Bridge Pedestrian Loading

[jjddgg]

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 loading change between the 2008 and 2009 Interim Revisions? Thanks.

 

[broekie]

The 5th edition of LRFD (2010) says that a pedestrian load of 75 psf shall be used for all vehicluar bridges. If you are designing a pedestrian bridge, the latest version of AASHTO directs you to the guide specs:

"Bridges intended for only pedestrian, equestrian, light maintenance vehicle, and/or bicycle traffic should be designed in accordance with AASHTO's "Guide Specifications for the Design of Pedestrian Bridges."