Lees eens het artikel waar in het bericht van FamilieB naar verwezen wordt.Adridejong schreef:Sonora pass nog 3 Mile? Dat schiet dan op toch? Wij zouden er 8 juni langs moeten?
Marianne
Lees eens het artikel waar in het bericht van FamilieB naar verwezen wordt.Adridejong schreef:Sonora pass nog 3 Mile? Dat schiet dan op toch? Wij zouden er 8 juni langs moeten?
De sneeuw zal de minste moeite zijn. De takken en vooral de stenen op de weg zullen de meeste tijd kosten om op te ruimen. Zeker nu de sneeuw snel zal smelten zal het allemaal sneller gaan, maar vergis je niet in de werkzaamhedenSand0rf schreef:De Sonora Pass is dus totaal nog 3 mile als ik het goed begrijp. Je zou toch denken dat dat geen weken moet duren...
Ach zal wel komen door onze winters dat we daar niet een goed beeld van hebben
Dus de opening zal nog een tijdje duren voor beide passen.SIERRA NEVADA
Road crews still working on mountain passes
By Guy McCarthy, The Union Democrat, @GuyMcCarthy
Published Jun 2, 2017 at 07:31PM
So much snow fell this past winter in the rugged alpine watersheds that road builders chose for the highest paved routes over the Central Sierra crest, there are still no definite dates for the openings of Ebbetts Pass on Highway 4, Sonora Pass on Highway 108 and Tioga Pass on Highway 120.
Five locations above 7,500 feet in the Mokelumne River watershed that includes Highway 4 had 206 percent of average snowpack when they were measured April 1.
In the Stanislaus River watershed that includes Highway 108, Deadman Creek at 9,250 feet and Clark Fork Meadow at 8,900 feet had 224 percent and 237 percent of average, and as of May 1 the Stanislaus basin average was 195 percent.
In the Tuolumne River watershed that includes Highway 120, Dana Meadows at 9,800 feet, Bond Pass at 9,300 feet and Tuolumne Meadows at 8,600 feet had 229, 231 and 215 percent of average for April 1, respectively.
From north to south along the high spine of the Central Sierra, Ebbetts Pass on Highway 4 is at 8,730 feet, Sonora Pass on Highway 108 is at 9,624 feet, and Tioga Pass at 9,945 feet is the highest paved through route in California.
Working both sides
Caltrans crews on both sides of the highest mountain range in 48 states are working with bulldozers, snow blowers, plow trucks, chainsaws and explosives to carve and blast their way through compacted snow banks and unstable drifts still up to 20 feet high above road surfaces.
Over the past two months, staff with two different Caltrans districts and Yosemite National Park have continued posting updates on social media with dramatic photos and videos in their efforts to show the public why these key mountain routes remain closed in June, when they are all usually open by this time each spring.
Workers in heavy machinery are busy clearing snow at the highest elevations of Ebbetts Pass, and other crews are repairing road damage discovered as final layers of snow and ice are scraped off the pavement and shoulders, according to Caltrans District 10 staff based in Stockton.
A hillside avalanche this past winter near Wolf Creek plugged a drainage culvert, sending snow, water, rocks and other debris into and under the roadway. Part of the road is being rebuilt, a safety inspection is pending and crews expect to open Ebbetts Pass in July, District 10 staff said this week.
From Calaveras Big Trees State Park and other points in Calaveras County, Highway 4 is now open to the east end of Lake Alpine reservoir.
Sonora Pass
Crews in heavy machines are about two miles from the top of Sonora Pass on the Tuolumne County side, and about one mile from the summit on the east side in Mono County, according to staff with Caltrans Districts 9 and 10.
The snowpack is estimated to be 12 to 15 feet deep on the 108. Keeping a multi-ton vehicle bulldozer or a snow blower on track when the roadway is under 15 feet of snow is a serious undertaking, especially when the 108 switchbacks steeply in places with no guardrails. The big machines weigh 40,000 to 50,000 pounds each, said Florene Trainor of Caltrans District 9.
In a post on social media updated from May 17 to June 1, Chris Baker, a Caltrans supervisor said his snow-clearing crews use an electric line embedded in the center of the highway to stay on track. A worker on foot uses a locator device to detect the electrified centerline and puts out markers for a dozer driver to follow.
Dozers carve layers off the snowpack, pushing it down to the blowers. Blower operators then follow the centerline from there and clear a wider path on the highway. All workers are wearing winter boots. All machines have their tires chained up.
Last week Caltrans District 10 staff said they anticipate Sonora Pass will be open in three to five weeks.
Eastbound motorists coming from Pinecrest, Strawberry and other points in Tuolumne County can drive to the gate at Kennedy Meadows Road for now.
Tioga Pass
Inside Yosemite National Park, Highway 120 is called Tioga Road and it heads east from Crane Flat past Olmsted Point, Tenaya Lake and Tuolumne Meadows to Tioga Pass.
As of Thursday this week, crews plowing from west to east had cut through an avalanche zone called Spring Hill near Tenaya Lake. Yosemite National Park staff said crews were working through snowpack up to 10 feet deep and drifts close to 20 feet high.
Elsewhere on Tioga Road, crews are widening plowed lanes and doing road repairs.
It’s 15.5 miles from Tenaya Lake to the Tioga Pass park exit/entrance.
Outside the park on the steep east side, Caltrans District 9 crews have cleared snow on Highway 120 to within a half-mile of the Tioga Pass park exit/entrance. The snow is 12 to 15 feet deep at the gate.
Caltrans District 9 workers are using a snow blower equipped with a computerized Mountain Pass Road Opening System. It connects to a satellite and global positioning data that shows the edge of pavement on a screen the blower driver can see. The system is “very precise and invaluable,” Trainor said.
There is no estimated date for reopening Tioga Pass. Since 1980, the latest opening date for Tioga Pass was July 1, 1998. In Tuolumne County, the farthest you can drive Highway 120 is just past Crane Flat where it’s called Tioga Road and it’s closed.
Als ik het me goed herinner een Pontiac Bonneville, geen idee waar we die toen hebben gehuurd, maar was toen een normale auto natuurlijk, niks bijzonders.FamilieB schreef:Geweldige foto! Wat voor auto is dat Pete?
Het is wat je onder ff verstaat. Nog steeds geen datum waar ze naartoe werken, al heb ik het idee dat ze deze keer misschien wel pas een dag vooraf zeggen, morgen gaat ie open.Road opening is not imminent; much work still remains before the road will be safe to open.
Je moet altijd rekening houden met een alternatief. Nu nog met de wintersluiting. In de zomermaanden me bosbranden door de droogte. Dan sluiten ze deze weg ook nogal eens een dag(deel).DAn zal de weg toch wel vrij zijn?? Of moet ik toch ook rekening houden met een alternatief??
http://www.sonorapassvacations.com/wint ... tions.html.The pass is projected to open at noon on Friday, June 9, 2017.
Bij de reacties op deze Facebook post staat dat ze naar eind juni, begin juli toe werken. https://www.facebook.com/YosemiteNPS/ph ... 7442103073PSVwally schreef:Het is wat je onder ff verstaat. Nog steeds geen datum waar ze naartoe werken, al heb ik het idee dat ze deze keer misschien wel pas een dag vooraf zeggen, morgen gaat ie open.Road opening is not imminent; much work still remains before the road will be safe to open.
We're looking at late June- early July for an opening, weather permitting. For any travel in June, we recommend planning alternative routes with the expectation that the Tioga Road will be closed.