{{short description|Line of the Zhengzhou Metro}} {{Infobox rail line | name = | other_name = Line 9<br>Suburban line | logo = {{huge|{{rint|zhengzhou|c}}}} | logo_width = | color = {{rcr|ZZM|c}} | color2 = | image = 20190716 A train on Zhengzhou Metro Chengjiao Line approaching Mengzhuang Station 02.jpg | image_width = 300px | image_alt = | caption = A train of Zhengzhou Metro running on Chengjiao line | type = Rapid transit | system = Zhengzhou Metro | status = Operational | locale = Zhengzhou, Henan, China | start = {{stl|ZZM|Nansihuan}} (through service {{stl|ZZM|Jiahe}}) | end = Zhengzhou Hangkonggang Railway Station | stations = 19 (18 in operation) | routes = | daily_ridership = | open = {{Start date and age|2017|1|12|df=yes}} | close = | owner = | operator = Zhengzhou Metro Group Corporation | character = Underground and elevated | depot = Mengzhuang Depot | stock = | linelength = {{convert|40.84|km|mi|2|abbr=on}}<ref name=201701chengjiao /> | tracklength = | tracks = 2 | gauge = {{track gauge|sg}} | electrification = | speed = | elevation = | website = | map = {{Chengjiao line RDT}} | map_state = collapsed }} The '''Chengjiao line''' of the Zhengzhou Metro ({{zh|s=郑州地铁城郊线|p=Zhèngzhōu Dìtiě Chéngjiāo Xiàn}}), planned to be part of '''Line 9''' in the future, is a rapid transit line in Zhengzhou. It was opened on 12 January 2017. This line is {{convert|40.84|km|mi|2|abbr=on}} long with 19 stations (16 stations in operation).<ref>{{cite web| title=郑州地铁12日开通两条新线路 这四站或越站通过| url=http://www.ha.xinhuanet.com/hotnews/20170111/3616249_c.html| publisher=Xinhua| accessdate=18 January 2017| language=Chinese}}</ref>
Through services are operated on Line 2 and Chengjiao line, although they are classified as separate lines.<ref>{{cite web| title=郑州地铁2号线将与城郊铁路实行大小交路套跑运行| url=http://www.ha.xinhuanet.com/news/20170110/3614486_c.html| publisher=Xinhua| accessdate=18 January 2017| language=Chinese}}</ref>
300px|thumb|Map of Zhengzhou Metro Chengjiao Line
==Opening timeline== {| class="wikitable" style="border-collapse: collapse; text-align: right;" !Segment!!Commencement!!Length!!Station(s)!!Name |- |style="text-align: left;"| Nansihuan — Xinzheng International Airport | 12 January 2017 | {{convert|31.7|km|mi|2|abbr=on}}<ref name=201701chengjiao>{{cite web|url=http://www.zhengzhou.gov.cn/html/www/news4/20170111/355201.html|date=2017-01-11|title=郑州地铁1号线二期和城郊铁路一期将开通试运营|access-date=2019-11-20|archive-url=https://web.archive.org/web/20180414011346/http://www.zhengzhou.gov.cn/html/www/news4/20170111/355201.html|archive-date=2018-04-14|url-status=dead}}</ref> | 11 |style="text-align: left;"| Phase 1 |- |style="text-align: left;"| Kangpinghu | 16 November 2017 | Infill station | 1 |style="text-align: left;"| |- |style="text-align: left;"| Gangqu North | 12 December 2020 | Infill station | 1 |style="text-align: left;"| |- |style="text-align: left;"| Xinzheng International Airport — Zhengzhou Hangkonggang Railway Station | 20 June 2022<ref>{{cite web |url=https://share.hntv.tv/news/0/1538529858991001601|title=郑州地铁城郊铁路6月20日起延伸至郑州航空港站|archive-url=https://web.archive.org/web/20220619152009/https://share.hntv.tv/news/0/1538529858991001601|archive-date=2022-06-19}}</ref> | {{convert|8.98|km|mi|2|abbr=on}}<ref name=news20220618>{{cite web|url=http://ha.news.cn/news/2022-06/18/c_1128752701.htm|title=城郊铁路二期即将开通 可直达高铁郑州航空港站|date=2022-06-18|archive-url=https://web.archive.org/web/20220618025702/http://ha.news.cn/news/2022-06/18/c_1128752701.htm|archive-date=2022-06-18 }}</ref> | 3<!--Terminal 3 station is not open--> |style="text-align: left;"| Phase 2 |- |style="text-align: left;"| Xiaoqiao & Hua'nancheng Dong<ref>{{cite web|url=https://www.zzrbnews.com/chengshi/202303/content-30e4ea30402f4ad3.html |title=郑州地铁小乔站、华南城东站明日开通 |date=2023-09-21 |archive-date=2023-09-21 |archive-url=https://archive.today/20230921193117/https://www.zzrbnews.com/chengshi/202303/content-30e4ea30402f4ad3.html}}</ref> | 22 September 2023 | Infill stations | 2 |style="text-align: left;"| |}
==Stations== {{Line 2 and Chengjiao line of Zhengzhou Metro}}
==References== {{Reflist}}
{{Central Henan transit}}
Category:Chengjiao line, Zhengzhou Metro Category:Railway lines opened in 2017 Category:2017 establishments in China Category:Airport rail links in China Category:Zhengzhou Metro lines