| |
|---|---|
| Ruta nacional secundaria 138 | |
| Route information | |
| Maintained by Ministry of Public Works and Transport | |
| Length | 42.985 km (26.710 mi) |
| Major junctions | |
| West end |  Route 4 |
| Major intersections |  Route 139 |
| East end |  Route 35 |
| Location | |
| Country | Costa Rica |
| Highway system | |
National Secondary Route 138, is a road between Route 4 and Route 35, contained in the north plains of the Alajuela provinceofCosta Rica.[1]
Starting west on Route 4, the road follows a slightly northeast direction towards Route 35. It is the main access route to the Caño Negro Wildlife Refuge. Most of the road is made of gravel, except for an asphalt segment on the west of the road.
The entire route is in Alajuela province.
| Canton | District | km | mi | Destinations | Notes |
|---|---|---|---|---|---|
| Upala | Upala | Route 4 |
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| Yolillal | No major junctions | ||||
| Los Chiles | Los Chiles | Route 35 |
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| Caño Negro | Route 139 |
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In May 2020 the segment between Caño Negro Wildlife Refuge and Route 35, was asphalted for a total of 18.2 km (11.3 mi).[2]
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