News & Events

News & Upcoming Events

Posted on: March 31, 2023

5th Ave Improvements

5th Ave Improvements

As part of the 5th Avenue Road Widening Project, a roundabout will be installed at the intersection of 5th Ave and Porter Way, adding curb gutter and sidewalk on 5th Ave, and replacement of the Hylebos Creek Culvert. This summer the current Hylebos Creek culvert on 5th Avenue will be replaced with a new bottomless culvert that will reduce/eliminate the flooding that occurs in this area and provide new fish passage. This will require an extended road closure due to extensive underground utility re-routing and deep foundation support.

WHAT: 5th Ave. Widening Project

WHEN: Starting April 3, 2023 to early 2024.  Anticipated work hours are from 8:00 AM – 4:30 PM Mon-Fri

LOCATION: Intersection of S. 375th St and 5th Ave to Porter Way in Milton, WA.

5th Ave Project-April 10, 2023 Council Presentation


• Survey work to locate utilities and establish control points for construction.

• Parking impacts in work areas in the right of way.

• One-lane road closures & traffic control to accommodate the road widening.

• Unpaved gravel road base from April 11th to June 30th at the Hylebos Creek crossing on 5th Avenue.

• Access for school busses and emergency vehicles starting September 5th.

• Access to homes will be maintained at all times.

• FULL ROAD CLOSURE at the Hylebos Creek crossing upcoming in Summer 2023 – Additional information to come.

Questions? Contact Bob Carrasco with Sierra Construction Company Inc. via email

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