Is the new bridge pedestrian loading 90 psf? We have AASHTO LRFD 4th Edition w/ 2008 Interim Revisions and it specifies 85 psf. However, the LRFD Pedestrian Bridge Guide (December 2009) calls out 90 psf and references the 4th Edition w/ 2009 Interim Revisions. Did the 4th Edition pedestrian...