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Japan National Route 465

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National Route 465 shield
National Route 465
国道465号
Map
National Route 465 highlighted in red
Route information
Length111.0 km[1] (69.0 mi)
Existed1 April 1993–present
Major junctions
East end National Route 409 in Mobara
Major intersections
West end National Route 16 in Futtsu
Location
CountryJapan
Highway system
← National Route 464→ National Route 466

National Route 465 (国道465号, Kokudō Yonhyaku roku-jūgogō) is a national highway located entirely within Chiba Prefecture, Japan. It connects the cities of Mobara and Futtsu, spanning the Bōsō Peninsula in an east–west routing. The highway has a total length of 111.0 kilometers (69.0 mi).

Route description

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National Route 465 connects the cities of Mobara and Futtsu, spanning Chiba Prefecture's Bōsō Peninsula in an east–west routing. The highway has a total length of 111.0 kilometers (69.0 mi), though the first 25.0 kilometers (15.5 mi) of the highway that runs concurrently with National Route 128, is not signed as National Route 465.[1][2] The highway's eastern terminus lies at a junction with National Route 409 in Mobara, where it begins its concurrency with National Route 128. The two highways pass through the municipalities of Chōsei and Ichinomiya heading south towards the city of Isumi along the eastern coast of the peninsula.[1][3]

In Isumi the highways diverge, with National Route 128 continuing south along the coast towards the southern tip of the peninsula and National Route 465 heading west towards its interior, paralleling the Isumi Line. Crossing into the mountainous town of Ōtaki, the highway meets National Route 297 just to the west of the town's central district. The two highways share a brief concurrency running south through the relatively dense area, after which National Route 465 continues west, paralleling the Isumi Line to the railway's terminus at Kazusa-Nakano Station.[4][3]

Crossing into the city of Kimitsu, the highway continues winding its way west through the peninsula's mountainous interior. Near Kazusa-Kameyama Station the highway curves to the northwest and meets National Route 410 shortly after. The highways share another concurrency descending from the mountains, traveling though the narrow Yomachisaku Daiichi Tunnel, and then curving towards the southwest. The two routes diverge at the foot of Mount Kano. National Route 465 passes into the city of Futtsu directly to the south of the mountain. Just to the east of central Futtsu, the highway meets National Route 127, they share yet another concurrency traveling north together through central Futtsu towards the Tateyama Expressway. The aforementioned highways travel alongside each other for a brief period with Futtsu-chūō interchange linking them before the highways all separate within the vicinity of Sanukimachi Station. National Route 465 travels directly to that train station, paralleling the Uchibō Line to the highway's western terminus at a junction with National Route 16 on Cape Futtsu.[1][3]

History

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Yomachisaku Daiichi Tunnel

In 1902, the Yomachisaku Daiichi Tunnel (四町作第一隧道, Yomachisaku Daiichi Zuidō) was completed using only hand tools along what would become National Route 465 in the city of Kimitsu. The tunnel is the second oldest tunnel that is designated as a part of a national highway in Japan.[5][6]

National Route 465 was established by the Cabinet of Japan in 1993.[7] A re-aligning and widening project along the highway in the city of Kimitsu was completed on 31 March 2015. The project resolved problems created by several repetitive tight curves. The straightened roadway decreased the length of National Route 465 by 200 meters (660 ft).[8][9] On 23 December 2015, a 20-meter-long (66 ft) section of the Yomachisaku Daiichi Tunnel's shotcrete lining collapsed following a re-application of the supportive lining a month prior to the collapse. The tunnel lining was repaired by the following day.[10]

Major intersections

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The route lies entirely within Chiba Prefecture.

