Factoria Boulevard Stormwater Conveyance

Header Image
Flooding during August 12-13, 2014 storm

The Factoria Boulevard Stormwater Conveyance Improvements project will improve stormwater infrastructure to reduce the risks of flooding during heavy storms in the Factoria-Richards Creek drainage basin.

The city will replace a segment of stormwater pipe with a larger one along the northbound lanes of Factoria Boulevard Southeast, next to the Factoria Village commercial area. The city will also install a concrete box to hold stormwater, which will drain into a modified Richards Creek Inlet channel.

Flooding during August 12-13, 2014 storm

Why is this construction needed?

Flooding is a recurrent event in the Factoria-Richards Creek drainage basin during major storms. In 2014, a heavy storm on Aug. 12-13 inundated Factoria Boulevard with nearly 4 feet of water. Businesses were flooded, streets were inaccessible and the community was significantly disrupted.

These kinds of storms have increased in frequency in the last decade, and may continue to increase as a result of climate change. If stormwater infrastructure improvements are not made, the current storm drainage system’s limited capacity to convey stormwater during intense storms may result in flooding of Factoria Boulevard, which would significantly disrupt the flow of traffic in the region, causing economic disruption to the many businesses in this area.

The city is committed to making sure another large flooding event does not happen again in this area.

Where is the project located?

The project is located along Factoria Boulevard between Southeast 38th and 36th streets, south of Interstate-90. Project work will also include a portion of Richards Creek, along the east side of Factoria Boulevard and south of Southeast 36th Street.

Factoria Blvd Stormwater Conveyance Project Map

When will this work take place?

The anticipated project schedule outlined below:

  • 2019-2020: Alternatives analysis and pre-design
  • 2021: Design
  • Early 2022: Pre-construction
  • Spring/Summer 2022: Begin construction
  • Summer 2023: Complete construction

How will the area be impacted during the project?

The city recognizes that project construction will impact those who live and work in the area, as well as those who travel through it, and is continuously working to minimize disruption to the extent possible. The city will provide regular communications and resources throughout the process and work to support the needs of those affected by the project.

More detailed information and communication about specific impacts will come as the project nears construction. A few areas of known impact are outlined below:

Vehicle Traffic 

The construction phase of this project will impact traffic through the project area, and those traveling through will likely experience changes in normal traffic patterns. The project team will adhere to City of Bellevue codes and standards to minimize negative impacts while maintaining safety at all times. While some traffic lanes may be closed during the project, the City does not intend to fully close any roads.

Bus Routes

The two King County Metro bus stops in the project area will be relocated for the duration of construction. The city will coordinate with King County Metro to minimize impacts to transit service and determine the new location for the bus stops.

Pedestrian Traffic

It is anticipated that the sidewalk on the east side of Factoria Boulevard, between Southeast 38th Street and the Southeast 3600 block, will be impacted for most of the project. The city plans to safely detour pedestrians to the sidewalk on the west side of the roadway at both locations. The city will provide a safe detour route that meets standards set by the Americans with Disabilities Act (ADA).

How will the city share information about the project?

The city will use multiple channels to communicate important information throughout the project, including this project website, mailed notices, online public meetings, and potentially in-person meetings (pending COVID-19 conditions). Please subscribe to the project website for updates and look for a mailed notice soon.

Receive email or text alerts about progress on this project.

For more information about the project, please contact:

Birol Shaha, Senior Utilities Engineer

To meet with city staff regarding this project, please contact:

Jessica Guthrie, Utilities Public Information Officer

Help in other languages

Residents who speak the following languages may call a toll-free number for more information about this project.

  • Español (Spanish) 1-844-590-8948
  • 廣東話 (Cantonese) 1-844-537-0364
  • 普通话 (Mandarin) 1-844-590-8945
  • 한국어 (Korean) 1-844-537-0365
  • ਪੰਜਾਬੀ (Punjabi) 1-844-590-8946
  • Русский (Russian) 1-844-590-8947