Spring Road Clearing
Road Opening ProcessThe park highway will open to through traffic once the final section between Bumpass Hell and Devastated Area is cleared, rockfalls are cleared, and all lingering ice is melted. The road opening process may be delayed by late snow storms as well as other factors including:
2017 Road Clearing Operator LogLog updates are posted when reports are received from operators in the field. The latest update may not reflect the current status. The road crew works Monday through Thursday, 10 hours per day.
April 4 - Tuesday, Snow removal from the Manzanita Lake Campground loops started today. This will likely take the remainder of this week to complete. Weather permitting, next week we will start on the main road towards Devastated area and hope to have it completed by around the 21st. If all goes well and the weather works with us, we hope to start at the southwest entrance at the Kohm Yah-mah-nee Visitor Center around May 1.
April 18 - Snow clearing to Devastated Area from Manzanita Lake was relatively smooth, with just a couple of snowstorms delaying progress slightly. The average snowdepth was about 5 feet. The road will open to the Devastated Area soon pending some parking area clean-up and restroom preparation. Also, after clearing a large tree which fell blocking the road to the Manzanita Lake boat launch, the parking lot and launch are now open. Stay tuned...
May 5 - After staging equipment to get ready for clearing at the southwest entrance from the Visitor Center, we began on Wednesday May 3. We started digging through about 11 feet of snow. In two days, we only were able to clear about 200 yards. We will resume Monday morning...
May 21 - On 5/12 the crew rounded Emerald point and gained the first views of Lassen Peak. Check out the Facebook Live recording of us at work! For the week of 5/15, the crew paused work on the park highway to clear the Warner Valley road (which is closed to vehicles at the park boundary until the road dries sufficiently) and assist with seasonal water treatment operations. We will be returning to Emerald point on Monday, 5/22.
When Will the Highway Open to Through Traffic?
The park highway encompasses 30 miles of stunning views through twisty hair pin corners, high elevations and steep grades. To attempt road clearing throughout winter would be impossible and extremely hazardous for plow operators and drivers. The park highway traverse avalanche prone slopes with up to 2,000 foot drops and can hold a snowpack up to 40 feet deep. With the park's high elevation and exposed passes, ice and blowing snow would be a constant issue.
Clearing of the park highway usually begins in April and continues for about two months before the road opens to through traffic. Predicting when the road will open is not possible, even in late spring, because weather in April and May can affect plowing progress significantly. See the chart below for opening and closing dates since 1980.
Spring Road Opening Dates - 1980 to Present