A little make magic (leveraging redcloth and htmldoc) seems to have done the trick. Now high quality print output it ain't, but a good start!
bridges.pdf: bridges.html
htmldoc -t pdf14 --webpage bridges.html > bridges.pdf
bridges.html: bridges.textile
redcloth < bridges.textile > bridges.html
.PHONY: view
view: bridges.pdf
xpdf bridges.pdf
.PHONY: clean
clean:
@rm -f bridges.html bridges.pdf *~