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Northwest Traffic Volume - Ramp and Roadway Report

The Ramp and Roadway reports provide traffic volumes on major roadways and ramps in the Puget Sound area. The reports are put together by the Traffic Management Center (TMC) and published every year.

Beginning with the 2016 Ramp and Roadway report, we are following suit with many of our partner agencies to go paperless. However, if you would like a paper copy during this transition, contact us at: nwflow@wsdot.wa.gov.

Full 2016 Ramp and Roadway Report (5mb pdf)
The most recent version of the Ramp and Roadway Report.
Interstate: I-5I-405 | I-90

Full 2015 Ramp and Roadway Report (5mb pdf)
Ramp and Roadway report from 2015.

Ramp and Roadway Report Archive (1976-2014)
Ramp and Roadway reports dating from 1976.

Ramp and Roadway Data Station Reference Guide (3mb pdf)
The Data Station Reference Guide provides the names of each of our data stations. This information can save you time if requesting data from our sensor network.