The Capital Region First Ring Expressway (Formerly as Seoul Ring Expressway) (Expressway No.100) (Korean: 수도권제1순환고속도로; RR: Sudogwon Je1sunhwan Gosokdoro) is an expressway, circular beltway or ring road around Seoul, South Korea. It connects satellite cities around Seoul, Ilsan, Namyangju, Hanam, Pyeongchon, Jungdong, Bundang, Pangyo, Sanbon and Gimpo. The expressway runs 127.6 km. Seoul Ring Expressway is currently under construction to widen the expressway between Anhyeon Junction to Seongnam which is expected to be finished in 2016.

This article does not cite any sources. (December 2009)

Quick Facts Expressway No.100, Route information ...

Expressway No.100
Capital Region First Ring Expressway 수도권제1순환고속도로
Route information
Length	128.02 km (79.55 mi)
Existed	1992–present
Major junctions
Cycle end	Pangyo JC in Seongnam, Gyeonggi Province Gyeongbu Expressway
Major intersections	33
Cycle end	Pangyo JC in Seongnam, Gyeonggi Province Gyeongbu Expressway
Location
Country	South Korea
Major cities	Seongnam, Hanam, Guri, Uijeongbu, Goyang, Gimpo, Incheon, Bucheon, Siheung, Anyang
Highway system
Highway systems of South Korea Expressways National Local

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Since 2010, Gyeonggi Loop Bus connect the many Satellite town to each other through this Expressway.

• February 1988: Construction begins from Pangyo to Toegyewon.
• 29 November 1991: Section from Pangyo to Toegyewon opens to traffic.
• December 1991: Construction begins from Sanbon to Pangyo.
• May 1992: Construction begins from Seoun to Jangsu.
• December 1992: Construction begins from Ilsan to Gimpo.
• June 1995: Construction begins from Gimpo to Seoun and from Jangsu to Sanbon.
• 28 December 1995: Section from Pangyo to Sanbon opens to traffic.
• 3 November 1997: Section from Gimpo to Jayuro opens to traffic.
• 24 July 1998: Section from Seoun to Jangsu opens to traffic.
• 26 November 1999: Sections from Jangsu to Sanbon and from Gimpo to Seoun open to traffic.
• 11 September 2001: Section from Ilsan to Jayuro opens to traffic.
• 30 June 2006: Sections from Ilsan to Songchu and from Uijeongbu to Toegyewon open to traffic.
• 28 December 2007: Section from Songchu to Uijeongbu opens to traffic.
• 3 May 2010: Dori JC opens to traffic.
• 28 May 2015: Howon IC opens to traffic.
• Winter 2015: 확장공사
• September 1, 2020: The Seoul Ring Expressway is renamed Capital Region First Ring Expressway.

This article contains a bulleted list or table of intersections which should be presented in a properly formatted junction table. (November 2021)

• IC: Interchange, JC: Junction, SA: Service Area, TG:Tollgate

More information No., Name ...

