The Alderwood Mall Parkway project will address congestion and safety issues that negatively impact the community. The Parkway is a 3-lane Urban Major Collector that serves as an important north-south corridor, between SR 525 and 168th St. SW. The existing roadway within project limits has one through lane in each direction, a center turn lane with varying shoulder and intermittent sidewalks on the west side, leading to traffic congestion and queuing. The ADT on this road is 20,000 and there have been 23 accidents in the project limits within the last three years. This section of road creates a bottleneck with the adjacent 5-lane roadway section to the north and south, contributing to congestion during peak hours. The existing culverts for Box Spring Creek and two unnamed tributaries, are non-fish passable culverts and do not meet standard. Additionally, the lighting along this corridor is inconsistent.
Projects — TIB Project Information
TIB Project Information
Snohomish County's Alderwood Mall Parkway
8-1-031(018)-1
8-1-031(018)-1
Alderwood Mall Parkway
SR 525 to 168th St SW
FY 2025 Urban Arterial Program
Current Phase : Design
Total TIB Funding : $4,500,000
County: Snohomish | Legislative District: 21 | Project Length: 0.57 | TIB Engineer: Greg Armstrong | Last Payment Date:
Project Information
| Lead Agency | SNOHOMISH COUNTY |
| Funding Year | 2025 |
| Program | UAP |
| Current Phase | Design |
| Legislative District | 21 |
| Congressional District | 1 |
| Federal Route Number | 2579 |
| Project Length | 0.57 mi. |
| ADT | 20,000 |
| Functional Class | Collector |
| Type of Work | Major Widening |
| Project Contact | Ellora Larson |
| Contact Email | Ellora.Larson@snoco.org |
| TIB Engineer | Greg Armstrong |
| Last Payment Date | |
| Cultural Resource Assessment | Section 106 |
Project Schedule
| Target Date | Actual Date | |
|---|---|---|
| Project Selection Date | 12/01/2023 | |
| Delayed Project Date | 07/01/2028 | |
| DAHP Assessment Date | ||
| Predesign Approval | ||
| Design Approval | 02/01/2024 | 12/18/2023 |
| Bid Auth. Approval | 12/31/2025 | |
| Construction Approval | 02/27/2026 | |
| Project Closeout | 12/31/2027 | |
| Audit Date | ||
| Withdrawn Date |
Project Funding
| TIB Funds | Project Costs | |
|---|---|---|
| Environmental Study | 0 | 0 |
| Design Study | 0 | 0 |
| Total Predesign | 0 | 0 |
| Special Study | 0 | 0 |
| Design | 0 | 0 |
| Right of Way | 150,000 | 536,183 |
| Total Design | 150,000 | 536,183 |
| Construction Engineering | 567,400 | 2,037,300 |
| Construction Contract | 3,782,600 | 13,582,000 |
| Other Construction | 0 | 0 |
| Total Construction | 4,350,000 | 15,619,300 |
| Total TIB Funding | 4,500,000 | 16,155,483 |
Local Funding Partners
| Funding Amount | Percent | |
|---|---|---|
| SNOHOMISH COUNTY | 6,075,483 | 37.6% |
| WSDOT Funding | 0 | 0.0% |
| STP | 2,580,000 | 16.0% |
| PWB | 3,000,000 | 18.6% |
| Total Local Funding | 11,655,483 | 72.2% |
Project Description
The project will improve traffic flow, capacity, and safety for motorists, pedestrians, and bicyclists by widening the roadway from three to five lanes. It will include two through lanes in each direction with a center two way turn lane continuous curb and gutter raised bike lane (providing a physical separation) and sidewalks on both sides with ADA compliant curb ramps at all designated crossing. This will align with the five-lane road configuration to the north and south thus eliminating the bottle neck in this section of the corridor. The traffic signal upgrades and improvements to the intersection at the SR 525 NB On/Off Ramps will increase capacity and improve travel times at this intersection. Storm water conveyance and water quality treatment facilities will be developed as part of this project. Three fish bearing culverts will be upgraded to Box culverts to meet the current standards to ensure fish passage.Low impact illumination will be installed throughout the corridor.
Existing Condition
Project Benefits
- Improves safety;
- Improves mobility;
- Relieves congestion;
- Removes ADA barriers;
- Builds multimodal facilities
Project Pictures
No images available.
Project Delays
| Delay Type | Resolution Date | Comments |
|---|---|---|
No delayed project history. |
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