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Cost Estimating & AASHTOWare Estimator

Cost Estimating

The Cost Estimating group is part of the Division of  Facilities & Transit.  The functions of  the Cost Estimating unit is to provide cost estimating guidance and to prepare the Engineer’s Estimates and bid analyses for Department-administered construction contracts.  The Cost Estimating group also provides as-needed assistance on the application of the Estimator software.

The Cost estimating Guidelines provide an overview and general guidance on preparing estimates for Department projects during project development and design.  The guidelines are applied in conjunction with the estimating software " AASHTO's Trns*port© Estimator"    
For questions regarding Cost Estimating please contact Mark Stopper.


AASHTOWare Estimator

Estimator is an interactive, PC based, stand-alone cost estimation system for highway construction.   The Connecticut Department of Transportation has adopted Estimator for use in preparing construction cost estimates.  All Final Design Plan (FDP) cost estimates must be submitted to ProjectWise , in digital Estimator format, as indicated by the  Digital Project Development Manual and outlined in the Trns•port  Estimator CTDOT Users Guide

Estimator can be installed stand-alone or in a networked environment with managed user access (within your firm).  Either installation model will use ConnDOT’s Estimator catalogs.  Estimator is a proprietary software product of Info Tech Inc.


  • New Items - Occasionally, an item needed for a construction contract is not included in the Estimator catalog.  When a bid item not included in the Estimator catalog is needed for a project, the designer should submit a  New Item Request. This request needs to be submitted at least six weeks prior to the Final Design Plans (FDP) due date.
  • Other Information - Sign up for E-alerts! To get notification of  Estimator catalog updates by e-mail, go to the Home page and select the “Receive Updates by E-Mail Sign – Up for E-alerts” link.  After logging in, select Engineering Applications and subscribe.
Guides & Workflows

Estimator CTDOT Users Guide Version 2.13a-1 April 2016 With Supplements for Estimator Version 2.15a

Generic Estimator Training Guide Version 2.13a - 08/12/15

Generic Estimator User's Guide   Version 2.13a - 08/12/15

System Manager's Guide Version 2.12a

Resources & Tools

Highway Log

Estimator Templates (zip file) 10/17/2012

Sample Estimator Spreadsheet   10/01/2013

Estimator Checklist 05/19/2021 Required with FDP estimate submittal.

New Item Request Must be submitted at least 6 weeks prior to FDP


Estimator Training for Consultants August 2015

Estimator Training for CTDOT Personnel August 2015

Consultant Resources
Consultant Catalogs (not required for internal users)  
(zipped xml files updated 05/04/2022)
Estimator Catalog updates available on or about 1st Wednesday of every month.  Sign up for E-Alerts to get notified
Note: The English 5 Year catalog is now available for reference, only to investigate prices on English items that do not have a sufficient 3 year bid history. Also available, for reference, is the English 1 Year catalog.  This catalog is only to investigate prices related to the recent rise in inflation and global commodity supply chain issues.  Do not use either of these catalogs to obtain prices for the entire estimate!

Metric catalog updates will be posted only when new metric items are added.  Since there are no up-to-date metric bid histories, it is recommended that if users have a metric project that they convert to English units, obtain an estimate using the ENG3yr catalog, and convert back to metric units/prices
(updated links May 2017)
( zipped xml files updated 12/12/2013)
General and product ordering information
Requests for information regarding the use of Estimator for Connecticut DOT projects should be directed to:

Link to Contract Development Webpage