| Country: | JPN |
| Type: | Expressway |
| Route: | Sasson |
| Length Km: | 38.3 |
| Length Round: | 1 |
| Length Ref: | [1] |
| Established: | 1971 |
| Terminus A: | Sapporo Junction in Sapporo Dō-Ō Expressway |
| Terminus B: | Otaru Interchange in Otaru, Hokkaidō National Route 5 Hokkaido Prefectural Route 17 |
| Map Custom: | yes |
The is a 4-laned national expressway in Hokkaidō, Japan. It is operated by the East Nippon Expressway Company.
The name Sasson is a kanji acronym of two characters. The first character represents and the second represents, which are the two cities connected by the expressway.
Officially the expressway is a part of the Hokkaidō Ōdan Expressway Nemuro Route and Abashiri Route.[2]
The first section of the expressway opened in 1971 with two lanes ahead of the 1972 Winter Olympics. Expansion to four lanes was completed in 1974.[3] The entire route was completed in 1992 with a connection to the Dō-Ō Expressway.[4]
The speed limit is 80 km/h along the entire route.
The section from Sapporo-nishi Interchange through Sapporo Junction to Sapporo-minami Interchange on the Dō-Ō Expressway is built to an urban expressway standard and tolls are charged at a flat rate. As of March 2008 the toll on this section is 400 yen for regular passenger cars. Tolls on all other sections of the expressway are assessed according to distance travelled in the same manner as most other national expressways.[5]
| No. | Name | Connections | Dist. from Origin | Dist. from Terminus | Bus Stop | Notes | Location (all in Hokkaidō) |
|---|---|---|---|---|---|---|---|
| Through to Dō-Ō Expressway | |||||||
| (32) | Sapporo JCT | Dō-Ō Expressway | 0.0 | 38.3 | Shiroishi-ku, Sapporo | ||
| BR | Toyohiragawa Bridge | ↓ | ↑ | Toyohira River crossing | |||
| Higashi-ku, Sapporo | |||||||
| 1 | Kariki IC | National Route 274 (Sapporo Shindō) National Route 275 | 1.9 | 36.4 | Sapporo-bound exit, Otaru-bound entrance only | ||
| 2 | Fushiko IC | National Route 274 (Sapporo Shindō) Pref. Route 112 (Sapporo Tōbetsu Route) | 3.4 | 34.9 | Otaru-bound exit, Sapporo-bound entrance only | ||
| BR | Fugome Bridge | ↓ | ↑ | ||||
| 3 | Sapporo-kita IC | National Route 274 (Sapporo Shindō) | 7.6 | 30.7 | Otaru-bound exit, Sapporo-bound entrance only | ||
| 4 | Sapporo-kita IC | National Route 5 (Sapporo Shindō) | 7.6 | 30.7 | Sapporo-bound exit, Otaru-bound entrance only | Kita-ku, Sapporo | |
| 5 | Shinkawa IC | National Route 5 (Sapporo Shindō) Pref. Route 125 (Maeda Shinkawa Route) | 10.2 | 28.1 | Otaru-bound exit, Sapporo-bound entrance only | ||
| 6/TB | Sapporo-nishi IC/TB | National Route 5 (Sapporo Shindō) Pref. Route 124 (Miyanosawa Kitaichijō Route) | 14.0 | 24.3 | Sapporo-bound exit, Otaru-bound entrance only | Nishi-ku, Sapporo | |
| Teine-ku, Sapporo | |||||||
| 7 | Teine IC | 17.5 | 20.8 | Otaru-bound entrance and exit, Sapporo-bound entrance only | |||
| PA | Kanayama PA/ Emergency Exit | 20.0 | 18.3 | Emergency Exit: Authorized vehicles only | |||
| BR | Hoshiokigawa Bridge | ↓ | ↑ | ||||
| Otaru | |||||||
| 8 | Zenibako IC | Pref. Route 147 (Zenibako Inter Route) | 23.6 | 14.7 | Zenibako River crossing | ||
| BS | Miharashi Bus Stop | 24.8 | 13.5 | ○ | |||
| TN | Hariusu Tunnel | ↓ | ↑ | ||||
| 9 | Otaru JCT | Shiribeshi Expressway | 34.0 | 4.3 | No access: Asari IC → Otaru-shioya IC | ||
| BS | Shinkō Bus Stop | 34.7 | 3.6 | ○ | |||
| 10 | Asari IC | Pref. Route 1 (Otaru Jōzankei Route) | 35.3 | 3.0 | |||
| TB | Asari Toll Gate | ↓ | ↑ | ||||
| TN | Asari Tunnel | ↓ | ↑ | ||||
| TN | Wakatake Tunnel | ↓ | ↑ | ||||
| 11 | Otaru IC | National Route 5 Pref. Route 17 (Otarukō Route) | 38.3 | 0.0 | |||