Both approaches use unsealed 4WD-only fire trails. From Sydney, Burralow Road leads to about 8 km on Tabaraga Ridge fire trail; from Lithgow, Paterson Range fire trail runs about 10 km to the bridge. The tracks are narrow and steep in places, and can be slippery when wet, so this is not a drive for a standard car. Book before you arrive; reception is limited.
There’s no drinking water or rubbish collection. Bring your own water and firewood from outside the park, and take your rubbish back out. Non-flush toilets are provided, and fires are allowed only in the fire rings. Dogs aren’t allowed, except certified assistance animals.