ProductsPVC Bridge Voids
PVC bridge voids are tubular void formers cast into concrete bridge decks and structural elements to reduce dead load, save on concrete volume, and lower the overall structural weight of a span — without compromising strength where it’s needed. They’re a standard tool in modern bridge and civil infrastructure design.
Reduces Structural Dead Load
Displaces concrete volume in non-critical sections of the pour
Lowers Material Cost
Less concrete required per span, without reducing structural performance
Corrosion-Proof
Unaffected by moisture ingress, unlike steel or cardboard void formers
Made to Size
Manufactured to the exact diameter and length your structural drawings specify
Stable During the Pour
Rigid enough to resist flotation and deformation under wet concrete pressure
Consistent, Repeatable Manufacture
For multi-span or multi-girder projects
What is a bridge void former used for?
A bridge void former is a tube cast permanently inside a concrete bridge element to displace unnecessary concrete volume, reducing the structure’s overall dead weight while retaining structural strength.
Why use PVC instead of cardboard or steel void formers?
PVC void formers are corrosion-proof and unaffected by moisture during the pour, unlike cardboard which can weaken when wet, or steel which can corrode over the structure’s service life.
Can PVC bridge voids be manufactured to project-specific sizes?
Yes, PVC bridge voids are manufactured to the exact diameter and length specified in the structural design, rather than supplied as generic stock sizes.
Bridge voids are positioned by the structural engineer specifically where they will not compromise the load-bearing performance of the element; sizing and placement are determined by the project’s engineering design.
Yes. Because it’s weather-durable and waterproof, PVC column formwork can be delivered ahead of the pour and stored on site without degrading.