| Big Island (table 2) |
| Route |
Name |
Termini/misc road info |
Mileage |
Former?
 |
Hookena
Beach
Road |
JN  Mamalahoa Highway about 20 miles south of Kailua-Kona, northwest to Hookena; narrow and winding; appears on unofficial 1973 map, but not on prior official maps or route lists; no old route shields, milemarkers, or other evidence that road was ever part of the state highway system |
2.3
miles |
Former
 |
Kuakini
Highway
(part) |
JN Kuakini Highway and Queen Kaahumanu Highway south of downtown Kailua-Kona, continuing northwest as unnumbered county road to JN  Palani Road  Ali'i Drive in downtown Kailua-Kona; former routing of before completion of the Queen Kaahumanu Highway extension south of Palani Road, sometime after 1976 |
3.3
miles |
Former
(part) |
Maile
Street |
JN Hawaii Belt Road, east to JN  Kamahi Street in Pahala; old sign assemblies at JN  Pikake Street are only remnants of former route signage on old routes 15 and 151; signed as route 15, but designated as Federal-aid route 150, under county jurisdiction; apparently was removed from Federal-aid system in late 1960s |
1.0
miles |
Former
(part) |
Kamahi
Street
(part) |
JN Maile Street, south to JN Hawaii Belt Road; no route shields or milemarkers; designated as Federal-aid route 150, under county jurisdiction; apparently was removed from Federal-aid system in late 1960s |
0.3
miles |
Former
(part) |
Pikake
Street |
JN Maile Street, east to JN Wood Valley Road; old sign assemblies at JN Maile Street are only remnants of former route signage on old routes 15 and 151; used to be private road included in Federal-aid highway system, but apparently was removed from system and lost its route designation in late 1960s |
0.6
miles |
Former
(part) |
Wood
Valley
Road |
JN Pikake Street, northeast through Wood Valley to end of pavement; one-lane road; no route shields or milemarkers; may at one point have been designated route 150; used to be private road included in Federal-aid highway system, but apparently was removed from system and lost its route designation in late 1960s |
5.6
miles |
Former
(part) |
Old
Mamalahoa
Highway |
JN  Mamalahoa Highway and Hawaii Belt Road  Mud Lane east of Waimea, east to JN Hawaii Belt Road in Honokaa; apparently was part of state highway system upon statehood, until bypassed by part of Hawaii Belt Road in September 1963 |
12.3
miles |
 |
Kamehameha
Avenue
(part) |
JN Bayfront Highway at  Waianuenue Avenue in Hilo, east to JN Kamehameha Avenue and Pauahi Street; former alignment of Hawaii Belt, until it was rerouted onto Bayfront Highway in 1951 (before adoption of modern route number system); may be realigned onto part or all of this segment, if Bayfront Highway is truncated (see note at Bayfront Highway listing on Table 1) |
0.7
miles |
Former
 |
Wainaku
Street |
JN Waianuenue Avenue in Hilo, north to JN Hawaii Belt Road; originally mostly county-owned and -maintained Federal-aid route, with its northernmost improved 0.2 miles under state jurisdiction; now just an unnumbered (and paved) county road; route 21 appears on maps from at least two publishers through 1976, but Hawaii DOT planning documents suggest that it lost its Federal-aid designation in the late 1960s |
1.9
miles |
Former?
 |
Old
Akaka
Falls
Road |
JN  Old Mamalahoa Highway in Honumu, west to JN Akaka Falls Road; one unofficial map, and a 1964 Hawaii DOT report, suggest ambiguously that this road used to be part of state route 22 (or 220) |
~ 0.4
miles |
Former?
 |
(unknown) |
Possible former state highway branching south from  Kawaihae Road, to Queen Kaahumanu Highway; shown in 1985-1986 Gousha road atlases, but not shown on any earlier or later Hawaii DOT planning documents or maps I have reviewed |
~ 10
miles |
Former
proposed
 |
"Hilo-
Keaukaha
escape
road" |
Proposed state highway, including present-day  Kalanianaole Street east from downtown Hilo, to Keaukaha on coast east of Hilo, then looping west back to Kanoelehua Avenue at present-day  Puainako Street south of downtown Hilo; apparently intended, along with proposed state route 137 (see note between listings below), to facilitate emergency evacuations of residents along the coast east of Hilo (perhaps prompted by 1960 tsunami that devastated low-lying areas in and around Hilo); appears in 1961 Hawaii DOT planning document, but no later plans or maps |
7.8
miles
(incl.
