Digging & trail maintenance at 9th Street BMX:
Rules, guidelines and common sense
Thanks for your interesting digging at 9th Street BMX.
The trails have been hand built by locals over the past 25 years. All by hand, no bulldozers, no paid labor, no free dirt.
Basic trail maintenance
The lips and landings will get dry and crack. This erosion will detoriate the jump without maintenance.
Gather a small pile of dry dust/dry fine dirt in the pit between the lip and landing.
Sweep that dust/dry fine dirt into the cracks of the lips and landing.
Moderately spray the lip and landing with water.
Sweep more dust/dry fine dirt in the cracks and cover the watered area with dust/dry fine dirt.
Ride your work in immeadiately to pack in the dirt.
Scar/scratch the existing surface
Layer with new (moist) soil to the dersired depth- minimum of 2 inches.
Rake the new soil level and smooth. No bumps or depressions.
Remove any clods or rocks.
Pack the new soil evenly with a flat head shovel or 2"*6" piece of wood/stud.
Ride it in.
Where to get dirt?
Don't just dig a hole anywhere, make sure it is out of the way of any trails.
Make sure it is good dirt, not sandy or rocky.
In a safe place so one will fall or wreck into it.
Slope the edges of the hole for safety.
Don't disturb tree roots.
Always keep drainage in mind, if you can drain a pit between a ip and landing that is ideal.
- Never tear down an existing jump, berm, roller, obstacle or project - have respect
for other people’s hard work.
- Never steal dirt from one jump to fix another – don’t cannibalize.
- Finish any digging project you start promptly or don’t start.
- Make sure the dirt you are using to maintain or build jumps has similar moisture
content, dry dirt doesn’t stick to wet dirt and vice versa. When maintaining a jump,
spray the old surface with water before adding new dirt to help adhesion.
- Pack the dirt you throw evenly, smoothly and level as soon as possible.
- Don’t stack dirt on trees – it’s not healthy for the trees & the Urban Forestry
Service doesn’t approve and has the power to enforce and remove the dirt from the
- Put the tools up and turn the water off when you are through working each day.
Tools are expensive and will get stolen. Clean up after yourself.
- Think Drainage. The pits between the jumps fill with water after a rain. Ideally
each pit should drain to a deeper digging hole which is in a safe area near the
- Don’t dig holes in unsafe areas of the park; no pot holes, tiger traps or unsafe
pits. People can get hurt falling into the hole.
- We have a hundred jumps that need love and not enough volunteers/diggers. Focus
on getting all the existing jumps running before worrying about building new jumps.
Don’t start a new jump/line without talking to the locals/team/non-profit group
and getting group support.
- Be open minded, respectful and considerate when digging. People use different
digging techniques, there is no specific method of building and maintaining BMX
trails. However, the end result will determine if the technique was successful.
- If you would like to learn how to dig or digger better, please visit our
- If you would like to volunteer for our trail maintenance days, please visit
our Events page.
Thank you for your help!