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  4. E28 Kobe-Awaji-Naruto Expressway

E28 Kobe-Awaji-Naruto Expressway

A road crossing two straits

A route with a total length of 89.0 km that crosses the Akashi Strait from Maiko Beach scenic area, southward through Awajishima Island, crossing the Naruto Strait, famous for being a beauty spot and for its whirlpools. Of these, Ohnaruto Bridge opened in June 1985, and the Akashi-Kaikyo Bridge was completed on April 5, 1998. The Kobe-Awaji-Naruto Expressway, as a route directly connecting Shikoku with the Kansai Economic Area, has a great impact, such as revitalizing the economy.

Details Kobe Nishi IC / Naruto IC
1. Route name National Route 28

2. Section in operation

From: 4-1-4, Mitsugaoka, Nishi-ku, Kobe city, Hyogo Pref. (Kobe-Nishi IC)
To: 1338-12, Aza-Harayama, Kizu, Muya town, Naruto city, Tokushima Pref. (Naruto IC)

3. Length

89.0km
Number of bridges: 96, Total length: 24.3 km (Among them, Akashi-Kaikyo Bridge 3,911 m, Ohnaruto Bridge 1,629 m)
Number of tunnels: 8, Total length: 7.4 km (Among them, Maiko Tunnel 3,290 m)
Earthwork section approx. 57.3km

4. Construction costs

Approx. 970 billion yen (Akashi-Kaikyo Bridge related section)
Approx. 380 billion yen (Ohnaruto Bridge-related section)

5. Start of service

June 8, 1985 Between Tsuna-Ichinomiya IC and Sumoto IC
June 8, 1985 Between Seidan Ramp and Naruto-Kita IC
May 23, 1987 Between Naruto-Kita IC and Naruto IC
October 8, 1987 Between Sumoto IC and Seidan-Mihara Ramp
April 5, 1998 Between Kobe-Nishi IC and Tsuna-Ichinomiya IC
February 17, 2018 Awajishima Chuo Smart IC

6. Service status

National Highway with access control

Between Kobe Nishi IC and Tarumi JCT/IC
Number of lanes: 4, Speed limit: 100km/h

Between Tarumi JCT/IC and Awaji IC
Number of lanes: 6, Speed limit: 80km/h

Between Awaji IC and Seidan-Mihara IC
Number of lanes: 4, Speed limit: 100km/h

Between Seidan-Mihara IC and Awajishima-Minami IC
Number of lanes: 4, Speed limit: 80km/h

Between Awajishima-Minami IC and Naruto-Kita IC
Number of lanes: 4, Speed limit: 70km/h

Between Naruto-Kita IC and Naruto IC
Number of lanes: 4, Speed limit: 80km/h

Connects with Sanyo Expressway at Kobe-Nishi IC; Hanshin Expressway Kita-Kobe Route at Fusehata JCT/IC; Daini Shinmei Road Kitasen Route / Hanshin Expressway Wangan (Tarumi) Route at Tarumi JCT/IC; and Takamatsu Expressway at Naruto IC

Note) Construction cost is the cost required for construction of part already in service.

Akashi-Kaikyo Bridge
(Nickname: Pearl Bridge)(Completed in 1998)
Suspension bridge (Total length: 3,911 m, Center span: 1,991 m)
Ohnaruto Bridge
(Completed in 1985)
Suspension bridge (Total length: 1,629 m, Center span: 876 m)