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TIB Project Information

King County's Redmond Ridge Dr NE Roundabout

8-1-017(073)-1

8-1-017(073)-1
Redmond Ridge Dr NE Roundabout
NE Alder Crest Dr

FY 2024 Urban Arterial Program
Current Phase : Construction
Total TIB Funding : $907,859

County: King   |   Legislative District: 45   |   Project Length: 0.26   |   TIB Engineer: Greg Armstrong   |   Last Payment Date: 05/17/2024

Project Information

Lead Agency KING COUNTY
Funding Year 2024
Program UAP
Current Phase Construction
Legislative District 45
Congressional District 1
Federal Route Number 2261
Project Length 0.26 mi.
ADT 6,960
Functional Class Minor
Type of Work Traffic Control
Project Contact Jim Ishimaru
Contact Email Jim.Ishimaru@kingcounty.gov
TIB Engineer Greg Armstrong
Last Payment Date 05/17/2024
Cultural Resource Assessment Not Required

Project Schedule

  Target Date Actual Date
Project Selection Date   12/02/2022
Delayed Project Date 01/01/2024  
DAHP Assessment Date  
Predesign Approval
Design Approval 02/01/2023 01/23/2023
Bid Auth. Approval 02/28/2023 02/27/2023
Construction Approval 06/14/2023 06/28/2023
Project Closeout 04/01/2025
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Withdrawn Date  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 0 0
Total Design 0 0
     
Construction Engineering 193,309 336,000
Construction Contract 773,236 1,387,869
Other Construction 0 0
Total Construction 966,545 1,723,869
     
Funding Surplus - 58,686  
Total TIB Funding 907,859 1,723,869

Local Funding Partners

Funding Amount Percent
KING COUNTY 16,010 0.9%
WSDOT Funding 0 0.0%
2018 Transportion Budget  800,000 46.4%
 
 
 
 
 
 
 
Total Local Funding 816,010 47.3%

Project Description

The installation of a roundabout will increase the safety of this intersection and support the continued growth of the Redmond Ridge community and business park by Reducing vehicle travel speeds and points of conflict enhancing and installing pedestrian crossings and bicycle routes with sidewalks, bike ramps, and pedestrian refuges in splitter islands at the center of the roadway and, improving operation for all modes of travel.

Existing Condition

This project is needed to facilitate traffic flow and safety in an area with growing traffic concerns and business/light industrial uses near a public park and middle school. The intersection is currently controlled by a two-way stop on the east and west legs. The east and west traffic must compete with heavy southbound and northbound traffic on Redmond Ridge Drive NE during the morning and afternoon commutes. Additionally, the intersection only has one crosswalk, on the south leg of Redmond Ridge Dr. NE. The project will provide an improved intersection level of service for the Redmond Ridge Community. The area has seen increasing growth, with the recent addition of Timberline Middle School, the expanding SpaceX facility, and an expansion in other light industrial/warehouse business facilities, as well as numerous trails, ball fields, and parks. SpaceX is an Aerospace manufacturer and space transport company with over 10,000 employees nationwide. The Redmond location is one of nine offices in the U.S. As the business park and community continue to develop, vehicle delays at the intersection will increase significantly. This project will improve traffic flow and neighborhood pedestrian safety for area residents, including children traveling to the nearby park and middle school.

Project Benefits

  • Improves safety;
  • Improves pedestrian safety

Project Pictures

Project Delays

Delay Type Resolution Date Comments

No delayed project history.

Project Payments