As construction on the State Route 18/Interstate 90 interchange project reaches the expected finish line in 2025, there’s another piece to the puzzle.
During interchange construction, traffic often builds up or closures occur, causing a ripple effect extending throughout the surrounding region and impacting over 4,000 commuters daily.
The congestion also impacts freight travel through the SR-18 and I-90 corridors from Eastern Washington to the Port of Seattle and Tacoma, leading to challenges extending beyond King County, said Reagan Dunn, vice chairman of the King County Council, whose district includes the Enumclaw area. The Snoqualmie Valley Record reported that freight trucks make up 20% of traffic through both corridors.
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