Appendix_C_SDDOT Standard Plates.pdf

This document is Appendix C containing South Dakota Department of Transportation (SDDOT) Standard Plates for the Crest Road Asphalt Surface Treatment and Joint Sealant/Repair project at Gavins Point. The appendix consists of technical design and installation specifications illustrated through standard engineering plates and diagrams.

The plates provide detailed guidance for traffic control devices, pavement markings, and construction signage required during the asphalt surface treatment project. Key specifications include intersection approach pavement marking standards showing STOP and AHEAD sign placements; truck crossing sign installation with spacing tables based on posted speed (ranging from 0-30 mph to 70+ mph); loose gravel warning guides with plaques and spacing requirements; stop line pavement marking installation details; and approach pavement markings for two-lane to four-lane divided highways. Additional plates address lane closures with and without barriers, flagger provisions, channelizing device placement using drums or cones, and temporary pavement markings. The document includes tables correlating posted speeds with advance warning sign spacing in feet and specifications for crosswalk markings, longitudinal stripe dimensions, and taper lengths. All plates are dated 2024 and reference SDDOT standards for uniform traffic control device implementation during road work operations.