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The Pioneer Widening and Discovery Drive Roundabout project has widened Pioneer Street to four lanes with multi-use paths and planter strips, constructed a new roundabout at Discovery Drive, and built N Discovery Drive to a new portion of Pioneer Canyon Drive.
The project also included the construction of 5 major culverts, upgraded water, sewer and storm utilities, and a joint utility trench.
PROJECT STATUS Updated January 9
Work is substantially complete on this major infrastructure project along Pioneer Street. The contractor is completing some additional work, including plantings and electrical in the area. Intermittent lane closures may occur during work hours, 7 AM to 5 PM.
Thank you to our community for your patience and flexibility throughout this high impact project.
The speed limit on Pioneer between Royle and 56th Place is currently 25 mph. When work wraps up, the temporary speed limit will be removed and return to 35 mph.
The City's Pioneer Widening and Discovery Drive Roundabout project is just one piece 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.
Union Ridge Town Center, anchored by Costco, construction N 56th Place, N 53rd Place and the eastern leg of Pioneer Canyon Drive.
Ridgefield Gateway, which includes McDonalds's, added a turn lane and other improvements to the north side (westbound direction) of Pioneer Street between I-5 and 56th Place. The developer also completed modifications to the Pioneer Street and Interstate 5 interchange to create additional lane capacity.
The map below shows all of the planned and anticipated infrastructure 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.
The Pioneer Widening and Discovery Drive Roundabout project has widened Pioneer Street to four lanes with multi-use paths and planter strips, constructed a new roundabout at Discovery Drive, and built N Discovery Drive to a new portion of Pioneer Canyon Drive.
The project also included the construction of 5 major culverts, upgraded water, sewer and storm utilities, and a joint utility trench.
PROJECT STATUS Updated January 9
Work is substantially complete on this major infrastructure project along Pioneer Street. The contractor is completing some additional work, including plantings and electrical in the area. Intermittent lane closures may occur during work hours, 7 AM to 5 PM.
Thank you to our community for your patience and flexibility throughout this high impact project.
The speed limit on Pioneer between Royle and 56th Place is currently 25 mph. When work wraps up, the temporary speed limit will be removed and return to 35 mph.
The City's Pioneer Widening and Discovery Drive Roundabout project is just one piece 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.
Union Ridge Town Center, anchored by Costco, construction N 56th Place, N 53rd Place and the eastern leg of Pioneer Canyon Drive.
Ridgefield Gateway, which includes McDonalds's, added a turn lane and other improvements to the north side (westbound direction) of Pioneer Street between I-5 and 56th Place. The developer also completed modifications to the Pioneer Street and Interstate 5 interchange to create additional lane capacity.
The map below shows all of the planned and anticipated infrastructure 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.
Pioneer Widening & 50th Place Roundabout Project Timeline
Design & Permitting - 2023
Pioneer Widening and Discovery Drive Roundabout has finished this stage
The project is currently in the preliminary design stage. The team is also working to obtain the required state and federal permits.
Final Design - Early 2024
Pioneer Widening and Discovery Drive Roundabout has finished this stage
The final design will be completed early in 2024.
Project Bid Open - Spring 2024
Pioneer Widening and Discovery Drive Roundabout has finished this stage
The project is expected to go to bid in the Spring of 2024.
Construction - June 2024-Fall 2025
Pioneer Widening and Discovery Drive Roundabout has finished this stage
Construction activity began in June 2024. Major construction was completed in December 2025.
Project Wrap Up - Winter 2025-2026
Pioneer Widening and Discovery Drive Roundabout is currently at this stage
Work is substantially complete. The contractor is completing some addition work in the area, including plantings and electrical. Traffic impacts are minimal, intermittent lane closures may occur.
