Index-Galena Rd: MP 6.4-6.9 - Flood Damage Repair

December 2022 Update

Snohomish County Public Works wrapped up construction for the year in November as planned. Crews resumed work last March, moving forward with construction of the new roadway and bridge between milepost 6 and 7. Despite dry and smoky conditions from area wildfires in late summer, crews completed major elements to keep the project on track for a fall 2023 reopening. The road remains closed to the public through the end of construction.

A summary of work completed in 2022 includes:

  • Four of five geosynthetic retaining walls were completed.
  • Bridge abutments and the 180-foot superstructure span have been constructed.  
  • All 15 culverts are in place.
  • Major excavation and rock blasting have been completed.
  • 90% of the elevated roadway embankment has been constructed.
  • Large, armored rock diversion berms have been constructed near the bridge and the vented ford box culvert.  
  • Many of the roadside slopes have been stabilized and planted.  
  • The majority of onsite mitigation features and engineered log jams have been installed. 
  • Remaining asphalt pavement and concrete rubble have been removed from the side channel.

Construction is expected to resume in April 2023. As a reminder, the project area remains closed to the public through the end of construction. Target opening date is fall 2023.


The county has repaired 10 of the 11 originally damaged areas from the 2006 heavy rains that severely impaired Index-Galena Road. Currently, milepost 6.4 to 6.9 is the only area left to repair and remains closed to all public access. This portion of road was considered a total loss with significant portions of pavement, road bed, and culverts damaged by the flooding. 

New road work includes nearly one mile of reconstructed roadway, 16 culverts, one reinforced concrete box culvert, a new 180-foot long bridge, geosynthetic reinforced slopes, structural earth walls, and removal of the abandoned road and other man-made materials.

The project will restore a route that maintains essential travel and emergency services on Index-Galena Road and reintroduces recreational access to parts of the Mt. Baker Snoqualmie National Forest and the Wild Sky Wilderness area. To learn more about project plans and benefits, please read the 2021 Fact Sheet.

Traffic Impact

Index-Galena Road near the project site remains closed through construction. Seasonal access is available to the east end of Index-Galena Road, via US 2 to Beckler River Road to Jack’s Pass. From the east, the road opens to National Forest lands for general recreation, camping and mineral claims along the North Fork Skykomish, Salmon Creek and Silver Creek drainage basins. Troublesome Creek and San Juan Campground are also accessible from the east. 

Jack Pass Maintenance

Snohomish County is in a ten-year agreement with the USFS to help maintain Beckler River Road which includes the road through Jack Pass. Both agencies meet annually to discuss repairs and maintenance needed to keep the road in working condition. The road through Jack Pass will remain unplowed and closed during the winter months. While seasonal conditions vary from year to year, the pass typically is open to use in late May through early November. 


Funding is provided by the Federal Highway Administration Emergency Relief Funds, Federal Highway Administration Federal Lands Access Program Funds, Washington State County Road Administration Board (CRAB) Rural Arterial Program Funds, and Snohomish County Road Funds.

Environmental Review Documents

NOTICE OF AVAILABILITY OF THE FINDING OF NO SIGNIFICANT IMPACT - The Federal Highway Administration (FHWA) signed a determination of Finding of No Significant Impact (FONSI) on April 14, 2017. This finding is based upon the evaluation of the Environmental Assessment (EA) as issued on September 19, 2016, and thoughtful consideration of public and agency input, including comments received at the public hearing on October 12, 2016 for the Index-Galena Road Milepost 6.4-6.9 project.


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