| Volumes are based on the total number of vehicles entering an intersection on an
average weekday, and are approximate due to the variability from year to year, month to
month, and day to day. Freeway ramp intersections with streets, were not considered for
this listing. Intersections are counted once every two to three years, and this list is
based on the most recent count available. Links in the first column (rank) of the table below will take you to that specific intersection. Links in the second and third columns (street names) will take you to an index for that arterial. |
| Rank | East-West | North-South | Approx. Volume |
|---|---|---|---|
| 1 | State Route 500 | Gher Rd. / 112th Ave. | 89,000 |
| 2 | State Route 500 | Thurston Way | 85,000 |
| 3 | Mill Plain Blvd. | Chkalov Dr. | 73,000 |
| 4 | State Route 500 | State Route 503 | 72,000 |
| 5 | State Route 500 | St. Johns Rd. | 64,000 |
| 6 | Fourth Plain Blvd. | Andresen Rd. | 59,000 |
| 7 | State Route 500 | 54th Ave. | 57,000 |
| 8 | State Route 500 | 42nd Ave. | 53,000 |
| 9 | Mill Plain Blvd. | 123rd/124th Ave. | 52,000 |
| 10 | 76th St. | State Route 503 | 51,000 |
| 11 | 78th St. | Highway 99 | 49,000 |
| 12 | Mill Plain Blvd. | 136th Ave. | 49,000 |
| 13 | Mill Plain Blvd. | Andresen Rd. | 44,000 |
| 14 | Mill Plain Blvd. | Hearthwood Blvd. | 41,000 |
| 15 | State Route 500 | NE 121st Ave. | 40,000 |
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