Takamatsu Expressway

The expressway is an important route connecting the greater Osaka area with Takamatsu, the capital of Kagawa Prefecture. Beyond Takamatsu, the route follows a westerly course parallel to the Seto Inland Sea to its terminus with Matsuyama Expressway and Kōchi Expressway in Shikokuchūō.

The speed limit is 80 km/h along the majority of the route, there are some 100 km/h sections between Naruto Junction and Tsuda-Higashi Interchange and Takamatsu-Nishi Interchange and Kawanoe Junction.

The first section of the Takamatsu Expressway to open was between Zentsuji and Mishima-Kawanoe interchanges on 16 December 1987. The final section of the expressway (9.1 km between Takamatsu-Chūō and Takamatsu-Nishi Interchanges) was opened on 30 March 2003. The 16.2 kilometres (10.1 mi) long Takamatsu-higashi Road was incorporated into the Takamatsu Expressway on 21 November 2017.^[2]

• IC - interchange, SIC - smart interchange, JCT - junction, SA - service area, PA - parking area, BS - bus stop, TN - tunnel, TB - toll gate

Due to open the expressway from Takamatsu towards Matsuyama, kilometer markers between Naruto Toll Gate and Takamatsu-Nishi Interchange show the distance from Naruto Toll Gate plus 100 (the marker at Naruto Toll Gate is 100.0 while the marker at Takamatsu-Nishi Interchange is 165.4). Therefore, the exit numbers continue from the sequence of the Takamatsu-Nishi Interchange, starting at 7.

No.	Name	Connections	Dist. from Origin	Bus Stop	Notes	Location
Through to Kobe-Awaji-Naruto Expressway
TB	Naruto TB		100.0		Sakaide-bound entrance only	Naruto	Tokushima
12	Naruto IC	National Route 11 (Yoshinogawa Bypass)	100.2
7	Naruto JCT	Tokushima Expressway	101.6
PA	Naruto-Nishi PA		108.2 108.5	○	Sakaide-bound Naruto-bound
8	Itano IC	Pref. Route 229 (Itano Inter Route)	110.5			Itano
9	Hiketa IC	Pref. Route 40 (Shirotori Hiketa Route)	123.3	○		Higashikagawa	Kagawa
10	Shirotori-Hiketa IC	Pref. Route 41 (Shirotori-Hiketa Inter Route)	128.5
BS	Ōchi BS		130.2	○
11	Tsuda-Higashi IC	National Route 11	136.2			Sanuki
SA	Tsuda-no-matsubara SA/BS		137.3	○
12	Tsuda-Samukawa IC	Pref. Route 37 (Miki Tsuda Route)	141.4
13	Shido IC	Pref. Route 141 (Ishida Higashishido Route)	144.8
BS	Shido BS		146.4	○
14	Sanuki-Miki IC	National Route 11 (Takamatsu-Higashi Bypass) Pref. Route 38 (Miki Mure Route)	149.5		Sakaide-bound exit, Naruto-bound entrance only	Miki
BS	Shishi-no-sato Miki BS		150.9	○
15	Takamatsu-Higashi IC	National Route 11 (Takamatsu-Higashi Bypass)	152.4		Naruto-bound exit, Sakaide-bound entrance only	Takamatsu
16	Takamatsu-Chūō IC	Pref. Route 43 (Chūtoku Mitani Takamatsu Route)	156.3	△
17	Takamatsu-Danshi IC	National Route 11 (Takamatsu-Minami Bypass)	162.9		Sakaide-bound exit, Naruto-bound entrance only
1	Takamatsu-Nishi IC	Pref. Route 12 (Miki Kokubunji Route)	165.4		Naruto-bound exit, Sakaide-bound entrance only
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Incomplete access        Tolled

No.	Name	Connections	Dist. from Origin	Bus Stop	Notes	Location
1	Takamatsu-Nishi IC	Pref. Route 12 (Miki Kokubunji Route)	0.0		Naruto-bound exit, Sakaide-bound entrance only	Takamatsu	Kagawa
1-1	Fuchūko PA/SIC		7.3			Sakaide
2	Sakaide JCT	for Seto-Chūō Expressway (Sakaide Route)	14.0
BS	Marugame BS		17.2	○		Marugame
3	Zentsuji IC	National Route 319	21.6	○		Zentsuji
3-1	Mitoyo-Tossaka IC	Pref. Route 220 (Ōmi Yoshizu Niō Route)	29.5		Kawanoe-bound exit, Sakaide-bound entrance only	Mitoyo
PA	Takase PA		32.2	◆
4	Sanuki-Toyonaka IC	National Route 11	36.3
BS	Kan'onji BS/SIC		40.8	○	Planned Smart Interchange	Kan'onji
5	Ōnohara IC	National Route 11	45.3
SA	Toyohama SA		49.0 49.5	◆	Sakaide-bound Kawanoe-bound
6	Kawanoe JCT	Matsuyama Expressway Kōchi Expressway	56.8			Shikokuchūō	Ehime
Through to Matsuyama Expressway
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Incomplete access

No.	Name	Connections	Dist. from Origin	Bus Stop	Notes	Location (all in Kagawa)
Through to Seto-Chūō Expressway
TB	Sakaide TB		500.0		Sakaide-bound entrance only	Sakaide
5	Sakaide IC	National Route 11 (Sakaide-Marugame Bypass)	500.0	◆
2	Sakaide JTC	for Naruto, Shikokuchūō (Main Route)	502.0
Through to Matsuyama Expressway
1.000 mi = 1.609 km; 1.000 km = 0.621 mi        Tolled

• To prevent confusion with the main route, kilometer markers along the Sakaide Route show the distance from Sakaide Junction plus 500 (the marker at Sakaide Interchange is 500.0 while the marker at Sakaide Junction is 502.0).

• (in Japanese) West Nippon Expressway Company

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