|Length:||32.2 km (20.0 mi)|
|To:||Matsuo-Yokoshiba Interchange in Sanmu, Chiba
Chōshi Renraku Road
Chiba Prefectural Route 62
|National highways of Japan
Expressways of Japan
Officially the road is designated as National Route 126. The road is built to an expressway standard and is classified as a road for motor vehicles only (自動車専用道路 Jidōsha Senyō Dōro) (motor vehicles must have a displacement of at least 125 cc).
The road consists of two distinct sections. The first section (Chiba-higashi Junction to Tōgane Interchange) was opened in 1979 and connects the prefectural capital Chiba with the city of Tōgane. It is 4 lanes for its entire length.
The second section (Tōgane Interchange to Matsuo-Yokoshiba Interchange) was opened in 1998 and is 2 lanes. This section is designed to become part of the future Ken-Ō Expressway. The expressway will extend south beyond Tōgane Interchange (expected to open in 2009-2010) and north beyond Matsuo-Yokoshiba Interchange (route is currently under assessment).
Electronic Toll Collection (ETC) is accepted, however no discount programs are in effect.
List of interchanges and features
(all in Chiba)
| Keiyō Road
National Route 16
|0.0||IC: Chiba-bound exit, Tōgane-bound entrance only||Chūō-ku, Chiba|
|2||Ōmiya IC||3.2||Wakaba-ku, Chiba|
|3||Takada IC||7.5||Midori-ku, Chiba|
|PA||Noro PA||↓||Wakaba-ku, Chiba|
|4||Nakano IC||Pref. Route 129 (Honda Teishajō Nakano Route)||11.4|
|5||Yamada IC||Pref. Route 83 (Yamadadai Ōami Shirasato Route)||13.9||Tōgane-bound exit, Chiba-bound entrance only||Tōgane|
|6||Tōgane IC|| Ken-Ō Expressway (Planned)
National Route 126
|7||Sanbu-Narutō IC||Pref. Route 76 (Narutō Shisui Route)||24.8||Sanmu|
|8||Matsuo-Yokoshiba IC|| Chōshi Renraku Road
Pref. Route 62 (Narita Matsuo Route)
|Through to Ken-Ō Expressway (Planned)|
- "E-NEXCO Expressway Data". Archived from the original on 2007-12-13. Retrieved 2008-04-13.
- Chiba Prefectural Government. "History of Capital Projects in Chiba" (pdf). Retrieved 2008-05-15.[dead link]
- Ministry of Land, Infrastructure and Transport. "Ken-O Expressway Plan, Chiba Section". Archived from the original on 2008-04-15. Retrieved 2008-05-15.
- (in Japanese) East Nippon Expressway Company
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