Another massive slide blocked the San José-Limón highway in Parque Nacional Braulio Carrillo and motorists reported that they thought at least one vehicle was caught in the debris.
UPDATE: The traffic agency said that the route to Limón was opened by 9:40 a.m. today but the road still is a mess. No wrecked vehicles were found.
Rescue workers said later they could not locate any vehicle, but they were expected to keep on searching today.
The highway, Ruta 32, remained open during the early part of the month when heavy rains were ravaging the road infrastructure elsewhere. Rains returned Sunday, and they are considered at least a partial cause of the slide.
The site is 11 kilometers or about seven miles north of the Zurquí Tunnel on the way to Guápiles.
The Interamericana Norte has been opened, according to Tránsito police. That road was blocked by a large boulder at Cambronero. Workers had to knock down at least seven similar rocks that threatened the roadway.
However, the Interamericana Sur continues to be blocked by slides that severed the road between Paso Real and Palmar Norte. The highway has been out of service there since Nov. 3.
Elsewhere transport workers are installing $8.4 million in bailey bridges. These are the temporary metal bridges that the Ministerio de Obras Públicas y Transportes uses whenever a road is undermined or falls away. The on-lane bridges can be installed quickly and provide access to areas that have been cut off by bridge collapses or other road disasters.
The bulk of the heavy rain Sunday fell along the Caribbean coast and in the mountains. Similar conditions are expected for today.