Major Intersections
| County | Location | Mile | Destinations | Notes |
|---|---|---|---|---|
| Pierce | Fife | 0.00 | I-5 – Tacoma, Seattle | Interchange |
| 0.18 | Pacific Highway – Fife | Former SR 99 south | ||
| Milton | 1.62 | Porter Way | Former SR 514 | |
| King | Federal Way | 4.49 | SR 18 east (South 348th Street) to I-5 – Auburn, North Bend | |
| 7.72 | SR 509 south (South Dash Point Road) – Dash Point State Park | South end of SR 509 overlap | ||
| 8.83 | 16th Avenue South – Saltwater State Park | Former SR 509 north | ||
| Kent | 11.84 | SR 516 (SR 509 north) to I-5 – Des Moines, Kent | North end of SR 509 overlap | |
| Des Moines | ||||
| Seatac | 15.11 | South 182nd Street – Sea-Tac Airport | ||
| 16.73 | SR 518 to I-5 / I-405 – Burien, Renton | Interchange; south end of gap | ||
| Tukwila | ||||
| 19.33 | SR 599 south to I-5 | Interchange; north end of gap | ||
| South end of freeway | ||||
| 19.98 | West Marginal Place South | Northbound exit and entrance | ||
| Seattle | 21.17 | Des Moines Drive, 14th Avenue South | ||
| 21.75 | South Cloverdale Street | Northbound entrance only | ||
| 22.37 | South Kenyon Street – South Park | No northbound exit | ||
| North end of freeway | ||||
| 22.40 | South Holden Street – South Park Industrial Area | |||
| 22.79 | SR 509 south / West Marginal Way Southwest – Burien | Interchange | ||
| First Avenue South Bridge over the Duwamish River | ||||
| 23.14 | To I-5 / Michigan Street | Interchange | ||
| South end of freeway | ||||
| 24.82 | Spokane Street – West Seattle | Northbound exit and southbound entrance | ||
| 25.40 | West Seattle Bridge – Harbor Island | Southbound exit and northbound entrance | ||
| 27.03 | Safeco Field, Ferries | Southbound exit and northbound entrance | ||
| 27.58 | Seneca Street | Northbound exit and southbound entrance | ||
| 28.30 | Western Avenue | |||
| 28.72 | Denny Way – Downtown Seattle | Southbound exit and northbound entrance | ||
| North end of freeway | ||||
| 29.13 | Broad Street | Interchange; no northbound exit | ||
| 29.13 | To I-5 / Mercer Street | Interchange; no southbound exit | ||
| 29.25 | Seattle Center (Valley Street) | Southbound exit and entrance | ||
| 30.45 | Queen Anne Drive | Interchange | ||
| Aurora Bridge over Lake Union | ||||
| 31.10 | Bridge Way, North 39th Street | Interchange | ||
| 31.74 | Green Lake Way, North 46th Street | Interchange | ||
| 32.57 | North 65th Street, West Greenlake Way North | Interchange | ||
| 36.75 | SR 523 east (North 145th Street) to I-5 | |||
| Shoreline | ||||
| 39.87 | SR 104 to I-5 – Edmonds, Kingston Ferry, Mountlake Terrace, Lake Forest Park | Partial Interchange | ||
| Snohomish | Edmonds | |||
| Lynnwood | 43.12 | SR 524 (196th Street Southwest) | ||
| 46.90 | SR 525 to I-5 south / I-405 south / Alderwood Mall Parkway – Mukilteo, Whidbey Island Ferry | Partial Interchange | ||
| Everett | 51.67 | I-5 – Seattle, Marysville | ||
| 51.67 | SR 526 west / SR 527 south (19th Avenue Southeast/Bothell-Everett Highway) – Mukilteo, Whidbey Island Ferry | |||
| 51.67 | Broadway | Continuation beyond SR 526/SR 527 | ||
Read more about this topic: Washington State Route 99
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