The Odawara-Atsugi Road (小田原厚木道路, Odawara Atsugi Dōro) is a 4-laned toll road in Kanagawa Prefecture, Japan. It is owned and managed by Central Nippon Expressway Company.
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| 国道271号 | ||||
 小田原厚木道路 | ||||
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.JPG) | ||||
| Route information | ||||
| Length | 33.1 km[1] (20.6 mi) | |||
| Existed | 1969[2]–present | |||
| Major junctions | ||||
| From | Odawara-nishi Interchange in Odawara, Kanagawa  Seishō Bypass | |||
| To | Atsugi Interchange in Atsugi, Kanagawa Tōmei Expressway National Route 129 | |||
| Location | ||||
| Country | Japan | |||
| Major cities | Hiratsuka, Isehara | |||
| Highway system | ||||
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Route description
Officially the road is designated as National Route 271[1] as well as E85 under their "Expressway Numbering System."[3] The entire road is built to a standard similar to that of an urban expressway 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 connects western Kanagawa Prefecture (including the popular onsen resort town of Hakone) with Tokyo through the Tōmei Expressway. The route parallels Route 1 until Ōiso, where it then follows a northeasterly route through Hiratsuka and Isehara before terminating in Atsugi.
The road was opened in 1969 with 2 lanes. Expansion to 4 lanes was completed in 1978.[4]
For toll collection purposes the road is divided into an Odawara section and an Atsugi section, with Ōiso Interchange as the dividing point. The toll for a normal passenger car to use one section is 350 yen.[5]
List of interchanges and features
- IC - interchange, PA - parking area, TB - toll gate
| Name | Connections | Dist. from Origin | Notes | Speed Limit | Location (all in Kanagawa) |
|---|---|---|---|---|---|
| Odawara-nishi IC | Seishō Bypass | 0.0 | 60 km/h | Odawara | |
| Ogikubo IC | 1.8 | Odawara-bound exit, Atsugi-bound entrance only | |||
| Odawara-higashi IC |  National Route 255 | 6.7 | |||
| Odawara Toll Plaza/ PA | ↓ | PA: Odawara-bound only | |||
| Ninomiya IC | 13.7 | Ninomiya | |||
| Ōiso IC/ PA | 17.2 | PA: Atsugi-bound only | Ōiso | ||
| 80 km/h | |||||
| Hiratsuka Toll Gate | ↓ | Hiratsuka | |||
| Hiratsuka IC/ PA | Pref. Route 62 (Hiratsuka Hadano Route) | 23.2 | PA: Odawara-bound only | ||
| Isehara IC | Pref. Route 44 (Isehara Fujisawa Route) | 26.8 | Atsugi-bound exit, Odawara-bound entrance only | Isehara | |
| Atsugi-nishi IC | Pref. Route 604 (Aikō Ishida Teishajō Sakai Route) | 30.8 | Atsugi | ||
| 60 km/h | |||||
| Atsugi IC |  Tōmei Expressway National Route 129 | 33.1 | Route 129 inaccessible from Odawara |