We were in a restaurant last night and all tables were single slab tables 3 to 4 feet wide. Fir with fairly wide growth rings.
My brother commented that there is a single slab picnic table in Avery Park, Corvallis that is 85 feet long (or 93 feet) depending on the reference source.
This shelter in Avery Park & Natural Area is a popular choice for parties and weddings. It features a massive picnic table and is close to the dinosaur bones and the locomotive.
www.corvallisoregon.gov
Apparently installed in the mid 1980's.
Not 200', but it still would have been a unique load to haul.