3.1
miles
now in
 and ) |
(part) |
Keaau-
Pahoa
Road
(includes
Keaau
Bypass
and
Pahoa
Bypass) |
JN Volcano Road north of Keaau, southeast to JN  Pahoa-Kalapana Road and  Pahoa-Kapoho Road; western end rerouted in 1999 to new Keaau Bypass north of Keaau (see  listing below for old road through Keaau), which shortened route by about 0.7 miles; also, about 4.3 miles near Keaau was previously flood-prone county road, replaced in August 1968 by state highway on new alignment; eastern end rerouted to bypass Pahoa in November 1990 (see following listing for old road through Pahoa); highway east of Keaau Bypass and west of Pahoa bypass (except perhaps county road segment replaced in 1968) was part of former route 13 |
12.1
miles |
Former
 |
Old
Keaau-
Pahoa
Road
(part) |
JN Keaau-Pahoa Road west of Pahoa, southeast through Pahoa town center to JN Keaau-Pahoa Road and Pahoa-Kalapana Road Pahoa-Kapoho Road; bypassed by new alignment north of town in November 1990; part of former route 13; see listing below for the rest of Old Keeau-Pahoa Road |
1.5
miles |
(part) |
Pahoa-
Kalapana
Road |
JN Keaau-Pahoa Road and Pahoa-Kapoho Road, southwest to Kaimu-Kapoho Road, via short spur from JN Kaimu-Chain of Craters Road; about 2.5 miles of this segment near Pahoa was closed by damage from February 1955 eruption of the Kilauea volcano, replaced by new highway in 1958; parts of this segment used to be county highway, apparently transferred to state jurisdiction in late 1960s; part of former route 13 |
9.3
miles |
(part) |
Kaimu-
Chain of
Craters
Road |
JN Pahoa-Kalapana Road (at spur to Kaimu-Kapoho Road), southwest to end of pavement near Kaimu, at JN (unnamed access road, listed below); highway used to extend another 3.5 miles southwest to connect to Chain of Craters Road at the former coastal entrance to Hawaii Volcanoes National Park, beginning some time in the 1960s; lava flows severed that connection in late 1986; road reopened to HVNP in February 1987, but was promptly reclosed by new lava flows; Hawaii DOT planned to try to re-reopen highway in August 1987, but gave up in the face of yet more new lava flows (which ultimately destroyed Kalapana village and the coastal entrance to HVNP); part of this segment may have been county highway, transferred to state jurisdiction in late 1960s; may have been part of former route 13 |
~ 1.5
miles
(plus
3.5
miles
closed) |
| Photos |
HIGHWAY SOUTHWEST OF KAIMU CLOSED INDEFINITELY BY LAVA FLOWS. used to extend 3.5 miles southwest of Kaimu (formally still part of the route 130 right of way), to connect with Chain of Craters Road at the former coastal entrance to Hawaii Volcanoes National Park. See following listing for the restricted access road built over part of the right of way. |
|
(unnamed)
(former
"Kalapana
Safe
Viewing"
toll road) |
JN Keaau-Kalapana Road at end of pavement near Kaimu, southwest to parking area for trailhead to vantage points for viewing lava flows from the Kilauea volcano into the ocean; road built over part of route 130 right of way closed by lava flows; originally unpaved gravel road, except for four short surviving stretches of route 130 pavement (now road is completely paved); originally built in mid-2001, 2.6 miles long, to replace even rougher and longer road that had been access to what's left of the Royal Gardens subdivision; from August 2001 through April 2002, operated by Hawaii County as toll road to take tourists to safe lava viewing areas (until lava flows shifted well west of the road, into Hawaii Volcanoes National Park); toll was $5 for cars, $20 for commercial vehicles; closed to general public thereafter; westernmost < 0.4 mile severed by new lava flows in early March 2008, just before the flows reached the ocean; remainder of road reopened to general public March 8, 2008, for visitors to view the new lava flows into the ocean; tolls have not been re-imposed, though county officials may do so later; road shortened some more beginning March 12, 2008 by lava flows covering the westernmost remnant of old route 130 pavement; more lava started nibbling away at the westernmost remaining old route 130 pavement segment in May 2010 (by July 2010, lava overran former intersection of route 130 with county 137 within that segment), forcing the county government to once more relocate the lava viewing area and trailhead; as of October 2013, road shortened to about 0.8 mile, including only the two easternmost remnants of the original road (now used for trailhead parking), with a short hike from there to a lava viewing area |
