Maintenance Standards

Last Update: Thursday, October 20, 2022


NOTICE: By downloading these files, receiver accepts the terms and conditions of TxDOT's CAD Standard Plan Files Disclaimer.


INSTRUCTIONS: Clicking on the MicroStation filename can download MicroStation (DGN) files in a self-extracting zip format. After the zipped file has been downloaded, execute the file to uncompress it.

MicroStation (DGN) filenames that have the companion PDF Icon icon can be viewed in Adobe® Acrobat® Reader by clicking on the PDF Icon icon.


Maintenance Division CAD Standard Plan Files


Note: 1.

Turn off level 2 (Working scale)


To ensure proper display of text, use the new improved txfont (font library) or txdot.rsc (font resource file).


Best results are achieved when using one of the following files when plotting.


A. irp.tbl

Iplot/Hplot pentable.


B. statelzr.plt

Microstation 4.0 plot configuration file for HP LaserJet Postcript printers.


C. fullbwe.plt

Microstation 95 plot HP/GL2 plotfiles for HP DesignJet plotters. Such as HP755CM or HP650C.


D. ljetpsbe.plt

Microstation 95 plot driver file for HP LaserJet Postcript printers. Such as HP4MV and HP5SI. Supporting files also needed are controld and, these supporting files are to reside in the same directory as the ljetpsbe.plt.


Memorandums of Issued/Revised Standards



File Name

10-19-22 2022 Mailbox Placement Standards Memo PDF Icon - 27.50KB - Click Here to View MEMO1022.pdf
07-27-21 2021 Mailbox Standards Memo PDF Icon - 27.50KB - Click Here to View MEMO0721.pdf
04-13-15 2015 Mailbox Standards; 2015 Tree and Brush Removal Standards PDF Icon - 27.50KB - Click Here to View MEMO0415.pdf
07-01-14 2014 Mailbox Standards Memo PDF Icon - 27.50KB - Click Here to View MEMO0714.pdf


Mailbox Standard, MB-11(1)

PDF Icon - 27.50KB - Click Here to View MEMO0111.pdf


Mailbox Standard, MB-09(1) and MB-09(2) & Tree and Brush Removal Standards, TRB-09(1) and TRB-09 (2)

PDF Icon - 343.85KB - Click Here to View MEMO1109.pdf


Mailbox Standard, MB-06(1) and MB-06(2)

PDF Icon - 52.78KB - Click Here to View MEMO1106.pdf


Mailbox Standard, MB-05(1) and MB-05(2)

PDF Icon - 188.08KB - Click Here to View MEMO0605.pdf


Revised Mailbox, Roadside Traffic Control Plan, Post and Cable, and Obsolete Standard Drawings

PDF Icon - 1.90M - Click Here to View MEMO0205.pdf


2004 Maintenance Standards Revisions

PDF Icon - 2.86M - Click Here to View MEMO0904.pdf


2004 Maintenance Standards Details

PDF Icon - 374.15KB - Click Here to View MEMO0704.pdf


Revised Mailbox Mounting Details (MB-04) Standard Sheets

PDF Icon - 42.24KB - Click Here to View MEMO0304.pdf


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Maintenance Division CAD Standard Plan Files



File Name

MB (1)-21

Mailbox Mounting and Assembly (Sheet 1 of 4)

PDF Icon - 1.75M - Click Here to View MB-21(1).dgn

MB (2)-21

XL and Lockable Architectural Mailbox Assembly (Sheet 2 of 4)


MB (3)-21

Mailbox Support/ Foundation (Sheet 3 of 4)


MB (4)-21

NIGP Parts List and Compatibility (Sheet 4 of 4)



Mailbox Placement Standards

PDF Icon - 223.54KB - Click Here to View MBP-22.dgn


Sweeping Highways

PDF Icon - 182.77KB - Click Here to View SWEEP04.dgn

TRB-15 (1)

Tree and Brush Removal (Sheet 1 of 2)

PDF Icon - 752.85KB - Click Here to View TRB15.dgn

TRB-15 (2)

Tree and Brush Removal (Sheet 2 of 2)

PDF Icon - 296.87KB - Click Here to View TRB15_2.dgn


Strip Mowing Non-Divided Highways

PDF Icon - 201.92KB - Click Here to View SMOWND04.dgn


Strip Mowing Divided Highways

PDF Icon - 410.23KB - Click Here to View SMOWD04.dgn


Roadside Traffic Control Plan

PDF Icon - 688.74KB - Click Here to View RSTCP05.dgn


Post and Cable Fence

PDF Icon - 254.06KB - Click Here to View PCF05.dgn