Nagano Expressway
 | This article needs additional citations for verification. |
長野自動車道  | |
| Route information | |
| Maintained by East Nippon Expressway Company and Central Nippon Expressway Company | |
| Length | 75.8 km[1] (47.1 mi) |
| Existed | 1986[2]–present |
| Major junctions | |
| From | Okaya Junction in Okaya, Nagano  Chūō Expressway |
| To | Kōshoku Junction in Chikuma, Nagano Jōshin-etsu Expressway |
| Location | |
| Country | Japan |
| Major cities | Shiojiri, Matsumoto, Azumino |
| Highway system | |
The Nagano Expressway (長野自動車道, Nagano Jidōsha-dō) is a 4-laned national expressway in Nagano Prefecture, Japan. It is owned and operated by East Nippon Expressway Company and Central Nippon Expressway Company.
Naming
The expressway is officially referred to as the Chūō Expressway Nagano Route. The Chūō Expressway Nagano Route is the official designation for the Chūō Expressway between Takaido Interchange and Okaya Junction (concurrent with the Chūō Expressway Nishinomiya Route), the Nagano Expressway between Okaya Junction and Kōshoku Junction, and the Jōshin-etsu Expressway between Kōshoku Junction and Suzaka-Naganohigashi Interchange (concurrent with the Kan-Etsu Expressway Jōetsu Route).[3]
Overview
The expressway was originally built and managed by Japan Highway Public Corporation. On October 1, 2005, the management of the route was assigned to East Nippon Expressway Company (Kōshoku Junction to Azumino Interchange, excluding the interchange) and Central Nippon Expressway Company (Okaya Junction to Azumino Interchange, including the interchange).[4][5]
The route of the expressway runs through the central part of Nagano Prefecture. From the origin at a junction with the Chūō Expressway in the city of Okaya near Lake Suwa, the expressway follows a northerly course to Matsumoto, the major city in the central Nagano area. From here the expressway follows a winding northeasterly course through mountainous areas before reaching the terminus in the city of Chikuma. Beyond the terminus, the roadway continues as the Jōshin-etsu Expressway towards the city of Nagano, the prefectural capital.
History
- March 25, 1986 - Okaya Junction - Okaya Interchange section is opened as part of the Chūō Expressway.
- March 5, 1988 - Okaya Interchange - Matsumoto Interchange section is opened, Okaya Junction - Okaya Interchange section is incorporated as part of the Nagano Expressway.
- August 3, 1988 - Matsumoto Interchange - Toyoshina Interchange section is opened.
- March 25, 1993 - Toyoshina Interchange - Kōshoku Junction section is opened, connects with Jōshin-etsu Expressway.
- October 1, 2006 - Obasute Smart Interchange is opened at Obasute Service Area.
List of interchanges and features
 | This article contains a bulleted list or table of intersections which should be presented in a properly formatted junction table. |
- IC - interchange, SIC - smart interchange, JCT - junction, SA - service area, PA - parking area, BS - bus stop, CB - snow chains, TN - tunnel, BR - bridge
| No. | Name | Connections | Dist. from Origin |
Dist. from Terminus |
Bus Stop | Notes | Speed Limit | Location (all in Nagano) | |
|---|---|---|---|---|---|---|---|---|---|
| (21) | Okaya JCT | Chūō Expressway
|
0.0 | 75.8 | 70 km/h | Okaya | |||
