2025 Drawing - Trimming of Bridge Embankments.pdf

This is a Kentucky Department of Highways standard drawing (RGX-100-05) detailing the treatment of embankments at end-bents. The drawing provides technical specifications for four distinct materials and their application in bridge construction: slope protection, embankment (granular, rock, or soil), granular pile core/cohesive pile core, and structure granular backfill. The plan includes both a plan view and cross-sectional view (Section A-A) showing the placement of these materials, along with 4" perforated underdrain pipes and 8" perforated underdrain pipes for headwall construction.

The drawing specifies that slope protection is required when noted on bridge plans, granular/rock embankment is required per roadway plans, and structure granular backfill is required at all times. For pile foundations, granular pile core is required with granular or rock embankment, while cohesive pile core is required with drilled shafts and pre-drilled piles. The drawing is designed to work in conjunction with current standard drawing RGX-105 and RDP-010 for headwall construction specifications. The drawing shows a zero-degree skew configuration but notes that the same principles apply to varied structures.