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

November 2021 Update

Snohomish County Public Works is wrapping up major construction work for 2021 on the Index-Galena Rd project between milepost 6 and 7. The project area remains closed through the end of construction. Flood repairs are on schedule for a 2023 reopening of the road.

Construction began in April to repair the final section of roadway that was heavily damaged during flood events in November 2006. A summary of work completed this year includes:

  • Old roadway and debris removal is 95 percent complete, including in-stream clean-up efforts.
  • Land clearing involving tree and rock removal is complete. Approximately 250 trees were cleared and salvaged logs will be used for onsite habitat restoration and U.S. Forest Service habitat restoration located elsewhere in the Mt. Baker Snoqualmie National Forest.
  • Earthwork including excavation and embankment for the new roadway is partially constructed. 
  • Construction of major structural elements is well underway: 
    • Crews completed construction on the vented ford box culvert. This armored culvert crosses through a historical rock debris slide area and conveys a stream underneath the road. It was built to be resilient against future sliding debris. 
    • Four six-foot diameter drilled shafts were installed to depths between 70 and 110 feet in the ground to support the future 180-foot bridge near mile post 6.9. The new bridge will provide a reliable crossing for travelers and improved passage for fish and wildlife.
    • A launch point will be provided near the bridge for river recreational users.  

There will be a winter shutdown and work will resume next spring.


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.


For More Information