| BR | Okaya Overpass | ↓ | ↑ | Length - 1,488m | |||||
| TN | Okaya Tunnel | ↓ | ↑ | North-bound 1,450 m South-bound 1,386 m | |||||
| 1 | Okaya IC/ Okaya (Imai) BS |
 National Route 20 (Shimosuwa Okaya Bypass)
|
3.7 | 72.1 | ○ | ||||
| TN | Enrei Tunnel | ↓ | ↑ | North-bound 1,800 m South-bound 1,707 m | |||||
| Shiojiri | |||||||||
| PA | Midoriko PA | 8.4 | 67.4 | ○ | |||||
| 2 | Shiojiri IC | National Route 20 (Shiojiri Bypass)
|
10.9 | 64.9 | |||||
| 100 km/h | |||||||||
| BS | Hirooka-Nomura BS | 14.1 | 61.7 | ○ | |||||
| 3 | Shiojiri-kita IC | Pref. Route 27 (Matsumoto Airport Shiojiri-kita Inter Route) | 17.6 | 58.2 | |||||
| BR | Naraigawa Bridge | ↓ | ↑ | Matsumoto | |||||
| BS | Kanbayashi BS | 21.0 | 54.8 | ○ | |||||
| <3-1> | Matsumoto JCT |   Chūbu-Jūkan Expressway
|
↓ | ↑ | Planned | ||||
| 4 | Matsumoto IC | National Route 158
|
25.8 | 50.0 | ○ | ||||
| SA | Azusagawa SA/SIC | Pref. Route 48 (Matsumoto Kanjō Takaya Route) | 29.1 | (46.7) | Kōshoku-bound only | ||||
| BR | Azusagawa Bridge | ↓ | ↑ | Length - 390m | |||||
| Azumino | |||||||||
| SA | Azusagawa SA/SIC | (29.9) | 45.9 | Okaya-bound only | |||||
| 5 | Azumino IC | Pref. Route 57 (Azumino Inter Horigane Route) Pref. Route 310 (Hakuyachō Tazawa Teishajō Route) |
33.1 | 42.7 | ○ | ||||
| 80 km/h | |||||||||
| BR | Saigawa Bridge | ↓ | ↑ | Length - 650m | |||||
| BS | Akashina BS | 36.5 | 39.3 | ○ | |||||
| TN | Akashina Tunnel | ↓ | ↑ | North-bound 2,512 m South-bound 2,536 m | |||||
| BS | Shiga BS | 40.5 | 35.3 | ○ | Emergency vehicle entrance/exit | Matsumoto | |||
| TN | Tachitoge Tunnel | ↓ | ↑ | North-bound 3,629 m South-bound 3,598 m | |||||
| Chikuhoku | |||||||||
| BS | Honjō BS | 47.3 | 28.5 | ○ | Emergency vehicle entrance/exit | ||||
| BS | Sakakita BS | 51.5 | 24.3 | ○ | |||||
| PA | Chikuhoku PA/SIC | 52.8 | 23.0 | SIC planned | |||||
| Omi | |||||||||
| 6 | Omi IC |  National Route 403
|
56.3 | 19.5 | ○ | ||||
| TN | Ipponmatsu Tunnel | ↓ | ↑ | North-bound 3,191 m South-bound 3,203 m | |||||
| Chikuma | |||||||||
| SA | Obasute SA/ SIC |
63.6 | 12.2 | ○ | |||||
| BR | Chikumagawa Bridge | ↓ | ↑ | Length - 530m | Nagano | ||||
| Chikuma | |||||||||
| 7 | Kōshoku IC |  National Route 18 (Ueda Shinonoi Bypass)
|
74.9 | 0.9 | ○ | ||||
| (12) | Kōshoku JCT | Jōshin-etsu Expressway (To Fujioka and Tōkyō)
|
75.8 | 0.0 | |||||
| Through to Jōshin-etsu Expressway (To Nagano and Jōetsu)
| |||||||||
There is one snow chain changing area between Obasute Service Area and Kōshoku Interchange.
References
- ^ Ministry of Land, Infrastructure and Transport, Kanto Regional Development Bureau. "Road Timetable" (in Japanese). Archived from the original on 2004-06-04. Retrieved 2008-04-16.
{{cite web}}: CS1 maint: multiple names: authors list (link) - ^ "Expressway Opening Dates" (in Japanese). Retrieved 2008-04-16.
- ^ Ministry of Land; Infrastructure and Transport. "High Standard Trunk Road Map" (PDF) (in Japanese). Archived from the original (PDF) on 2011-09-20. Retrieved 2008-04-13.
- ^ Mizutani, Fumitoshi; Uranishi, Shuji (2006). Privatization of the Japan Highway Public Corporation: Policy Assessment (PDF). 46th Congress for the European Regional Science Association. Volos, Greece. Retrieved 2008-04-11.
- ^ "NEXCO-Central Business Outline" (PDF). Retrieved 2008-04-13.[permanent dead link]