While waiting for Alex to return from vacation I kept myself busy with a little work at the bridge site.
I can now relate with some tiny amount of personal experience what Milton Graton did in 1968 when he built the 140' Union Street Bridge in Woodstock, Vermont. The pictures in his book on pages 98 - 101 are beyond belief! Surly if you are interested in this type of thing by all means get a copy of his book, The Last of the Covered Bridge Builders. The engineering and design of moving this bridge by hand over the river and into place is the stuff of legends! Truly Milton was a master of his craft.
Puzzler - How will loading and unloading of the truss parts need to be managed and what difference will it make?
Tech Vocab - Crib - Capstan - Needles - Rolls - Shoes - Rocker Blocks - Abutment - Track