Minnesota Department of Transportation

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Survey tools and technology

Last updated April 1, 2026

MnDOT Office of Land Management Software

MnCon is a coordinate conversion program that performs conversions within or across the North American Datums of 1927 and 1983.  It works on keyboard input or ASCII (text) files of specific formats.  It converts between any two of 232 different map projections including: NAD27 and NAD83 latitude/longitude, NAD27 and NAD83 universal transverse mercator zone 15 extended, the three Minnesota state plane zones in both NAD27 and NAD83, 68 NAD83 Minnesota county coordinate system zones (including one covering all of St Louis County) and 159 NAD27 project zones.  Essentially MnCon replaces CONAD27, CONAD83 and the National Geodetic Survey's NADCON. Other individuals or agencies may use the MnCon at their own risk, with no expectation of user support.

Download

Install

  • Download and run MnCon.msi.
  • It will copy MnCon.exe to C:\Program Files (x86)\MnDOT-OLM-Software\MnCon by default, or to any other location the user specifies.

Notes

  • The current version of MnCon is 4.1.3, dated June 3, 2013

MnCogo32 is a coordinate geometry program developed by the Minnesota Department of Transportation for making survey calculations in field and office settings for horizontal and vertical curves, grading widths, and proportions.  It also calculates Public Land Survey section breakdowns.

It accepts four input file types: Comma-delimited, GEOPAK Print Points, GEOPAK XY, and SDMS.

The Section Subdivision function will write an input file that can be read by Bentley GEOPAK Cogo. PlotPLS.mvba is a Bentley MicroStation V8 macro written by MnDOT that can also use the same input file. A copy of that macro will be placed in the local MnCogo32 installation directory by the installer (Macro version 1.0.3, 10/7/2015).  Other individuals or agencies may use MnCogo32 at their own risk, with no expectation of user support.

Download

Install

  • Download and run MnCogo32.msi.
  • It will copy MnCogo32.exe to C:\Program Files (x86)\MnDOT-OLM-Software\MnCogo32 by default, or to any other location the user specifies.

Notes

  • The current version of MnCogo32 is 1.3.3, dated Feb. 24, 2020.

MnMultShot  is a coordinate analysis program developed by the Minnesota Department of Transportation to compare coordinate values on points that have multiple positions.  Other individuals or agencies may use the MnMultShot executable file at their own risk, with no expectation of user support beyond the included help file.

MnMultShot loads one or more ASCII coordinate files, then compares coordinates and computes a statistical analysis of all points with identical numbers located in any of the files.

MnMultShot supports MnDOT 80-Column, GEOPAK Delimited, Comma Delimited, GEOPAK Print Points & Cogo Input, and SDMS Points File formats.

Download

Install

  • Download and run MnMultShot_Install_242.exe.
  • Then run the resulting MnSetup.exe file. 
  • It will copy MnMultShot.exe, MnMultShot.hlp, and History.txt to C:\ Program Files(x86)\MnDOT-OLM-Software\ MnMultShot by default, or to any other location the user specifies.
  • The help file contains all the documentation available for MnMultShot.

Notes

HP33s Programs is a PDF document containing a collection of programs developed by the Minnesota Department of Transportation for making survey calculations.  Other individuals or agencies may use the program code in this file at their own risk, with no expectation of user support.

The user must key these programs into an HP33s calculator manually by following the instructions in the document.  The lack of an interface to a PC (or to anything else) was a deliberate choice by HP to make the calculator acceptable for professional examinations.

The package includes traverse, inverse, triangle, intersection, horizontal and vertical curves, area, and angle arithmetic functions.  Each program label includes a checksum that verifies all its steps have been entered correctly.

Download

Notes

  • The current version of HP33s Programs is dated April 1, 2010.

HP35s Programs is a PDF document containing a collection of programs developed by the Minnesota Department of Transportation for making survey calculations. Other individuals or agencies may use the program code in this file at their own risk, with no expectation of user support.

The HP35s calculator has several known bugs, but it seems to work well with this set of programs.  Search for 'hp-35s buglist' on the internet to find more information.

The user must key these programs into an HP35s calculator manually by following the instructions in the document.  The lack of an interface to a PC (or to anything else) was a deliberate choice by HP to make the calculator acceptable for professional examinations.

The package includes traverse, inverse, triangle, intersection, horizontal and vertical curves, area, ratio, and angle arithmetic functions. Each program label includes a checksum that verifies all its steps have been entered correctly.

Download: Quick reference guides are available for download in two versions

Notes

  • The current version of HP35s Programs is dated May 10, 2012.