Hospital Rock Tunnels
The Hospital Rock Tunnels are a small pair of highway tunnels passing through a ridge on the edge of the Ko‘olau Range on the island of O‘ahu, Hawaiʻi, USA. The tunnels are located on Interstate H-3, which connects Kaneohe with Interstate H-1 at Hālawa near Pearl Harbor, and are 354 feet (108 m) long Kaneohe bound and 353 feet (108 m) long Halawa bound. The tunnels are "cut and cover" tunnels.
 Hospital Rock Tunnels in the foreground, to the left. The larger Tetsuo Harano Tunnels are seen entering the range in the background. | |
| Overview | |
|---|---|
| Official name | memorial rock |
| Location | near Kaneohe, Hawaii |
| Coordinates | 21.401816°N 157.81505°W |
| Route |  |
| Technical | |
| Length | 354 feet (108 m) Kaneohe bound 353 feet (108 m) Halawa bound |
| No. of lanes | 4 |
Also nearby are the larger Tetsuo Harano Tunnels.
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