Get Aashto Pedestrian Bridge Vertical Clearance Pics . The adopted criteria provide vertical clearance values for the various highway functional classifications (table 19). Rating (lrfr) of highway bridges • aashto lrfd movable highway bridge design specifications. Chapter 7 Proposed Changes To Aashto Lrfd Bridges For Service Life Beyond 100 Years Service Limit State Design The National Academies Press from images.nap.edu Companions, aashto lrfd bridge construction aashto lrfd bridge design. • increasing vertical clearance in addition to that contained in aashto lrfd. • providing structural continuity of the superstructure, either between pedestrian bridges shall be designed for specified limit states to achieve the objectives of safety, serviceability, including comfort of the pedestrian user. The aashto (american association of state highway and transportation officials) lrfd minimum ver...