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San'yō Expressway

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San'yō Expressway sign
San'yō Expressway
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Route information
Part of AH1
Length446.7 km (277.6 mi)
405.6 km (main line)
9.6 km (Miki branch line)
3.4 km (Hanshin branch line)
28.1 km (Ube branch line)
Existed1982-1997–present
Major junctions
FromKobe JCT(Kobe 神戸, Hyōgo)
ToYamaguchi JCT(Yamaguchi 山口, Yamaguchi)
Shimonoseki JCT(Shimonoseki 下関, Yamaguchi)
Location
CountryJapan
Major citiesKobe, Himeji, Okayama, Fukuyama, Hiroshima, Iwakuni, Yamaguchi
Highway system

The San'yō Expressway (山陽自動車道, San'yō Jidōshadō) (Asian Highway Network AH1) is an expressway in Japan, running from Kobe through Hiroshima along the Inland Sea and terminating in Yamaguchi Prefecture. The entire length of the expressway was opened in 1997. The main line has a total length of 405.6 kilometers.

List of interchanges and features

Main Route

Number Name Connections Distance from Kōbe (km) Bus Stop Notes Location
Through to Shin-Meishin Expressway
(5-1) Kōbe JCT Chūgoku Expressway 0.0 Kobe Hyōgo
1 Kōbe-Kita IC/
Hata BS 		Rokkō-Kita Toll Road 2.6 ○
- Awaji PA - 7.3
- Awaji BS - 12.3 ○
2 Miki JCT for Akashi Kaikyō Bridge (Kimi Branch) 15.4 Miki
- Shijimi BS - 16.8 ○
3 Miki-Higashi IC Hyōgo Prefectural Route 85 18.0
- Kurumi BS - 23.1 ○
- Miki SA - 25.5
4 Miki-Ono IC National Route 175 (Miki-Ono Bypass) 27.7
- Ono BS - 30.2 ○ Ono
- Gongenko PA - 36.1
36.5 		○ for Kobe, Osaka
for Okayama 		Kakogawa
5 Kakogawa-Kita IC Hyōgo Prefectural Route 43 41.2
- Shikitō BS - 46.5 ○ Himeji
6 San'yō Himeji-Higashi IC National Route 372
Bantan-Renraku Toll Road 		49.8
- Shiratori PA - 60.7
61.6 		○ for Kobe, Osaka
for Okayama
7 San'yō Himeji-Nishi IC National Route 29 Himeji-Nishi Bypass 62.7
8 Tatsuno IC Hyōgo Prefectural Route 29 69.3 ○ Tatsuno
9 Tatsuno-Nishi IC/SA Hyōgo Prefectural Route 93
Hyōgo Prefectural Route 121 		73.7
9-1 Harima JCT Harima Expressway 74.7
- Aioi BS - 78.3 ○ Aioi
10 Akō IC Okayama/Hyōgo Prefectural Route 96 88.3 ○ Akō
- Fukuishi PA - 95.0 Bizen Okayama
11 Bizen IC National Route 2 98.8
12 Wake IC National Route 374 109.1 Wake District, Wake
- Seto PA - 116.9
117.7 		for Kobe
for Okayama, Hiroshima 		Okayama
- Seto JCT 119.3
13 San'yō IC Okayama Prefectural Route 37 123.2 △ Akaiwa
- Kasaiyama Tunnel - Okayama
14 Okayama IC National Route 53 (Okayama-Kita Bypass) 136.8 △
14-1 Kibi SA/IC 138.4
15 Okayama JCT Okayama Expressway 143.9 -
16 Kurashiki JCT for Seto-Chūō Expressway (Hayashima Branch) 150.3 - Kurashiki
17 Kurashiki IC National Route 429 152.4
18 Tamashima IC Okayama Prefectural Route 54 161.9
- Michiguchi PA - 166.5
19 Kamogata IC Okayama Prefectural Route 155 171.9 Asakuchi
20 Kasaoka IC Okayama Prefectural Route 34 180.1 Kasaoka
- Shinosaka PA - 185.3
21 Fukuyama-Higashi IC National Route 182
(Fukuyama Loop Road) 		191.7 Fukuyama Hiroshima
- Senda BS - 194.4 ○
- Fukuyama SA - 200.3
200.5 		For Okayama, Osaka
for Hiroshima
- Fukuyama-Hongō BS - 207.6 ○
22 Fukuyama-Nishi IC National Route 2 (Matsunaga Bypass) 208.6
22-1 Onomichi JCT Onomichi Expressway 213.1 Onomichi
23 Onomichi IC National Route 184 214.5
- Yahata PA - 222.2
222.5 		For Hiroshima, Kitakyūshū
for Okayama 		Mihara
24 Mihara-Kui IC National Route 486/Hiroshima Prefectural Route 25 227.2
- Takasaka PA - 231.4 ☆ BS for connections only
expressway entrance/exit prohibited
24-1 Hongō IC Hiroshima Prefectural Route 82 238.5
25 Kōchi IC Hiroshima Prefectural Route 73/National Route 432 246.7 ○ Higashihiroshima
- Kodani SA - 249.7
250.0 		For Hiroshima, Kitakyūshū
for Fukuyama, Okayama
25-1 Takaya JCT Higashihiroshima-Kure Expressway (planned) 252.8 Expected to open in 2010
26 Saijō IC Hiroshima Prefectural Route 59
National Route 375 (Misonō Bypass) 		257.8 ◆
27 Shiwa IC Hiroshima Prefectural Route 83 268.8 ◆
- Okuya PA - 270.9
28-1
28 		Hiroshima-Higashi IC Hiroshima Expressway Route 1
Hiroshima Prefectural Route 70 		279.2 ○ Hiroshima
29 Hiroshima IC National Route 54 (Gion Bypass) 285.6
- Numata PA - 291.2 ○
30 Hiroshima JCT Hiroshima Expressway 293.1
31 Itsukaichi IC Hiroshima Prefectural Route 71 296.1
31-1 Miyajima SA 306.2 Hatsukaichi
32 Hatsukaichi JCT Hiroshima-Iwakuni Road for Hatsukaichi, Miyajima 310.4
32-2 Ōno IC Hiroshima Prefectural Route 289 315.1 ◆
32-3 Ōtake IC National Route 2 323.4 Ōtake
<33> Ōtake JCT 324.1
- Sekido Tunnel - Iwakuni Yamaguchi
34 Iwakuni IC National Route 2
Yamaguchi/Hiroshima Prefectural Route 1 		332.6 ◆
- Kuga PA - 344.2
35 Kuga IC Yamaguchi Prefectural Route 70 346.7 ○
36 Kumage IC Yamaguchi Prefectural Route 8 358.9 ○ Shūnan
- Kudamatsu SA - 364.8 Kudamatsu
- Mimitori Tunnel - Shūnan
37 Tokuyama-Higashi IC National Route 2 (Shūnan Bypass) 370.7 ○
38 Tokuyama-Nishi IC National Route 2 388.7
- Tonomi PA - 392.2 Hōfu
39 Hōfu-Higashi IC National Route 2 (Hōfu Bypass) 401.3 for Hiroshima
40 Hōfu-Nishi IC 404.6 △ for Kitakyūshū
- Sabagawa SA - 407.5
41 Yamaguchi-Minami IC National Route 2
(Ogōri Bypass) 		413.2 Yamaguchi
(33) Yamaguchi JCT Chūgoku Expressway 419.3 -

