The main road between Markleeville and the rest of the world will be open to one-way traffic, CalTrans announced Thursday.
Alpine County announced that morning and evening escorts for vehicles around the construction site will end with the 6 p.m. session.
The road is still due to reopen on Monday, but could be ready sooner.
On Wednesday, California Department of Transportation workers backfilled a new 8-foot culvert on Highway 89 in a bid to reopen the freeway in time.
Washed out Aug. 3 after a thunderstorm dropped about 2 inches of rain per hour on the Tamarack Fire Burn, the new culvert is twice as wide as the failed one.
The flooding occurred when it was planned to replace the old 4ft culvert with an even taller concrete structure. Installation of the larger structure was estimated to take 5-6 weeks, delaying the opening of the highway to mid-September.
The flooding also sent mud and debris into the town of Markleeville, which was cleared away.
The reopening of the motorway and the state of the works in town will be the subject of a briefing at 11am today.
The county has been escorting residents around the washout since Friday and will continue to do so until the road opens.
In Response to the Highway 89 Closure, Alpine County Approved $65,000 for Economic Recovery for Businesses, Workforce and Residents Who Have Experienced Economic Hardship Due to Debris Flows and road closures.
“If you are a resident and operate a business in the area of the road closure, and both were affected by the incident, you can complete a Resident/Labour Application and a Business Application,” officials said.
Applications must be received by 5 p.m. on August 26. Applications received after the deadline may not receive funding.
Businesses must also complete an Economic Injury Worksheet to qualify for funding.
Other fundraisers are also underway, including a Go Fund Me organized by the Alpine County Chamber of Commerce to raise funds for the resumption of business in Alpine County. Visit https://gofund.me/15312fac.
Caltrans also has a damage claims process with forms available on the Alpine County website at alpinecountyca.gov.