For those interested in curved viaducts, the following link and post 14 is also relevant. The title is probably not of immediate interest re viaducts. But shows a different way to construct a curved viaduct.
http://www.gscalecentral.net/tm?m=55337&high= < Link To http://www.gscalecentral...?m=55337&high=
JonD
http://www.gscalecentral.net/tm?m=55337&high= < Link To http://www.gscalecentral...?m=55337&high=
JonD