Then Hatillo district, Alajuelita canton, San Sebastián are covered by the south section of the road, with access possible to Paso Ancho and Desamparados.

When the north arc section is finished, it will allow access to Route 32, while there is also a pending design and construction of a link to Heredia through Santo Domingo.

In the latter half of the 1950s, the Housing and Urbanism National Institute (INVU), together with the Ministry of Public Works and Transport (MOPT), proposed the construction of the ring road.

[10] The construction project on the north section was split on five "functional unit" working sections, and construction started on September 11, 2017: [11] In December 2018 and February 2019 was announced that the three semaphore-regulated junctions in the Hatillo district would be upgraded to tunnels for the transversal roads to improve the route flow of Route 39 which would be over the tunnels, these works are projected to be finished in 2020.

These works together with the upgrade of the Guadalupe semaphore junction, and the Montes de Oca train crossing removal, would render the ring road free of any stops.