BLM has posted a press release on August 12th:
THE BLM AND FHWA BEGIN CONSTRUCTION ON DUMONT DUNES ROAD
"The contractor for this project, Herback General Engineering, will begin surveying and staking activities on Dumont Dunes Road as early as next week. Construction activities include paving the existing gravel road with asphalt and extending and improving the water crossing at the Amargosa River."
The whole press release: https://www.blm.gov/press-release/blm-and-fhwa-begin-construction-dumont-dunes-road