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 technical drawing provides specifications for four distinct material zones in bridge embankment construction: slope protection, embankment material (granular, rock or soil), granular/cohesive pile core, and structure granular backfill. The drawing includes both a plan view and cross-sectional view (Section A-A) showing the placement and configuration of these materials, along with 4" perforated underdrain pipes.

The drawing specifies that slope protection is required as noted on bridge plans, granular/rock embankment as noted on roadway plans, and structure granular backfill is required at all times. The pile core section can be constructed with either granular or rock embankment, and cohesive pile core is required with drilled shafts and pre-drilled piles. An 8" perforated underdrain pipe is specified for headwall construction, referencing standard drawing RDP-010. The drawing is designed for zero-degree skew but notes that the same principles apply to varied structures, demonstrating standardized requirements for bridge embankment construction in Kentucky.