Home Business Engineering And Construction Bridge Design Services Structure Detail Drawings Historical Standards Historical Standards Historical Standards Standards drawings will be added as they are available. Archived Standards Drawings 1B-1 – Traffic Signing and Marking Standards (Sheet 1 of 2) PDF - June 2024 1B-1 – Traffic Signing and Marking Standards (Sheet 1 of 2) DGN - June 2024 1B-2 – Traffic Signing and Marking Standards (Sheet 2 of 2) PDF - June 2024 1B-2 – Traffic Signing and Marking Standards (Sheet 2 of 2) DGN - June 2024 1959 B-Standards 1973 B-Standards 1976 B-Standards 1981 B-Standards 1983 B-Standards 1987 B-Standards 1988 B-Standards 1992 B-Standards SD 9 Traffic Structure (Archived April 2019) SD 1 Railings (Archived Jan 2020) SD 3 Deck Joints (Archived Feb 2020) SD 7 Retaining Walls (Archived Dec 2021) SD 8 Sound Barrier Walls (Archived Dec 2022) SD 1.10_1 & 1.11_1 (Archived Feb 2023) SD 1.12 (Archived June 2023) SD 2 Approaches (Archived August 2023) SD 9.10 & 9.20 (Archived Oct 2023)