Interstate H-201

H-201 marker

H-201

Moanalua Freeway
Route information
Auxiliary route of H-1
Length4.10 mi (6.60 km)
Existed1989–present
HistorySigned in 2004
NHSEntire route
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
← 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

  1. ↑ Adderly, Kevin (December 31, 2014). "Table 2: Auxiliary Routes of the Dwight D. Eisenhower National System of Interstate and Defense Highways as of December 31, 2014". Route Log and Finder List. Federal Highway Administration. Retrieved June 8, 2015.