The 2022 Standard Specification book is mandatory for use on projects advertised on or after October 1, 2022. Non-CDOT employees will have to print and assemble this Specification book.
Construction Specifications
The 2021 Standard Specification book is mandatory for use on projects advertised on or after October 1, 2021 until September 30, 2022.
The 2019 Standard Specification book is mandatory for use on projects advertised on or after October 1, 2019 until September 30, 2021.
The 2017 Standard Specification Book is mandatory for use on projects advertised on or after October 1, 2017 but NOT after September 30, 2019.
The 2011 Standard Specification Book is mandatory for use on projects advertised after May 3, 2011 but NOT after September 30, 2017.
