I5 to Royle Road Transportation Improvements

The City's Pioneer Widening and 50th Avenue Roundabout project will widen Pioneer Street, construct a new roundabout at 50th Avenue, and build 50th Avenue north to a new portion of Pioneer Canyon Drive.

When completed, there will be a four-lane roadway along Pioneer Street from just west of Royle Road to I-5, and a new east-west collector roadway (Pioneer Canyon Drive) connecting 50^th Avenue to an extension of 56^th Avenue. This will provide two parallel routes to handle current and future traffic in the area.

Traffic between Interstate 5 and Royle Road is expected to increase as new commercial development planned in the area is constructed and opened. While addressing the necessary improvements for traffic capacity and flow, the City has an opportunity to design the area to be more pedestrian and cyclist friendly.

City Project

Developer Projects

As demonstrated on the map below, the construction of N 56th Ave, N 53rd Ave and the eastern leg of Pioneer Canyon Drive will be completed by the developer of Union Ridge Town Center. This project will include the construction of a new roundabout at N 56th Ave and Pioneer Canyon Drive. The developer of Ridgefield Gateway will be adding a turn lane and other improvements to the north side (westbound direction) of Pioneer Street between I-5 and 56th Avenue.

The developer will also construct modifications to the Pioneer Street and Interstate 5 interchange that will create additional lane capacity. This design is currently being reviewed with Washington State Department of Transportation (WSDOT). The improvements will accommodate the expected increase in traffic to the area.

These improvements are expected to be completed in 2024.

Project Strip Map

Click to view full size

Coordination

The City's Pioneer Widening/50th Avenue Roundabout project is just one piece of of a group of transportation infrastructure improvements planned for the area. Several projects will be completed by private developers, paying for the increased infrastructure needs their projects will create.

The map below shows all of the projects, color coded by whether the project will be done by the City, or by a Developer. This is a conceptual map and does not show exact road alignments.

Click to view full size

The City’s Pioneer Widening/50^th Avenue Roundabout project team has been closely working with the teams for Union Ridge Town Center/Costco, Mountainview Dental, and Ridgefield Gateway to ensure all utilities and road improvements are coordinated both in design and in timing. Some of the developer infrastructure including roads and utilities are underway, and there has been a continuous coordination process between those contractors, the City and Washington State Department of Transportation (WSDOT).

Next Steps

The City’s project is currently in the preliminary design stage as well as working to obtain the needed state and federal permits. The final design will be completed early in 2024 with the project expected to go to bid in the Spring of 2024. The project is expected to be completed by the end of 2024 before Costco’s opening.