Puerto Rico Highway 18
| Ruta 18 | ||||
| Expreso Las Américas | ||||
| Route information | ||||
| Maintained by Puerto Rico DTPW | ||||
| Length | 6.09 km (3.78 mi) | |||
| Existed | 1961–present | |||
| Major junctions | ||||
| South end | PR-1 / PR-52 in Monacillo Urbano | |||
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| North end | PR-22 in Hato Rey Norte | |||
| Location | ||||
| Country | United States | |||
| Territory | Puerto Rico | |||
| Municipalities | San Juan | |||
| Highway system | ||||
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Puerto Rico Highway 18 (PR-18) is a freeway in Puerto Rico, which is also known as Expreso Las Américas. It runs from its north end at its intersection with PR-22 (known as Expreso José de Diego) in San Juan to its south end in Río Piedras where it intersects with PR-1. At this point PR-18 becomes PR-52, known as Autopista Luis A. Ferré.