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Washington Transportation Plan Data Library

Information about the state’s population, its economy, and the conditions and uses of its transportation systems and facilities are essential for the preparation of the WTP update and are matters of great interest to those who will contribute to and use the plan.

The Data Library has begun to capture and present this information. It will continue to grow. The picture it presents also can be shaped and refined by others' questions and suggestions – including suggestions for additional material that the Data Library should include.

Here are some of the topics on which the Data Library already contains information. This listing will change from time to time as more information is added.