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Transportation Bids and RFPs

Online Bidding

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 digital ID:

Using Bid Express

Do I have to submit my bids online using Bid Express?

Yes, beginning October, 2014 all sealed bids to Cobb DOT must be submitted online through BidExpress. Contractors are encouraged to begin using this process to save time and help eliminate errors on their bid.

Is using Bid Express free?

It is free to view bids online using BidExpress. It is also free to download as many digital IDs as you need to submit bids. But, there is a $25 per bid submission fee that is paid to BidExpress. Vendors may also choose to do a monthly subscription of $50 for unlimited bids. Vendors using BidExpress will get electronic notification of all bid addendums.

Can I get plans online, too?

Right now, plans can still be purchased at DOT in either paper form or on a CD. Plans will soon be available from the Cobb DOT website.

What about the bid bond?

Vendors may continue to submit paper bid bonds or certified checks when submitting online bids. Paper bid bonds or certified checks must be turned in to the Cobb County Purchasing Department by Bid Opening time for the bid to be considered responsive.

However, with BidExpress, Vendors are strongly encouraged to use an electronic bid bond number online with their bid through BidExpress. Vendors should contact Surety 2000 or Surepath to set this up and get a valid bid bond number. Bid bond numbers will be verified through BidExpress and Vendors will be notified immediately if the bid bond number is not valid.

How do I learn how to use Bid Express?

There is information and documents available for getting started and using BidExpress on the DOT website. Also, you can call BidExpress Customer Service at (888) 352-2439 for help or instructions or go to Info Tech’s Customer Service has been extremely helpful.

Who do I call if I run into a problem using Bid Express?

BidExpress Customer Service at (888) 352-2439 between the hours of 7:00 am – 6:00 pm Monday – Friday.

Where can I see plan holders list?

Cobb DOT will continue to maintain a plan holders list, but will only include Vendors that purchased bid documents or plans from Cobb DOT. Vendors that purchased bid documents from BidExpress will be listed on the BidExpress website.

Current Bids

Project Project No. Advertise Date Bid Date
2019 Countywide Pavement Marking Contract TR514 06/14/2019 07/11/2019
Factory Shoals Road/Beverly Drive (Harmony Leland/Clay ES Relocation) School Zone Safety and Operational Improvements X2807 06/14/2019 07/11/2019
Hicks Road at Concord Road Intersection Improvements X2307 05/31/2019 06/27/2019
Silver Comet Trail Bridge Repairs X2119 05/31/2019 06/27/2019
Big Shanty Road Sidewalk Pedestrian Improvements


GDOT P.I. No. 0010706

05/31/2019 06/27/2019
Cherokee Street Roadway Improvements X2603 05/17/2019 06/13/2019

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
Mableton Parkway Trail, Phase II X2770 09/28/2018 10/25/2018
I-75/Third Army Road Engineering
(New Interchange)