Cobb County Government

Policy for Procurement of Professional Services alt (Nov. 2014)

Cobb County Department of Transportation Transit Division DBE Program Methodology alt (April 2017)

Cobb County Purchasing - Bidding Opportunities


Online Bidding

Frequently Asked Questions

Cobb DOT has “Gone-Live” with online bidding opportunities. Cobb County DOT will include options for paper bidding and online bidding during a transition period of several months. After this time, only online bids through BidExpress will be accepted by Cobb DOT. For now, we are requesting all contractors to bid through only one system: preferably online, but not both. In addition, we will offer the option of online bid bonds or paper bid bonds.

For those contractors who are bidding online and would prefer to utilize the electronic bid bond option as well, click here for the electronic Bid Bond company information.

Contractors bidding online will need to create a Digital ID's through Bid Express.

If you have any additional questions or concerns, please contact the Bid Express Support Team at 888-352-2439. 

Below are links to information from Bid Express to help you register and get your digitial ID:

Quick Start Guide

Bid Express Smart Forms

Vendor Training and Registration Guide


Project Project No. Advertise Date Bid Date
Irwin Road Sidewalk
Legal Advertisement  alt
Special Provisions / Supplemental Specifications  alt
Section 4  alt
Section 5  alt
Addendum 1  alt
Addendum 2  alt
E7570 06/15/2018 07/19/2018
Shallowford Road Sidewalk
Legal Advertisment alt
Special Provisions / Supplemental Specifications alt
Section 4 alt
Section 5 alt
Appendix alt
E7420 6/29/2018 7/26/2018


E-Procurement Is Here!!

The Cobb County Purchasing Department is now posting solicitations to BidNet's Georgia Purchasing Group. Now that we are posting our solicitations to this platform, registered vendors can automatically be notified of matching bids and addenda. Later on this year, we will also be allowing vendors to submit bid responses electronically as well. We encourage vendors to go ahead and register even if not currently responding to a solicitation. Vendors may register here free of charge by selecting the Limited Access option. Notices will continue to be posted here on the County's website (with a link to the Georgia Purchasing Group page) and in the Marietta Daily Journal on Fridays. If you have any questions, please don't hesitate to contact us.

Note: Cobb County DOT construction bids will continue to be posted on Bid Express.


RFP Schedule

Upcoming RFPs (In Order of Advertise Date) Dates Subject to Change

Project Project No. Advertise Date Bid Date
Bob Callen Trunk Trail Phase II, Segment B
Approved Revised Concept Report alt
NEPA Document Reeval alt
Bridge Foundation Investigation Report alt
Partial Plans alt
Design Layout alt
D11M0 / P.I. 0012808 7/13/2018 8/9/2018
Mableton Parkway Trail, Phase II X2770 9/28/2018 10/25/2018
I-75/Third Army Road Engineering
(New Interchange)


Last updated July 13, 2018