We at CDOT value your ideas and opinions.  If you have any questions, concerns, or comments about the web site or any other service we provide, please send us an email. (Please note that if your email is regarding a city or county street, you will need to contact that city or county directly. CDOT maintains the state highway system only.) Thank you.

Send us an e-mail.

U.S. Mail can be directed to:

Colorado Department of Transportation
4201 E Arkansas Avenue
Denver, CO 80222
303-757-9011

Office hours:
8 a.m. to 5 p.m., Monday - Friday

• CDOT frequently called phone numbers

• CDOT Roster of key personnel (PDF)

• CDOT Topical Telephone Directory (PDF)