List of state highways in Hawaii
Standard route markers | |
| System information | |
|---|---|
| Length | 1,013 mi (1,630 km) |
| Highway names | |
| Interstates | Interstate Route HX or H-X |
| US Highways | Not applicable |
| State | Route X |
| System links | |
The Hawaii Department of Transportation (HDOT) maintains the smallest state-maintained system of state highways in the country. It consists of Interstates, state highways, and secondary state highways, totaling approximately 1,013 miles (1,630 km).
The state's four Interstates, all located on Oahu, are built to mainland standards unlike their counterparts in Alaska and Puerto Rico. The first three routes (H-1, H-2, and H-3) were approved in 1960, while an auxiliary route (H-201) was added in 1989.