~ 0.8
miles |
| Road reopened to general public in March 2008, with limited hours, to visit lava viewing site. Other use of the road is RESTRICTED to residents and landowners in lava closure area, and perhaps also (assuming previous policy is resumed) native Hawaiians exercising hunting and fishing rights. Changed lava flows may close or further shorten road on short notice, or lead Hawaii County to re-close the road to the general public. See the Kilauea eruption update for the latest on lava flows in the closure area, and the Lava Closures photos pages for photos and other information. |
| Photos |
The part of the old access road continuing west of the new lava viewing trailhead, about three miles to the Royal Gardens subdivision, was re-covered by lava beginning in early 2001 and occasionally thereafter, and remains CLOSED indefinitely. |
County
 |
Pahoa-
Kapoho
Road
(part) |
JN Keaau-Pahoa Road and Pahoa-Kalapana Road, east to JN  Pahoa-Kapoho Road Kaimu-Kapoho Road; eastern end of this segment used to be state highway, apparently transferred to county jurisdiction in late 1960s; that may include about 0.8 miles near eastern end damaged in 1955 eruption of the Kilauea volcano, or unspecified mileage destroyed along with Kapoho village in January 1960 eruption (which was repaired by Hawaii DOT) |
7.8
miles |
Former
County
 |
Pahoa-
Kapoho
Road
(part) |
JN Pahoa-Kapoho Road Kaimu-Kapoho Road, east to lighthouse at Cape Kumukahi (easternmost point in Hawaii); rough unpaved road; used to be paved territorial/state highway, before January 1960 lava flows covered most or all of the road, and most of the rest of the cape (but spared the lighthouse); apparently transferred to county jurisdiction in late 1960s, but at some point was dropped from numbered county highway system as well (as confirmed by rare "end" banner at JN with ); see preceding listing for additional route history which may also apply to this segment |
1.6
miles |
| Photos |
 |
Kalanianaole
Street
(part) |
JN Kalanianaole Street and Kuhio Street  Silva Street in Hilo, east to east entrance to Hilo Harbor; part of old route 120 |
0.2
miles |
County
(part) |
Kalanianaole
Street
(part) |
JN Kalanianaole Street in Hilo at east entrance to Hilo Harbor, east to end of pavement; part of old route 120 |
2.8
miles |
See listing above for former proposed  , for apparently short-lived proposal in the early 1960s for a short state highway including this segment and also one looping back to south Hilo.
There is a gap of almost 20 miles between this western segment of route 137, and the eastern segment in the next listing. There are no firm plans to connect them with an auto road; indeed, the narrow Old Puna Road Trail that occupies much of the gap between the two segments may be improved, but restricted to non-motor-vehicle use.
A 1973 state highway map, and before then a 1961 Hawaii DOT planning document, indicates that there had been plans to construct a new road (which was to be part of at first state and then county route 137) to fill the gap, which may explain why the disconnected segments carry the same route number. In addition, a sign at JN , and mileposting of the eastern segment that places that junction at about mile 7.7 of route 137, suggests that there had been later plans to fill at least part of the gap, by improving a mostly rough, narrow, and unpaved road (4x4 recommended) from the Hawaiian Beaches Estates subdivision southeast to JN . (This road is neither signed nor milemarked, and is not currently county-maintained.)
