Consultant Selection Office
The Consultant Selection Office (CSO), in coordination with the Commissioner, manages and directs all activities regarding the solicitation and selection of consultant firms for all Department Bureaus.  The CSO also coordinates the annual consultant prequalification process.
Consultant Selection Office 
Office of the Commissioner
Connecticut Department of Transportation
Telephone: (860)594-3017
Fax: (860)594-3491
or email to:
The Consultant Selection Office is now using electronic (email) notifications.  Please ensure emails from & are not automatically marked as spam by your email system.

RECENT SELECTION REVISION !!! -    Beginning May 1, 2021, the consideration of Recent Selection criteria will change to the following:

  • The ‘look back’ window will be extended to 12 months.
  • Firms may be selected for 2 assignments within a 12 month rolling period.
  • Firms may only be selected for one assignment in the same prequalification category in a 6 month period.
  • Recent Selection will continue to be waived if less than the minimum number of firms statutorily required to be interviewed submit proposals in response to a solicitation.
IMPORTANT:  Assignments which fall under the Construction Engineering and Inspection (Rails) or Construction Engineering and Inspection (Facilities) prequalification categories, or assignment advertised via legal notice, will continue to be excluded from the recent selection criteria, and do not affect a firm's ability to pursue other assignments.  



Active Solicitations for Consultant Services

  • CSO #2350 - Innovative and Alternative Financing    
  •   CSO #2359 - CEI (Road & Bridge) Project No. 102-295

Review Material -  plans    90% specs (draft - subject to change)

  •   CSO #2363 - REVISED - Statewide Inspection of Highway Bridges, Tunnels and Sign Supports 
  • CSO #2364 - Task Order Hydraulics & Drainage Support Services
  • CSO #2365 - Design Services for State Project No. 304-0022; Waterbury Branch Line Platform Replacements
  •   CSO #2366Task Order Photogrammetry Services
  •   CSO #2367Facility Upgrade Plan for Battery Electric Buses

  Review Material - Draft Scope of Work

  •   CSO #2369 - Construction Engineering and Inspection (Roadway & Bridge) Services for Project No. 0083-0267

  Review Material - Plans  Special Provisions

Past Consultant Selections - 4.20.21

Annual Consultant Prequalification Information for 2021 - Submittal deadline was November 16, 2020.  Applications are no longer being accepted.   


SBE Directory of firms.  (use Class 0600)

Affidavits     OPM Website

CSO 255 Submittal Form - Jan 2016 (word)