollard is crucial to its functionality, visibility, and compliance with safety standards. In most cases, bollard heights range from 24 inches (600 mm) to 48 inches (1,200 mm) above the ground.
Below, we'll explore typical height standards for each type of bollard.
Height of Manual Retractable Bollards
When fully extended, manual retractable bollards typically stand 30 to 36 inches (760-915 mm) above the ground.
This height ensures the bollard is clearly visible to drivers and pedestrians while maintaining a clean, understated appearance when not in use. When retracted, the bollard sits flush with the ground, allowing vehicles to pass freely.
Bollards are typically buried 12 to 18 inches below ground.
Height of Automatic Bollard
Automatic (hydraulic or pneumatic) bollards are commonly used for crash protection and typically rise 24 to 42 inches (600 to 1,065 mm) above ground level.
These bollards are commonly installed in parking lots, restricted areas, and building entrances.
Underground automated systems can have a total depth exceeding 40 inches.
Height of Fixed Bollard
Fixed bollards typically rise 36 to 48 inches (915-1,220 mm) above ground level.
They are typically made of steel, concrete, or stainless steel and are permanently installed for security and traffic control purposes. They are commonly found along roadsides, in storefronts, and in pedestrian areas.
The buried portion is usually the same height as the visible portion.
Height of Removable Bollard
Removable bollards typically have a height of 30 to 42 inches (760-1,065 mm).
Their height ensures visibility to drivers while allowing for easy removal when access is required.
They are commonly used in temporary restricted areas, private driveways, or event areas.
The embedded depth is greater than 30 inches.
Height of Plastic Bollard
Plastic or flexible bollards are typically shorter and lighter, ranging in height from 28 to 36 inches (710-915 mm).
They are primarily used for traffic guidance, lane separation, or parking lot marking.
These bollards are designed to flex or expand upon impact, rather than to stop vehicles.
While they are not suitable for high-impact protection, their primary function is visual guidance.
Common bollard heights range from 24 to 42 inches, but some custom bollards can be taller.