SR 530 - Trafton Creek and Schoolyard Creek - Fish Passage - Bypass

A map showing the SR 530 bypass at Trafton Creek.

Summer 2020 SR 530 bypass

Starting May 11, 2020, we will build a bypass on SR 530 between east Arlington and Oso that will allow crews to replace an old, narrow culvert for Trafton Creek that goes under the highway east of Arnot Road. In summer 2019, we replaced the culvert for Schoolyard Creek under SR 530.

Trafton Creek (east of Arnot Road)
From late June through early October, travelers will use another single-lane bypass, controlled by signals, to get around the work zone.

Traffic effects
Work to build the bypass will cause only minor delays when crews work near SR 530. Once the bypass is in use, people traveling on both directions of SR 530 between Arlington and Oso should plan for 5- to 10-minute delays from late June to early October.