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Construction Specifications

CDOT's Headquarters and Region 1 building are at 2829 W. Howard Place, Denver, CO 80204. Please update this address in all documents that contain our former address (4201 E. Arkansas Ave. Denver, CO 80224). Thank you.
2019 Construction Specifications

The 2019 Standard Specification book is mandatory for use on projects advertised after October 1, 2019. (This is to notify all holders of Standard Special Provisions that CDOT will not publish a 2020 edition of the Standard Specifications for Road and Bridge Construction. The 2019 edition remains in effect until further notice.)

2017 Construction Specifications

The 2017 Standard Specification Book is mandatory for use on projects advertised after October 1, 2017 but NOT after September 30, 2019.

2011 Construction Specifications

The 2011 Standard Specification Book is mandatory for use on projects advertised after May 3, 2011 but NOT after September 30, 2017.


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