Pioneer Widening and Discovery Drive Roundabout
The City's Pioneer Widening and Discovery Drive Roundabout project will widen Pioneer Street, construct a new roundabout at Discovery Drive, and build N Discovery Drive to a new portion of Pioneer Canyon Drive. The project also includes the construction of 5 major culverts, upgraded water, sewer and storm utilities, and a joint utility trench.
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 N Discovery Drive to an extension of 56th Place. 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.
PROJECT STATUS
(updated October 6)
Over the next few weeks, Pioneer Street will look less like a construction zone and more like a welcoming arterial roadway. The contractor will be constructing splitter islands at the new roundabout, 53rd Place and the west end of Pioneer. Sidewalks will be prepped and poured in multiple locations, street lighting will be stood up and landscaping will be installed. Final paving, scheduled for the end of September, will open up the widened roadway to four lanes of travel.
Pioneer Street - OPEN (single lane each direction)
N Discovery Drive - OPEN
N 53rd Place - CLOSED
Shoulder work, lane shifts and intermittent flagging should be expected on Pioneer Street between Royle Road and 56th Place through September. Summer flagging hours: 8 AM to 3 PM
Striping Closures on Pioneer Street - October 7
On Tuesday, October 7, the city’s contractor is closing segments of Pioneer to complete roadway striping on the Pioneer Widening Project. All striping work is weather dependent and subject to change, a ground temperature of 50 degrees and rising is required. Please be patient and pay close attention to signage when traveling through the area this week.
- 4 – 6 :30 AM: Flagging at 56th/Pioneer Roundabout. Pavement marking removal in the 56th Place/Pioneer Street roundabout.
- 9 AM: Westbound Pioneer Closed, 56th Place to Royle Road. WB Pioneer will be closed for 2-3 hours to stripe the long lines on WB Pioneer. Use detour. View WB Closure/Detour Map
- Mid-Morning (after 10 AM): Eastbound Pioneer Closed, Royle Road to 56th Place. EB Pioneer will be closed for 2-3 hours to stripe the long lines on EB Pioneer. Pioneer will be fully open by 3 PM. Use detour. View EB Closure/Detour Map
- Early-Afternoon to Mid-Afternoon: 53rd and Discovery Drive Alternating Closure. 53rd Place will open for a short period in the afternoon to maintain two points of access while Discovery Drive/Pioneer Canyon Drive are striped. Please pay close attention to signage.
- 8 PM:Flagging at 56th/Pioneer Roundabout. Permanent striping will be completed in the 56th Place/Pioneer Street roundabout using flaggers. The yellow delineators in the roundabout will be removed and will not be replaced.
Wednesday and Thursday: Flagging with up to 15-minute delays will be in place throughout the project area on Wednesday, October 8 (10 AM to 3 PM) and Thursday, October 9 (9 AM to 3 PM) to complete striping at the Discovery Drive and Pioneer Street roundabout, and any remaining symbols throughout the project.
After striping, the contractor will need to continue to keep one lane in either direction closed through the month to complete concrete work, landscaping, streetlights and other project finish work. The new roundabout at Discovery Drive and Pioneer Street will continue to be used as through lanes until the center area is no longer a work zone.
Discovery Drive Open, N 53rd Place Closed
N 53rd Place at Pioneer Street is closed for construction work, including sidewalks, a splitter island and utility trench. Discovery Drive is open, keeping two ways open to access area businesses. The city's contractor may alternate closures between 53rd Place and Discovery Drive over the next couple weeks as work requires, in order to maintain two access routes between Pioneer Street and the businesses at all times. Local signage will be adjusted to reflect the current access at all times.
Business access to Mountain View Dental, Ridgefield Physical Therapy and iQ Credit Union will remain available at all times.
- 56th Place and Pioneer Street Roundabout: Designated right-turn lane from westbound Pioneer Street onto N 56th Place and temporarily closure of the northbound exit of the 56th Place and Pioneer Street roundabout to streamline traffic in the roundabout. These changes will remain in place until there are two lanes open in each direction through the Pioneer Widening project. View map (PDF)
- Check before you go! Visit our Traffic Page for live cameras at the project area.
Please remember that the speed limit on Pioneer between Royle and 56th Place is 25 mph, at all times, not just during construction hours.
Thank you for your continued support and patience throughout this project.
View and Sign Up for Traffic Alerts
Section 1: N Discovery Drive connect to Pioneer Canyon Drive west segment |
Preliminary road opened to traffic October 4, 2024. |
Section 2: N 53rd Place and Pioneer Street Intersection, Discovery Drive Roundabout, Widening west to Discovery Drive |
Expect intermittent flagging, shoulder work and potential lane shifts as work requires to complete "behind the curb" work such as illumination, sidewalk, landscaping. |
Section 3: Pioneer Widening, 53rd to 56th Place |
Expect intermittent flagging, shoulder work and potential lane shifts as work requires to complete "behind the curb" work such as illumination, sidewalk, landscaping. |
Section 4: Pioneer Widening Royle Road to Discovery Drive |
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Section 5: Pioneer Canyon Drive, west leg |
This western leg of Pioneer Canyon Drive will connect the future Ridgefield Community and Recreation Center to Pioneer Street. |
City Project
Pioneer Street | This project will widen Pioneer Street to a four-lane section from Rosauers to the 56th Place roundabout. The new segment of Pioneer will include two travel lanes and a shared use path, separated from vehicles by a planter strip, in either direction. |
Roundabout | A new roundabout will be constructed at Discovery Drive. |
Discovery Drive | N Discovery Drive will be built to connect to a new east-west parallel route, Pioneer Canyon Drive, being built by the developer of Union Ridge Town Center/Costco. This segment of Pioneer Canyon Drive will connect Discovery Drive to N 56th Place, which was built by the Union Ridge Town Center developer. |
Pioneer Canyon Drive | The City project will include a short western leg of Pioneer Canyon Drive at Discovery Drive, to provide access to the future Recreation and Community Center. |
Developer Projects
The construction of N 56th Place, N 53rd Place and the eastern leg of Pioneer Canyon Drive was completed by the developer of Union Ridge Town Center. The developer's project included the construction of a new roundabout at N 56th Place 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 Place. The developer also completed modifications to the Pioneer Street and Interstate 5 interchange to create additional lane capacity.
Project Strip Map
Coordination
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.
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.