Redefines H, "Design Height and "Wall Height"
Adds geostrip reinforcement for MSE walls
Adds black base cap for paving on aggregate above and behind MSE, anchored and soldier pile walls
Changes pH requirement for PET geogrid reinforcement for MSE walls from 5-8 to 4.5-9
Updates seismic design criteria for MSE walls to be consistent with other previously updated wall provisions and current AASHTO & NCDOT Structures Management policies/guidelines
Adds requirement that PP geogrids for MSE walls be made in the USA
Eliminates HDPE bearing pads from MSE walls with panels
Sets minimum steel gauge and grade for steel strip connectors for MSE walls with panels
Clarifies measurement and payment for backfilling behind MSE, anchored and soldier pile walls
Updates Soil Nail Retaining Walls provision for the latest editions of the AASHTO LRFD Bridge Design Specifications and AASHTO LRFD Bridge Construction Specifications

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