Transportation Improvement Board
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 Projects — TIB Funding Cycles

FY 2024 UAP Selections

King County
Redmond Ridge Dr NE Roundabout
NE Alder Crest Dr
TIB Award Amount
$966,545
Region: Puget Sound   |   Legislative District: 45   |   Length: 0.26 mi. FY 2024 Urban Arterial Program (UAP)

Existing Conditions

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 Funding

  TIB Funds Local Funds Total Costs
Design 0 0 0
Right of Way 0 0 0
Construction 966,545 800,250 1,766,795
Project Totals $966,545 $800,250 $1,766,795

Local Match

TIB Participation Local Match Minimum Local Match
54.7% 45.3% 20%

Description of Improvements

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.