Bridge abutment design manual. 11. 3 (October 2025) (xlsm) Mechanically Stabilized Earth (MSE) Wall Design The requirements of the 9th Edition of theAASHTO LRFD Bridge Design Specification; as modified and supplemented by the Bridge Design Manual(BDM), Bridge Design Guides (BDG), and 2020 Standard Specifications for Construction (SSFC);are followed. Abutment foundations must also be designed to LRFD Bridge Design Manual (BDM) LRFD Bridge Design Manual The LRFD Bridge Design Manual contains MnDOT Bridge Office procedures for the design, evaluation and rehabilitation of bridges. 2 CODE REQUIREMENTS 11 The design of abutments, piers, and retaining walls shall be in accordance with AASHTO, this BDM, the Geotechnical Design Manual, and current Staff Bridge Worksheets. Caltrans 11. The requirements of the 9th Edition of the AASHTO LRFD Bridge Design Specification; as modified and supplemented by the Bridge Design Manual (BDM), Bridge Design Guides (BDG), and 2020 Standard Specifications for Construction (SSFC); are followed. 1 INTRODUCTION Abutments are the substructure components at the ends of a bridge used to transfer the loads from the superstructure to foundations, support approach slabs, and retain the approach embankment. FOREWORD This manual provides information on the design and construction of Geosynthetic Reinforced Soil (GRS) abutments and the Geosynthetic Reinforced Soil-Integrated Bridge System (GRS-IBS). 1 General Abutments are used at the ends of bridges to retain the embankment and to carry the vertical and horizontal loads from the superstructure to the foundation, as illustrated in Figure 12. May 1, 2023 ยท The topmost portion of an abutment above the elevation of the bridge seat functioning primarily as a retaining wall with a live load surcharge; it may also serve as a support for the extreme end of the bridge deck and the approach slab. vck ovqtd qnfzs lyrn dbdfho gkzwem oqeje nesl agor ieciz