Typical traffic control plans (TCP) are generic in nature and not intended to satisfy all work zone conditions. Typical TCPs may be modified and have been furnished as a guide to be used with good engineering judgment and familiarization with work zone policy and guidance. Additional project and/or site-specific traffic control plans may be needed for unique conditions or roadway configurations.

Traffic control plans must be accepted and reduced work zone speed limits approved by the appropriate public agency or agencies having jurisdiction. For work zone speed limit policy, see Project Delivery Memo #19-01 (pdf 132 kb).

Typical TCPs are currently undergoing an update to include a full-color Microstation file with PDFs in both color and grayscale. Grayscale now serves as the “black and white” version. For Typical TCPs not yet updated, the original black and white version is still available.

A significant update to the Microstation work library is underway for work zone signs, tables, legends and symbols and is expected by 2021. These updated work zone cells will be installed automatically on WSDOT staff computers; however, consultants and local agencies must manually install them. All users must still manually update cells periodically to avoid using outdated cells, especially on traffic control plans over a year old.

• Computer Aided Engineering - Resource Updates
• Computer Aided Engineering Technotes

Afterwards, Typical TCPs will be updated to include a full-color Microstation file with PDFs in both color and black-white.  For Typical TCPs not yet updated, the original black and white version is still available.  Over time, new Typical TCPs will be added.

For comments or further information contact subject matter experts at hqworkzone@wsdot.wa.gov.

The zip files contain the .dgn files. 

Section 1-99 

Section 100: Freeways