A 2005 draft Hawaii County planning document, however, rejects a similar coastal route as an alternate route between Hilo and the Puna district, in part because its vulnerability to tsunamis and (at its eastern end) lava flows would make it a poor emergency evacuation route. Other inland routings, which would not connect the existing segments, remain under consideration. |
County
(part) |
Kaimu-
Kapoho
Road
(the
"Red
Road") |
JN Pahoa-Kapoho Road, southwest along coast to end of pavement at Kaimu, shortly preceded by short connector to ; milemarkers begin at mile 8 about 0.3 miles south of route 132; limited route signage; often called the "Red Road" because of its original red cinder pavement (most of which is now covered by smooth black asphalt); about 0.3 miles (in Kapoho, probably at JN ) originally state-maintained, but transferred to county probably in late 1960s; before Kalapana was destroyed by lava flows, highway was called "Kalapana-Kapoho Road" |
14.6
miles
(plus
~ 3
miles
closed) |
| Much of this road has narrow and wavy pavement. Low-lying portions, south of Kapoho near mile 11, sometimes flood at high tide. |
| Photos |
HIGHWAY SOUTHWEST OF KAIMU CLOSED INDEFINITELY BY LAVA FLOWS. used to extend about 3 miles southwest of Kaimu, to join near Kalapana. |
 |
Old
Keaau-
Pahoa
Road
(part) |
JN Volcano Road in Keaau, to JN Keaau-Pahoa Road; was part of route 130 (and before then, route 13), until route 130 was rerouted in 1999 to new northern bypass of Keaau; state planned to transfer this road to the county in 2008, but that plan apparently has not been carried out; see  listing above for rest of Old Keaau-Pahoa Road |
1.2
miles |
County
(part) |
Wright
Road
(part) |
JN Volcano Road in Volcano village, north to JN  Amaunau Road (Wright Road continues 0.1 miles beyond junction); route shields at JN , and milemarkers indicate route number |
3.1
miles |
| Hawaii County's official numbered route map does not include this or the following segment of . But they definitely are not in the state system (they were in 1960s, but a 1967 Hawaii DOT planning document targeted them for transfer to the county), and they are too well marked to be considered an "old" route. I have therefore treated them as a current county route. |
County
(part) |
Amaunau
Road |
JN Wright Road near Volcano, north to end of pavement |
1.7
miles |
A 1961 Hawaii DOT planning document proposed to extend route 148 about another 14 miles northward, to  Saddle Road. However, the extension plans are not shown in Hawaii DOT planning documents later that decade, and appear to have been dropped by then. |
 |
Ke-ala-o-
Keawe
Road |
JN Mamalahoa Highway at Keokea, west to Puuhonua O Honaunau National Historical Park access road (0.13 miles included in  ), and JN  Puuhonua Road; completed April 1967; (part of?) former route 16; before then, at least 1.3 miles was (proposed?) route 110 |
4.0
miles |
| This highway is sometimes referred to as "City of Refuge Road," referring to Puuhonua O Honaunau, where even the most serious offenders against ancient Hawaiian "kapu" (taboos) could obtain swift absolution if they could make it inside before being killed by their pursuers.