No.	Name	Korean Name	Hanja Name	Connections	Distance		Notes	Location
1	Pangyo JC	판교분기점	板橋分岐點	Gyeongbu Expressway( AH 1)	-	0.00	Busan-bound Only	Seongnam	Gyeonggi
2	Seongnam IC	성남나들목	城南나들목	National Route 3 Moran station ( Line 8, Suin–Bundang)	4.16	4.16
TG	Seongnam TG	성남요금소	城南料金所				Main Tollgate
3	Songpa IC	송파나들목	松坡나들목	National Route 3 Local Route 342 Heolleung-ro(헌릉로) Wiryejungang-ro(위례중앙로) Suseo station ( Line 3, Suin–Bundang) Bokjeong station ( Line 8, Suin–Bundang)	5.20	9.36		Songpa	Seoul
4	W.Hanam IC	서하남나들목	西河南나들목	Gangdong-daero (Seoul City Route 60)	5.00	14.36		Hanam	Gyeonggi
SA	Hanam SA	하남휴게소	西河南休憩所				Pangyo-bound Only
5	Hanam JC	하남분기점	河南分岐點	Jungbu Expressway	4.96	19.32
6	Sangil IC	상일나들목	上一나들목	National Route 43 (Jojeong-daero-Cheonho-daero) Seoul City Route 50 (Cheonho-daero) Sangil-dong station ( Line 5)	2.53	21.85		Gangdong	Seoul
7	Gangil IC	강일 나들목	江一나들목	Seoul-Yangyang Expressway Olympicdaero	3.04	24.89
BR	Gangdong Bridge	강동대교	江東大橋
8	Topyeong IC	토평나들목	土坪나들목	National Route 6 Gangbyeonbuk-ro	0.99	25.88		Guri	Gyeonggi
TG	Guri·Namyangju TG	구리·남양주요금소	九里·南楊州料金所				Main Tollgate
9	Namyangju IC	남양주나들목	南楊州나들목	National Route 6 Guri station ( Gyeongui·Jungang)	2.40	28.28		Namyangju
10	Guri IC	구리나들목	九里나들목	National Route 43 National Route 46 Bukbu Urban Expressway	1.90	30.18		Guri
SA	Guri SA	구리휴게소	九里休憩所				Uijeongbu-bound Only
12	Toegyewon IC	퇴계원나들목	退溪院나들목	National Route 43 National Route 46 National Route 47 Byeollae station ( Gyeongchun)	2.73	32.91		Namyangju
TG	Buramsan TG	불암산요금소	佛巖山料金所				Main Tollgate
13	Byeollae IC	별내나들목	別內나들목	Buram-ro(불암로)	2.39	35.30
14	Uijeongbu IC	의정부나들목	議政府나들목	National Route 3 Dongbu Urban Expressway Jangam station ( Line 7)	7.30	42.60		Uijeongbu
14-1	Howon IC	호원나들목	虎院나들목	National Route 3 Seobu-ro(서부로)	1.60	44.20
TN	Sapaesan TN	사패산터널	賜牌山터널				World's Largest Double-width Tunnel L=3,997m
15	Songchu IC	송추나들목	松楸나들목	National Route 39 Bukhansan-ro(북한산로)	6.20	50.40		Yangju
TG	Yangju TG	양주요금소	楊州料金所				Main Tollgate
16	Tongilro IC	통일로나들목	統一路나들목	National Route 1 (Tongil-ro / 통일로)	9.20	59.60		Goyang
16-1	Goyang JC	고양분기점	高陽分岐點	Pyeongtaek–Paju Expressway (Seoul-Munsan)
17	Goyang IC	고양나들목	高陽나들목	Local Route 356 Goyang City Hall Wondang station ( Line 3)	7.40	67.00
18	Ilsan IC	일산나들목	一山나들목	Goyang Jungang-ro(고양 중앙로) Daegok station ( Line 3, Gyeongui·Jungang)	2.97	69.97
19	Jayuro IC	자유로나들목	自由路나들목	National Route 77 (Jayu-ro / 자유로)	2.21	72.18
BR	Gimpo Bridge	김포대교	金浦大橋					Gimpo
20	Gimpo IC	김포나들목	金浦나들목	National Route 48	3.11	75.29
TG	Gimpo TG	김포요금소	金浦料金所				Main Tollgate
21	No-oji JC	노오지분기점	老梧地分岐點	Incheon Int'l Airport Expressway	3.75	79.04	Incheon Airport-bound Only	Gyeyang	Incheon
22	Gyeyang IC	계양나들목	桂陽나들목	National Route 39 Imhak station (● Incheon Line 1)	3.02	82.06
23	Seoun JC	서운분기점	瑞雲分岐點	Gyeongin Expressway	2.25	84.31
24	Jungdong IC	중동나들목	中洞나들목	Gilju-ro(길주로) Sangdong station ( Line 7) Sangdong Lake Park Incheon Samsan World Stadium	2.08	86.39		Bucheon	Gyeonggi
25	Songnae IC	송내나들목	松內나들목	National Route 46 Songnae station ( Line 1)	2.02	88.41
26	Jangsu IC	장수나들목	長壽나들목	National Route 39 Yeongdong Expressway Incheon Grand Park Munemi-ro(무네미로)	2.41	90.82		Namdong	Incheon
27	Siheung IC	시흥나들목	始興나들목	National Route 39	4.21	95.03		Siheung	Gyeonggi
TG	Siheung TG	시흥요금소	始興料金所				Main Tollgate
28	Anhyeong JC	안현분기점	鞍峴分岐點	2nd Gyeongin Expressway	2.66	97.69
28-1	Dori JC	도리분기점	道理分岐點	3rd Gyeongin Highway (Local Route 330)	4.81	102.50
29	Jonam JC	조남분기점	鳥南分岐點	Seohaean Expressway	4.44	106.94
30	Sanbon IC	산본나들목	山本나들목	National Route 47 Gunpo City Hall Sanbon station ( Line 4)	5.27	112.21		Gunpo
31	Pyeongchon IC	평촌나들목	平村나들목	National Route 1 National Route 47 Anyang City Hall Beomgye station ( Line 4)	4.13	116.34		Anyang
32	Hagui JC	학의분기점	鶴儀分岐點	Gwacheon-Bongdam Highway (Local Route 309)	2.86	119.20		Uiwang
SA	Uiwang-Cheonggye SA	의왕청계휴게소	義王淸溪休憩所
TG	Cheonggye TG	청계요금소	淸溪料金所				Main Tollgate
1	Pangyo JC	판교분기점	板橋分岐點	Gyeongbu Expressway( AH 1)	8.82	128.02	Busan-bound Only	Seongnam
Connected directly to Seongnam IC(Cycle Line)

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• Roads and expressways in South Korea
• Transportation in South Korea

• Seoul Beltway Corporation (Korean)
• MOLIT South Korean Government Transport Department