Was Nicaragua Right About the Tico RSJ Border Road?
When Costa Rica started construction on a road along the Rio San Juan there was a salvo of politic-speak going back and forth between Costa Rica and Nicaragua. Costa Rica claimed the road was needed to protect its interests against Nicaraguan agression. Nicaragua claimed that the road was causing environmental damage in the area and, in particular, the river itself.
The boarder is the south shore of the river. That is, the river is entirely in Nicaraguan territory. Thus, the Costa Rican construction, while within Costa Rican territory was a serious environmental issue. Costa Rica denied there was an issue.
Today, I found an article titled Authorities hoping to prevent the rain from washing out Nicaragua border road in Tico Times. From the article
Engineers from the Public Works and Transport Ministry (MOPT) and the National Roadway Council (CONAVI) are preparing a contingency plan to prevent the rains from washing out Route 1856, a road along Río San Juan in the border with Nicaragua.
As much of the road is extremely close to the river, it is safe to assume that if part of the road does wash out, the material will end up in Nicaragua's river.