The new community bike park on London St is expected to be completed by March.
The park project, which is being constructed next to the Splash Centre, is being led by Sport Whanganui but has had significant community input.
It will include a senior and junior pump track, two permanent shade areas and a learn-to-ride track for young children to practise safe cycling and scootering.
Local businesses have supported the project with donated material, equipment and time.
"The project started off slow and took a while to gain momentum but now that people can see things happening they are keen to support it in any way they can," Sport Whanganui's community sport manager Jodie Brunger said.