Structure and Bridge Division

Instructional and Informational Memoranda


The information provided in this electronic version of the Instructional and Informational Memoranda is a product of, and copyrighted by, the Virginia Department of Transportation (VDOT) and is intended to be used for informational purposes only and is not to be sold or otherwise distributed for profit. 

Although this data has been tested by VDOT, no expressed or implied warranties are made by VDOT concerning the accuracy, completeness, reliability and usability of this information.

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All users shall expressly hold VDOT harmless from any liability or loss due to a virus or any other computer or software generated problem associated with these files.                            
If you have any technical questions or problems (e.g., problems with Internet Explorer, Favorites, etc.), contact the Location and Design helpdesk at 804-786-1280 or 1-888-683-0345.

If you have any questions or problems with the information inside each page (i.e., the "content") of the memoranda, contact Junyi Meng, P. E. at 804-786-3817.  

Numbering format

Instructional and Informational Memoranda 


For reference, a selection of previous document versions is placed in the Zip file below, with voided dates as shown at the end of each file name.


Page last modified: Nov. 1, 2022