Yamagata Expressway

The Yamagata Expressway (山形自動車道, Yamagata Jidōsha-dō) is a national expressway in the Tōhoku region of Japan. It is owned and operated by East Nippon Expressway Company.

Yamagata Expressway
山形自動車道
Route information
Length136.6 km[1] (84.9 mi)
Existed1981[2]–present
Major junctions
FromMurata Junction in Murata, Miyagi
Tōhoku Expressway
ToSakata-Minato Interchange in Sakata, Yamagata
Nihonkai Engan Tōhoku Expressway
Yamagata Prefectural Route 59
Location
Major citiesYamagata, Sagae, Tsuruoka
Highway system
National highways of Japan
Expressways of Japan

Naming

The expressway is officially referred to as the Tōhoku Ōdan Expressway Sakata Route. From Tsuruoka Junction to Sakata-Minato Interchange the expressway is concurrent with the Nihonkai Engan Tōhoku Expressway, which is planned to extend further north to Akita Prefecture and Aomori Prefecture.[3]

Overview

The expressway begins in southern Miyagi Prefecture at a junction with the Tōhoku Expressway and heads west, crossing over into Yamagata Prefecture. The route passes to the north of the Yamagata city area and subsequently meets the Tōhoku-Chūō Expressway. From here the expressway crosses mountainous areas of western Yamagata Prefecture before reaching the city of Tsuruoka near the Japan Sea coastline. The remainder of the expressway follows a northerly course paralleling the coastline to the terminus in the city of Sakata.

The route is incomplete between Gassan Interchange and Yudonosan Interchange which cuts the route into two physically separate sections. Travellers must use National Route 112 to travel between the two interchanges. As of March 2008 there are no plans to make the Yamagata Expressway a single contiguous expressway.[4]

The expressway is 4 lanes from Murata Junction to Yamagata Junction and 2 lanes for all other sections. The speed limit is 80 km/h for the 4-laned section and 70 km/h for the 2-laned sections.

List of interchanges and features
No. Name Connections Dist. from
Origin		 Dist. from
Terminus		 Bus Stop Notes Location
(26) Murata JCT Tōhoku Expressway 0.0 83.5 Murata Miyagi
1 Miyagikawasaki IC National Route 286
Pref. Route 14 (Watari Ōgarawa Kawasaki Route)		 10.4 73.1 Kawasaki
PA Furuseki PA 18.2 65.3
2 Sasaya IC National Route 286 22.3 61.2
TN Sasaya Tunnel ↓ ↑ Murata-bound - 3,411 m
Sakata-bound - 3,286m
Yamagata Yamagata
3 Sekizawa IC National Route 286 28.1 55.4 Sakata-bound exit, Murata-bound entrance only
4 Yamagatazaō IC/
PA		 National Route 286 35.6 47.9
TN Sakazukiyama Tunnel ↓ ↑ Murata-bound - 1,234 m
Sakata-bound - 1,244 m
5 Yamagata-kita IC National Route 13 41.9 41.6
Emergency Exit ↓ ↑ Access for Yamagata Chūō Hospital
Authorized vehicles only
6 Yamagata JCT Tōhoku-Chūō Expressway 46.6 36.9
BR Mogamigawa Bridge ↓ ↑ Mogami River crossing Nakayama
7 Sagae IC National Route 112 53.0 30.5 Sagae
7-1/SA Sagae SA/
SIC		 National Route 458 55.9 27.6 ○
8 Nishikawa IC National Route 112 67.0 16.5 ○ Nishikawa
TB Nishikawa Toll Gate ↓ ↑
TN Kazeakesan Tunnel ↓ ↑ Length - 1,923 m
PA Gassanko PA 81.3 2.2
9 Gassan IC National Route 112 83.5 0.0
Through to National Route 112 (Gassan Road)
10 Yudonosan IC National Route 112 0.0 26.3 Tsuruoka Yamagata
TN Tamugimata Tunnel ↓ ↑ Length - 1,921 m
TN Miguriya Tunnel ↓ ↑ Length - 1,463 m
BS Shōnai-Asahi Bus Stop 9.1 17.2 ○
11 Shōnai-Asahi IC Pref. Route 44 (Amarume Atsumi Route) 9.9 16.4
PA Kushibiki PA 13.0 13.3
12/TB Tsuruoka IC/
TB		 National Route 7 23.8 2.5
17 Tsuruoka JCT Nihonkai-Tōhoku Expressway 26.3 0 Yamagata Expwy ←→ Atsumi: No access
Through to Nihonkai-Tōhoku Expressway
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References
  1. "E-NEXCO Expressway Data". Retrieved 2008-04-13.
  2. "Expressway Opening Dates". Retrieved 2008-04-16.
  3. Ministry of Land, Infrastructure and Transport. "High Standard Trunk Road Map" (PDF). Archived from the original (pdf) on 2011-09-20. Retrieved 2008-04-13.
  4. "E-NEXCO Opening Schedule". Retrieved 2008-04-15.

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