Richardson Grove Highway 101 widening project gets approval to begin

Caltrans has cleared the biggest legal hurdle in its plan to widen about one mile of U.S. Highway 101 through Richardson Grove State Park, a move the agency says will let standard freight trucks use the North Coast corridor instead of detouring around it. The work targets a narrow stretch in southern Humboldt County, but its effects reach far beyond the park, touching freight costs, visitor travel, and the long fight over whether commerce or preservation should define this part of the highway.

A California Court of Appeal ruling on March 26 upheld Caltrans’ environmental review and project approvals, and the agency said on April 1 that it was moving forward. The appellate panel’s published opinion put the dispute in stark terms: “The CEQA battle has come to its end.” That decision arrived after roughly 15 years of litigation tied to a first public meeting in 2007, followed by legal challenges in 2010 and 2014.

Caltrans says the project is needed because U.S. 101 is the primary north-south route on California’s North Coast and a critical artery for regional commerce. The agency’s proposal would make minor adjustments to the roadway alignment through Richardson Grove so industry-standard trucks conforming to the Surface Transportation Assistance Act can pass through the corridor. For businesses that depend on freight moving between Humboldt County and the rest of the state, the project could reduce the extra time and expense of detours that have long complicated shipping on the coast.

That economic argument is exactly what conservation groups and many Humboldt residents have spent years resisting. Opponents say the widening would cut into sensitive root networks beneath old-growth redwoods, some described as up to 3,000 years old and more than 300 feet tall. They also argue the region already has an alternative freight path, pointing to the 2017 Buckhorn Summit work on Highway 299, which they say allows industry-standard trucks into Humboldt County without reopening a fight inside Richardson Grove.

Caltrans says it plans hand digging and air spades to reduce damage to the redwood roots during construction, a sign of how carefully the project will be executed in the park. Even so, a one-mile active construction zone on Highway 101 will put pressure on drivers, freight carriers, and local businesses that rely on smooth travel through Leggett and the southern Humboldt corridor. More than 60,000 people have signed letters urging Gov. Gavin Newsom to stop the project, a reminder that the state is not just widening a road, it is choosing which risk to accept: a tougher road for trucks or a deeper incision into one of Humboldt County’s most sensitive forest landscapes.