Corridor sketch initiative

Corridor sketch summaries describe the functionality and features of our state highways. Each summary has information that guides highway improvements.

The Corridor Sketch Status brochure (pdf 726 kb) describes the program and its accomplishments.

The User Guide for Corridor Sketch Summaries (pdf 428 kb) provides a brief description of information presented in each summary along with potential strategies to address congested areas of the highway.

Corridor sketch summaries

 

Corridor Sketch summary map

 

View Corridor Sketch Summary map

Summary reports by region

Eastern Region

North Central Region

Northwest Region

Olympic Region

South Central Region

Southwest Region

Contact:

For questions regarding specific corridors, please refer to the last page of the corresponding Corridor Sketch Summary (pdf link) for contact information.

Traction tires are a special type of tire

manufactured with at least 1/8 of an inch tread. Traction tires are usually marked with a mountain/snowflake symbol, the letters M+S or “All Season.”

Carry chains, practice before leaving

Requiring chains keeps traffic moving during storms rather than closing a pass or roadway.

Prep your car. Fill up your gas tank,

pack jumper cables, ice scraper, warm clothing, snacks and water.