Interstate H-201

H-201 marker

H-201

Moanalua Freeway
Route information
Auxiliary route of H-1
Length4.10 mi[1] (6.60 km)
Existed1989–present
HistorySigned in 2004
Major junctions
West end Route 99 in Aiea
Major intersections H-1 / H-3 in Hālawa
East end H-1 in Honolulu
Location
CountryUnited States
StateHawaii
CountiesHonolulu
Highway system
  • Routes in Hawaii
Route 200Route 220

Interstate H-201 (H-201) is the only auxiliary Interstate located outside the Contiguous United States, on the island of O‘ahu in the U.S. state of Hawaii. The H-201 designation is also known as the Moanalua Freeway. The loop route connects exits 13 and 19 on H-1, passing Fort Shafter, Tripler Army Medical Center, and Red Hill. The highway is 4.1 miles (6.6 km) long.

Despite being designated an Interstate in 1989, until mid-2004 the route was an unsigned Interstate, signed only as Route 78.

H-201 eastbound approaching Exit 3 in Moanalua. Letters in H-201 shields require thinner text, such as on signage like this one.

References