Sakai Route

The Sakai Route travels in a north to south direction from the Chūō ward of Osaka, beginning as a one-way highway at junction with Sennichi-mae-dōri. The one-way route meets the Loop Route twice in central Osaka, once on the loop's eastern side and again on its western side in Namba. At the second junction with the Loop Route, the Sakai Route's northbound traffic terminates, continuing south towards the city of Sakai as a dual carriageway. From there, it briefly parallels the Hanshin Namba Line to Shiomibashi Station where the expressway curves to the south. In the Nishinari ward the expressway meets the Nishi-Osaka Route; however the junction between the two routes is limited to two ramps: one that travels from northbound traffic of the Sakai Route to begin the westbound side of the Nishi-Osaka Route and another that leads eastbound traffic of the Nishi-Osaka Route onto the southbound side of the Sakai Route.[1]

The expressway crosses into Sakai at a bridge over the Yamato River. A planned junction between the Yamatogawa Route and the Sakai Route would be on the southern bank of the river.[2] The expressway meets its southern terminus upon meeting National Route 26 in Sakai, though the roadway continues as the national route.[1] Overall, the Sakai Route has a total length of 13.4 kilometers (8.3 mi).[3]

Construction of the Nishi-Osaka Route began in 1967 in preparation for the Expo '70 held in the nearby city of Suita. The first section of the expressway was completed after three years of construction in 1970.[4] Another 1.2-kilometer-long (0.75 mi) section of the expressway that runs within the confines of the Loop Route in central Osaka was opened in 1972.[5] The entire expressway was completed by 1976.[6]

Plans for a junction between the Sakai Route and the Yamatogawa Route have been made, but as of November 2020 there has been no progress in building the interchange.[2]

The entire expressway lies within Osaka Prefecture.

Location	km[3]	mi	Exit	Name	Destinations	Notes
Osaka	0.0	0.0	1-11	Kōdzu	Sennichi-mae-dōri	Northern terminus of southbound Sakai Route; southbound entrance only from westbound Sennichi-mae-dōri
	0.5	0.31	–	Kōdzu	Loop Route
	1.2	0.75	–	Minatomachi	Loop Route – Shimanobashi	Northern terminus of northbound Sakai Route
	1.2	0.75	15-01	Minatomachi	Loop Route – Namba, Minatomachi Parking Area	Southbound and northbound exit, access to Minatomachi Parking Area via northbound exit with return access to the Loop Route
	2.5	1.6	15-02	Shiomibashi	Shin-Naniwa-suji	Southbound entrance only
	3.4	2.1	15-03	Ashihara	Shin-Naniwa-suji	Northbound exit only
	4.0	2.5	–	Minami Hiraki	Nishi-Osaka Route west – to National Route 43, Amagasaki	Southbound entrance, northbound exit
	4.7	2.9	15-04	Tsumori	Unnamed city street	Southbound entrance, northbound exit
	6.8	4.2	15-05	Tamade	Unnamed city street – Sumiyoshi Shrine, Nanko	Southbound exit, northbound entrance
	9.5	5.9	15-06	Suminoe	National Route 26	Southbound exit and entrance, northbound entrance
Sakai			–	Yamatogawa Daiichi	Yamatogawa Route	Planned interchange[2]
	12.8– 13.4	8.0– 8.3	15-07 / 15-08	Sakai	National Route 26 – Wakayama National Route 310 south – Kawachinagano	Southern terminus; highway continues as National Route 26
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Incomplete access       Route transition       Unopened

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