Construction Specifications

2021 Construction Specifications

The 2021 Standard Specification book is mandatory for use on projects advertised on or after October 1, 2021 until September 30, 2022.

2019 Construction Specifications

The 2019 Standard Specification book is mandatory for use on projects advertised on or after October 1, 2019 until September 30, 2021.

2017 Construction Specifications

The 2017 Standard Specification Book is mandatory for use on projects advertised on or 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.

2022 Construction Specifications

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.