Manual Notice: 2022-2
From: Marisabel Ramthun, P.E
Manual: Roadway Design Manual
Effective Date: December 19, 2022
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The Roadway Design Manual has been revised to update Table 3-8 which represents 4R travel lane and shoulder widths for Rural two-lane highways. The Table has been updated to add in separate column categories for a future ADT of 400 - 1500, and for a future ADT of 1500-2000. The values of these newly added columns have been updated accordingly.
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Chapter 3, Section 4
Updated Table 3-8 by updating criteria values for travel lanes and shoulders for rural two-lane highways. Also, updated footnotes in table.
Instructions
This manual, and all revisions, applies to all transportation project development (all modes), whether developed by the department or by other entities. Due to projects that may be further along in development with current criteria, this manual, and all revisions, will be effective for all projects beginning with the September 2023 Letting, and if project schematic or 30% plans have not been approved by November 1st, 2022. The Districts have the options to use these revisions prior to these dates.
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Contact the Roadway Design Section Director of the Design Division at (512) 416-2678 with any questions or comments.
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Past manual notices are available in a PDF archive.