| Interstate 405 | ||||
|---|---|---|---|---|
| Renton Freeway | ||||
| Route information | ||||
| Auxiliary route of I‑5 | ||||
| Defined by RCW 47.17.595 | ||||
| Maintained by WSDOT | ||||
| Length: | 30.30 mi (48.76 km) | |||
| Existed: | 1964 – present | |||
| Major junctions | ||||
| South end: | 
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| North end: | 
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| Location | ||||
| Counties: | King, Snohomish | |||
| Highway system | ||||
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SR 167 in Renton
SR 900 in Renton
I‑90 in Factoria
SR 520 in Bellevue
SR 908 in Kirkland