Hawaii Route 540
| Halewili Road | ||||
| Route information | ||||
| Maintained by HDOT | ||||
| Length | 3.9 mi (6.3 km) | |||
| Major junctions | ||||
| West end | Route 50 in Kalaheo | |||
| East end | Route 50 in Eleele | |||
| Location | ||||
| Country | United States | |||
| State | Hawaii | |||
| Counties | Kauai | |||
| Highway system | ||||
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Route 540 (Route 540) is a 3.9-mile-long (6.3 km) state highway that stretches from Route 50 in Eleele back to Route 50 in Kalaheo on the island of Kauai.