Installation of 7 avalanche control towers along I-90 in King County. Towers will replace aging/decommissioned howitzer program to increase program operator and traveling public safety in winter conditions.
Location
5 towers on Granite Mtn and 2 towers on Denny Mtn in King County, WA. Upslope from Interstate 90 in known avalanche chutes between MilePost 50 and 52.
Project timeline
1
Scoping Start
08/01/2024
2
Decision
10/2024 (Estimated)
3
Implementation
06/2025 (Estimated)
NEPA / regulatory detail
| Categorical Exclusion | 32.2 (3), 36 Cfr 220.6(E)(3) |
| Special Authority | Not Applicable / Other |
| Notice and Comment Regulation | Not Subject to Regulations |
| Project Activity | Special Use Authorizations |
| WSDOT I90 Avalanche Control Towers | Decision Signed Date: 10/21/2024 |
| Forests | Mt Baker-Snoqualmie National Forest |
| Districts | Snoqualmie Ranger District |
| Legal Land Description | Not Applicable |