Locationkm[3]miDestinationsNotes
Mobara0.00.0 National Route 409 west – Kisarazu
Chiba Prefecture Route 27 south – Katsuura, Ōtaki		Eastern terminus; eastern end of National Route 409 concurrency, highway continues south as Chiba Prefecture Route 27
0.20.12 National Route 128 north / National Route 409 east – Chiba, TōganeWestern end of National Route 409 concurrency, eastern end of National Route 128 concurrency
Chōsei4.83.0Chiba Prefecture Route 85 south / Chiba Prefecture Route 293 west – MutsuzawaEastern end of Chiba Prefecture Route 293 concurrency
6.03.7Chiba Prefecture Route 293 north – Seibu Industrial ParkWestern end of Chiba Prefecture Route 293 concurrency
6.94.3Chiba Prefecture Route 227 north – Yatsumi Station
Ichinomiya9.25.7Chiba Prefecture Route 123 – Ichinomiya Beach, Shirako
9.86.1Chiba Prefecture Route 148 westNo direct access to Chiba Prefecture Route 148, one-way street
9.96.2Chiba Prefecture Route 228 east – Kazusa-Ichinomiya Station
13.38.3Chiba Prefecture Route 274 west – Matsumaru
14.28.8Chiba Prefecture Route 152 south – Misaki
15.79.8Chiba Prefecture Route 30 north – to Kujūkuri Toll Road [ja], Kujūkuri
Isumi18.411.4Chiba Prefecture Route 229 west – Taitō Station
20.712.9Chiba Prefecture Route 152 north – Misaki
24.315.1 National Route 465 west (Fukahori Bypass) – Ōtaki
25.215.7 National Route 128 south – Katsuura, OnjukuWestern end of National Route 128 concurrency
26.916.7NR 128 National Route 465 east (Fukahori Bypass) – to National Route 128
31.319.4Chiba Prefecture Route 176 – Yamada, Onjuku
34.121.2Chiba Prefecture Route 154 east – Misaki
35.021.7Chiba Prefecture Route 85 north – Mobara
37.123.1Chiba Prefecture Route 82 south – Kominato, Katsuura
37.623.4Chiba Prefecture Route 151 north – Mutsuzawa
Ōtaki40.525.2C4 National Route 297 north (Ōtaki-Kaidō) – to Ken-Ō Expressway, Ichihara, Chiba
Chiba Prefecture Route 172 west – Central Ōtaki		Eastern end of National Route 297 concurrency
42.026.1Chiba Prefecture Route 231 north – Central Ōtaki, Ōtaki Prefectural Forest
42.426.3 National Route 297 south (Ōtaki-Kaidō) – Kamogawa, KatsuuraWestern end of National Route 297 concurrency
51.131.8Chiba Prefecture Route 177 south – Kominato, Katsuura
51.632.1Chiba Prefecture Route 32 west – Kururi
54.834.1Chiba Prefecture Route 81 north – Chiba, Yōrō Keikoku
Chiba Prefecture Route 178 south – Okitsu, Mamenbara		Eastern end of Chiba Prefecture Route 81 concurrency
Kimitsu59.036.7Chiba Prefecture Route 81 south – Kamogawa, KiyosumiWestern end of Chiba Prefecture Route 81 concurrency
67.441.9Chiba Prefecture Route 24 south (Kururi Kaidō) – KamogawaEastern end of Chiba Prefecture Route 24 concurrency
68.042.3 National Route 410 north / Chiba Prefecture Route 24 north (Kururi Kaidō)Eastern end of National Route 410 concurrency, western end of Chiba Prefecture Route 24 concurrency
76.647.6 National Route 410 south – Tateyama, Seiwa Prefectural ForestWestern end of National Route 410 concurrency
81.750.8CA Chiba Prefecture Route 92 / Chiba Prefecture Route 93 east (Bōsō Skyline) – to Tokyo Bay Aqua-Line, KamogawaEastern end of Chiba Prefecture Route 93 concurrency
82.551.3Chiba Prefecture Route 93 west – Mount KanoWestern end of Chiba Prefecture Route 93 concurrency
Futtsu92.757.6Chiba Prefecture Route 182 south (Momiji Road) – Hota
95.659.4Chiba Prefecture Route 93 east – Mount KanoEastern end of Chiba Prefecture Route 93 concurrency
96.159.7NR 127 Chiba Prefecture Route 93 west – to National Route 127, KazusaminatoWestern end of Chiba Prefecture Route 93 concurrency
98.261.0 National Route 127 south (Uchibō Nagisa Line) – Tateyama, HamakanayaEastern end of National Route 127 concurrency
99.962.1CA  Tateyama Expressway – to Tokyo Bay Aqua-Line, Chiba, Kawasaki, TateyamaFuttsu-chūō Interchange (E14 exit 19)
101.262.9 National Route 127 north (Uchibō Nagisa Line) – Chiba, Kisarazu
Chiba Prefecture Route 163 east – to Bōsō Skyline, Mount Kano		Western end of National Route 127 concurrency, eastern end of Chiba Prefecture Route 163 concurrency
102.063.4Chiba Prefecture Route 163 ends
Chiba Prefecture Route 256 south – Shinmaiko Beach		Western end of Chiba Prefecture Route 163 concurrency
105.865.7 National Route 465 north (Uchibō Bypass) – Kimitsu
110.268.5Chiba Prefecture Route 255 west – Cape Futtsu
111.069.0 National Route 16 – Cape Futtsu, Kisarazu
E14 Chiba Prefecture Route 90 – to Tateyama Expressway, Chiba, Kisarazu		Western terminus; highway continues north as Chiba Prefecture Route 90
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

See also

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References

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  1. ^ a b c d "一般国道の路線別、都道府県別道路現況" [Road statistics by General National Highway route and prefecture] (PDF) (in Japanese). Ministry of Land, Infrastructure, Transport and Tourism. Retrieved 11 February 2020.
  2. ^ "再評価結果" [Re-evaluation results] (PDF) (in Japanese). Ministry of Land, Infrastructure, Transport and Tourism. 2004. Retrieved 23 April 2021.
  3. ^ a b c d "Route 465" (Map). Google Maps. Retrieved 22 April 2021.
  4. ^ "路線図" [Route map] (in Japanese). Isumi Railway Company. 2013. Retrieved 23 April 2021.
  5. ^ "ビックリ道路大集合…！これが「酷道・怖道・険道」だ" [Several surprising roads. Cool, scary, and steep roads] (in Japanese). Kodansha. 4 February 2021. Retrieved 20 April 2021.
  6. ^ Nogishi, Yasuyuki (12 April 2021). "房総半島は素掘りトンネル王国!? 日本で2番目に古い国道トンネルを走ってみた". Bike News (in Japanese). MediaVague. Retrieved 21 April 2021.
  7. ^ 一般国道の路線を指定する政令 [Cabinet Order Designating General National Routes] (in Japanese). Cabinet of Japan. 1965. Retrieved 21 April 2021 – via Wikisource.
  8. ^ "一般国道465号（黄和田畑拡幅）の一部が開通します。" [Section of National Route 465 to be opened.] (PDF) (in Japanese). Chiba Prefecture. 23 March 2015. Retrieved 22 April 2021.
  9. ^ "国道４６５号一部拡幅 ２車線のバイパス完成 君津" [Widening and re-aligning of National Route 465 completed in Kimitsu]. Chiba Nippō (in Japanese). 27 March 2015. Retrieved 23 April 2021.
  10. ^ "23-ton collapse blocks Chiba tunnel; no one injured". The Japan Times. 24 December 2015. Retrieved 21 April 2021.
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