Kimi Branch

Number Name Connections Distance from Miki (km) Notes Location
2 Miki JCT Main Route 0.0 Miki
1 Kōbe-Nishi IC/TB Hyōgo Prefectural Route 22 9.6 TB is on Miki-bound side Kobe
Kōbe-Awaji-Naruto Expressway for Tokushima

Hayashima Branch

Number Name Connections Distance from Kurashiki (km) Bus Stop Notes Location
16 Kurashiki JCT for Hiroshima, Kōbe (Main Route) 0.0 - Kurashiki
1 Hayashima IC/TB National Route 2 (Okayama Bypass) 3.4 ◆ Toll gate is on Kōbe/Hiroshima-bound side Hayashima, Tsukubo District
Seto-Chūō Expressway for Kojima, Sakaide

Ube-Shimonoseki Route

Number Name Connections Distance from Ube (km) Bus Stop Location
42 Ube JCT Yamaguchi-Ube Road 0.0 - Ube
43 Ube IC National Route 490 3.1 ○
44 Onoda IC Yamaguchi Prefectural Route 71 13.2 ○ Sanyoonoda
- Suōnada PA - 20.6 ○
45 Habe IC National Route 2(Asa-Habu Bypass) 22.7
(35-2) Shimonoseki JCT Chūgoku Expressway 28.1 - Shimonoseki

See also

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