|
County
(part) |
Puuhonua
Road |
JN Ke-ala-o-Keawe Road, near entrance to Puuhonua O Honaunau National Historical Park, north to JN Napoopoo Road; very narrow one-lane paved road; no route shields, but milemarkers may indicate route number; may be part of former route 16; this and following segment, unlike many other numbered county routes, were not in the original 1960s state or Federal-aid highway systems, but apparently were added later to the numbered county highway network |
3.1
miles |
County
(part) |
Napoopoo
Road |
JN Puuhonua Road, east then north to JN Mamalahoa Highway in Captain Cook; no route shields, but some milemarkers indicate route number; may be part of former route 16 |
4.4
miles |
County
 |
Mamalahoa
Highway
(North Kona
Belt Road) |
JN (via < 0.1 mile connection over Ha'awina Street), north to JN Mamalahoa Highway and Palani Road northeast of Kailua-Kona; few or no route shields, but milemarkers indicate route number; former route 18; this segment of Mamalahoa Highway continues south of Ha'awina Street another 2.2 miles to JN Mamalahoa Highway at Honalo, as unnumbered route (perhaps also part of former route 18), though a sign on northbound suggests erroneously that part of Mamalahoa Highway is also part of  |
9.1
miles |
County
 |
Hualalai
Road |
JN Ali'i Drive in Kailua-Kona, southeast to Mamalahoa Highway south of Hualaloa; no route shields or milemarkers, though one junction sign incorrectly indicates road is route 180; most of highway (all except 0.2 miles west of  Kuakini Highway) was not in the original 1960s state or Federal-aid highway systems, but apparently was added later to the numbered county highway network; route 182 used to also include at its west end about 0.3 miles of what is now Ali'i Drive; another 0.3 miles in the middle of  was realigned onto and is concurrent with the newer Queen Kaahumanu Highway, currently Hawaii's only multiplex |
3.6
miles |
County
 |
Kamehameha
III Road |
JN Kuakini Highway south of Kailua-Kona, southwest to end of road at Keauhou Bay; no route shields, but milemarkers indicate route number; unlike many other numbered county routes, was not in the original 1960s state or Federal-aid highway systems, but apparently was added later to the numbered county highway network; named for the third king of Hawaii in the Kamehameha dynasty |
1.8
miles |
County
 |
Ali'i Drive |
JN Palani Road and Kuakini Highway in Kailua-Kona, south to Haleki'i Street; no route shields, but milemarkers indicate route number; unlike many other numbered county routes, most except the 0.5 miles north of JN Hualalai Road, which had been part of route 182, was not in the original 1960s state or Federal-aid highway systems, but apparently was added later to the numbered county highway network; Ali'i Drive was extended south about 3.5 miles, from Keauhou-Kona Golf Course to Haleki'i Street, in January 2013 (after being opened only to rush-hour traffic in 2009), as a developer-built public road; not entirely clear whether extension was or will be added to ; "ali'i" is Hawaiian for "royalty" |
12.7
miles |
The county plans to extend Ali'i Drive south another 2.2 miles to JN Mamalahoa Highway Napoopoo Road. The last phase of right-of-way acquisition was underway as of November 2013.
In addition, the county has long planned to bypass the narrow northern part of this road, and part of Palani Road, with a new 4.5-mile long Ali'i Parkway (originally was to be four lanes, now downsized to two). The plans approved in 2001 have been mired in controversy, especially after the discovery in the proposed right-of-way of native Hawaiian burial sites. In October 2007 the Hawaii Burial Council gave the go-ahead for construction to begin, with conditions to protect known and as-yet-undiscovered burial sites. The county expects the 300-feet-wide right-of-way, from when four lanes were planned, will leave enough room to build two lanes while minimizing issues with any additional sites that may be found. However, additional complications have placed the Ali'i Parkway project on indefinite hold.
|
(part) |
Mamalahoa
Highway
(part), and
Palani Road
(part) |
(See listings on Table 1 for inland route for the Hawaii Belt) |
(part) |
Palani Road
(part) |
JN Queen Kaahumanu Highway and Palani Road (see Table 1), west through downtown Kailua-Kona to JN Kuakini Highway and Ali'i Drive; along with Kuakini Highway, was part of former Hawaii Belt routing through Kailua-Kona until construction of the Queen Kaahumanu Highway bypass in the mid-1970s; signs on indicate that this segment is not part of , but Hawaii DOT records show otherwise |
0.4
miles |
 |
Kealakehe
Parkway
(part) |
JN Queen Kaahumanu Highway north of Kailua-Kona, east to end of pavement; no route shields or milemarkers; recent addition to state highway system, though unclear how recent; Hawaii DOT had plans to extend highway 1.9 miles east to Palani Road, but current plans are to extend highway only to Kealaka'a Street; Kealakehe Parkway also continues west of as unnumbered county road |
1.2
miles |
State route; 
County route; 
Former route; 
