Welcome & General Information

Thank you for your interest in our highway and bridge construction projects. The Rules Governing Construction Bidding for CDOT Public Projects ('the Rules"), 2 CCR 601-10, amended July 2018, govern all bids. If you have questions on bid rules or the project records, please contact RB Simmons at 303-757-9416 or Tracie Benton at 303-757-9354. 

General contractors must be registered and prequalified with CDOT to participate in the bids, please see our prequalification application at http://contracts.codot.gov. Darrell Wells is available for any questions you may have regarding prequalification at 303-757-9215. 

Our design-bid-build projects are procured with electronic bids exclusively on this website. To enter a proposal, you must obtain a Digital ID with Bid Express for an authorized agent identified on your CDOT prequalification application. To sign up for electronic bidding or if you have technical difficulties on the Bid Express web site or with the Project Bids software, please contact Bid Express Customer Support, 888-352-BIDX (2439) or email them at customer.support@bidx.com.

Plans and Specifications

We now have plans and specifications for all advertised projects at http://contracts.codot.gov. You must be registered on the system to see these documents. You will find them in the View menu of the Dashboard, under the "My Bid Solicitations" menu. While you view the plans and specs you can join the main Plan Holders List for CDOT. Bid Express, this site, also allows contractors to voluntarily join a Bid Express Plan Holders List.  

Notice to E-Bidders

The software required to read the electronic bid files is available at https//bids.cloverleaf.net/. Please create a user profile and hit "enter" once you complete all of the fields.

CDOT wishes to notify all bidders that the Department will affirmatively ensure that for any contracts entered into pursuant to the advertisements we post, disadvantaged business enterprises will be afforded full and fair opportunity to submit bids in response to our invitations. No bidders will be discriminated against on the grounds of race, color, national origin in the consideration for award in accordance with the provisions of Title VI of the Civil Rights Act of 1964 (78 Stat. 525, 42 USC). 

CDOT, in accordance with the provisions of Title VI of the Civil Rights Act of 1964 (78 Stat. 252, 42 U.S.C.  ยง 2000d to 2000d-4) and the associated Regulations, hereby notifies all bidders that it will ensure that for any contract entered into pursuant to our advertisements, disadvantaged business enterprises will be afforded full and fair opportunity to submit bids in response to this invitation and will not be discriminated against on the grounds of race, color, or national origin in consideration for an award.

The work on our projects is vital to the health of Colorado's economy and the traveling public's quality of life. We look forward to working with you.

What's New?

What's New Table. What's New Table lists the last 50 activities that happened in regards to the lettings
August
Letting Proposal Activity Activity Date
20190905 New Letting Created 08/15/2019
20190829 New Letting Created 08/15/2019
20190822 New Letting Created 08/01/2019
20190815 New Letting Created 08/06/2019
20190806 New Letting Created 08/05/2019
20190805 Letting Made Available 08/02/2019
(6 Activities)
What's New Table. What's New Table lists the last 50 activities that happened in regards to the lettings
July
Letting Proposal Activity Activity Date
20190722 Letting Made Available 07/22/2019
(1 Activity)
What's New Table. What's New Table lists the last 50 activities that happened in regards to the lettings
August
Letting Proposal Activity Activity Date
20190822 001 - C21235 Amendment Loaded 08/07/2019
001 - C21235 1 New Attachment - 21235rv1.pdf 08/07/2019
001 - C21235 16 Plan Sheets Added 08/07/2019
001 - C21235 New Proposal Added 08/01/2019
001 - C21235 1 New Attachment - C21235.pdf 08/01/2019
001 - C21235 324 Plan Sheets Added 08/01/2019
20190815 001 - C21258 Apparent Bids Updated; Letting: 20190815, Contid: C21258, Bidders: 08/15/2019
001 - C21258 New Proposal Added 08/06/2019
001 - C21258 1 New Attachment - C21258.pdf 08/06/2019
001 - C21258 1 New Attachment - 21258rv1.pdf 08/06/2019
001 - C21258 383 Plan Sheets Added 08/06/2019
001 - C21258 12 Plan Sheets Added 08/06/2019
001 - C21258 Proposal Alert Updated 08/06/2019
20190808 001 - C21258 Proposal Withdrawn 08/06/2019
(14 Activities)
What's New Table. What's New Table lists the last 50 activities that happened in regards to the lettings
July
Letting Proposal Activity Activity Date
001 - C21258 12 Plan Sheets Added 07/23/2019
001 - C21258 1 New Attachment - 21258rv1.pdf 07/22/2019
001 - C21258 Amendment Loaded 07/22/2019
(3 Activities)
What's New Table. What's New Table lists the last 50 activities that happened in regards to the lettings
August
Letting Proposal Activity Activity Date
20190905 002 - C21288 New Proposal Added 08/15/2019
002 - C21288 1 New Attachment - C21288.pdf 08/15/2019
002 - C21288 340 Plan Sheets Added 08/15/2019
20190808 002 - C22308 Apparent Bids Updated; Letting: 20190808, Contid: C22308, Bidders: 607A, 162A 08/08/2019
20190801 002 - C22501R Apparent Bids Updated; Letting: 20190801, Contid: C22501R, Bidders: 08/01/2019
002 - C22501R Apparent Bids Updated; Letting: 20190801, Contid: C22501R, Bidders: 905A, S3913, 1415A 08/01/2019
20190905 001 - C22580 New Proposal Added 08/15/2019
001 - C22580 1 New Attachment - C22580.pdf 08/15/2019
001 - C22580 219 Plan Sheets Added 08/15/2019
20190822 002 - C22771 New Proposal Added 08/01/2019
002 - C22771 1 New Attachment - C22771.pdf 08/01/2019
002 - C22771 250 Plan Sheets Added 08/01/2019
20190905 003 - C22795 New Proposal Added 08/15/2019
003 - C22795 1 New Attachment - C22795.pdf 08/15/2019
003 - C22795 277 Plan Sheets Added 08/15/2019
(15 Activities)
What's New Table. What's New Table lists the last 50 activities that happened in regards to the lettings
July
Letting Proposal Activity Activity Date
20190725 001 - C22843 Apparent Bids Updated; Letting: 20190725, Contid: C22843, Bidders: 1052A 07/25/2019
(1 Activity)
What's New Table. What's New Table lists the last 50 activities that happened in regards to the lettings
August
Letting Proposal Activity Activity Date
20190801 001 - C22906 Apparent Bids Updated; Letting: 20190801, Contid: C22906, Bidders: 1587, 607A 08/01/2019
20190805 001 - C23017 Apparent Bids Updated; Letting: 20190805, Contid: C23017, Bidders: 08/05/2019
20190829 001 - C23213 New Proposal Added 08/15/2019
001 - C23213 1 New Attachment - C23213.pdf 08/15/2019
001 - C23213 128 Plan Sheets Added 08/15/2019
20190806 001 - C23254 Apparent Bids Updated; Letting: 20190806, Contid: C23254, Bidders: 08/06/2019
001 - C23254 New Proposal Added 08/05/2019
20190805 002 - C23254 Proposal Withdrawn 08/05/2019
(8 Activities) More... Searching...