On one run where I had way too much stone and wood laying about, I built a covered bridge cart-way from Meadows thru Swamp to the nearest crypt. Used 6-8 meter high single block pillars of earth or those invulnerable trees for support every 8 to 10 meters along the way. Minimum height above ground through the Swamp section was around 7 meters.

Used 26 degree roofs as flooring to change elevations to match ground height along the way. Was completely insane but worked great.