Puerto Rico Highway 690 (PR-690) is a north–south road located entirely in the municipality of Vega Alta, Puerto Rico.[3] With a length of 7.6 kilometers (4.7 mi),[1] it begins at its junction with PR-676 in Bajura barrio and ends at Cerro Gordo Beach in Sabana barrio.[4][5]
Puerto Rico Highway 6690 (PR-6690) is a spur route that goes to PR-693 from PR-690 near Cerro Gordo Beach.[7]
The entire route is located in Sabana, Vega Alta.