The Michigan Engineers' Resource Library (MERL) is a software suite that helps transportation engineers create road and bridge project estimates, enter and analyze bids for local jobs, and track daily postings and payment estimates. In addition, MERL provides access to various Michigan Department of Transportation (MDOT) resource documents. MERL was created by the Center for Technology & Training (CTT) at Michigan Technological University. (Read more)


MERL 5.3.3 Update Available

Friday, February 5, 2016

MERL 5.3.3 Update Available


The update to MERL 5.3.3 is now available for download. The update and the complete list of changes for MERL 5.3.3 are available at MERL Downloads

In addition to updating 2012 Pay Item average unit prices and resolving several issues in MERL, this release includes the previously announced support change for Windows XP or SQL Server/SQL Server Express 2005. Once updated to 5.3.3, MERL will no...

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Support Ending for Microsoft SQL Server 2005 & Windows XP

Monday, December 14, 2015

As of January 1, 2016 the CTT will no longer support Roadsoft, Laptop Data Collector (LDC), or MERL on Windows XP or SQL Server 2005 due to product support termination by Microsoft. A Roadsoft RoundUp article was published in June detailing this transition.

For customers using SQL Server Express 2005, the CTT is providing a SQL Express Upgrade (2005 to 2012) installer on our websites for those customers needing to update.  Customers using other versions of SQL Server 2005 should notify...

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Responsive HTML5 Manual Released

Monday, July 27, 2015

The MERL Manual has been redesigned in Responsive HTML5 to be more usable on tablets and smart phones. The size and layout of the manual will now change depending on whether the manual is being viewed on a PC, tablet or smart phone.