According to local officials, the Bureau of Land Management has begun interpreting viewsheds as a potential negative impact to historic sites.
That move has led to the increase of costs for the placement of snow fences on South Pass.
Fremont County transportation supervisor Dave Pendleton recently had to raise the budget of a $93,000 snow fence project by $15,500 as a result of the new regulation.
The change also means that one section of snow fences will not be built.
Last year, Pendleton had considered using students -- and their free labor -- from the Wind River Job Corps to build snow fences, but has since reconsidered that.
"They're not real motivated to get things done in a reasonable amount of time," he said.