Why go
At Car, Honolulu and Waikiki and Interstate H-1 which runs mauka mountain-ward of downtown and runs the entire length of the south shore of Oahu H-1 is some distance away from Waikiki itself and you need to go onto surface streets to and from Waikiki If you need to access H-1 west from Waikiki to go someplace outside of the city there.
The full story
Most major streets in Honolulu run Ewa Diamond Head There are two main highways in Honolulu Nimitz Highway Hawaii 92 which runs from Pearl Harbor past Honolulu Airport to downtown Honolulu and Waikiki and Interstate H-1 which runs mauka mountain-ward of downtown and runs the entire length of the south shore of Oahu H-1 is some distance away from Waikiki itself and you need to go onto surface streets to and from Waikiki If you need to access H-1 west from Waikiki to go someplace outside of the city there are two main routes 1 Go mauka to Ala Wai Boulevard and follow it Ewa-bound to McCully Street Follow McCully mauka for about 1 mile it will take you over H-1 At the foot of the bridge turn left on Dole then left again onto Alexander to the freeway onramp 2 Follow Kuhio or Kalakaua Avenue Diamond Head-bound to Kapahulu.