Third Mainland Bridge
Pages using infobox bridge with empty coordinates parameter

Gadar Mainland ta Third Mainland ita ce gada mafi tsayi a cikin gadoji uku da suka hada Legas Island zuwa babban kasa, sauran sune gadar Eko da Carter.  Ita ce gada mafi tsawo a Afirka har zuwa shekara ta 1996 lokacin da aka kammala gadar a ranar 6 ga watan Oktoba da ke birnin Alkahira. Gadar ta taso ne daga Oworonshoki wadda ta hade da babban titin Apapa -Oshodi da kuma babbar hanyar Legas zuwa Ibadan, kuma ta kare ne a mahadar Adeniji Adele dake tsibirin Legas.  Hakanan akwai hanyar haɗi ta tsakiyar gada da ke kaiwa zuwa Herbert Macaulay Way, Yaba. Kamfanin Julius Berger Nigeria PLC ne ya gina gadar. Shugaban kasa Shehu Shagari ne ya kaddamar da aikin kashi na daya a shekarar 1980 kuma shugaba Ibrahim Babangida ya kammala ta a shekarar 1990; yana auna kusan 11.8 km tsawon.

A shekara ta 2006, matafiya da yawa sun ba da rahoton cewa gadar Mainland ta Third Mainland tana girgiza sosai, wanda ke nuna cewa tana buƙatar kulawar gaggawa.  Sakamakon haka, an fara aikin gyaran gadar a lokuta daban-daban, wanda ya kai ga rufe gadar ta wani ɗan lokaci.  A watan cikin Janairu 2013, an kammala wannan aikin.

Kwanan nan, an yi ta rade-radin tsaga a kan gadar. Sai dai hukumomi sun musanta hakan.  Gadar mai layi takwas ta samu sabon salo a lokacin aikin gyara na ƙarshe, inda aka zana jagorar gadar da launukan Najeriya: kore, fari, kore, da kuma zanen gabaɗaya don sabon salo. An kammala aikin gyaran gadar kuma an sake bude gadar a ranar 30 ga Oktoban shekarar 2012.

Gadar Third Mainland tana da yawan zirga-zirgar ababen hawa a ranakun mako, domin yawancin mazauna yankin suna tafiya da kuma tashi daga babban yankin Legas zuwa tsibirin, wanda cibiyar kasuwanci ce a jihar Legas. Mazauna garuruwan Ikeja, Agboyi-Ketu, Ikorodu, Isheri, Oworonshoki, Gbagada, Yaba, Maryland da kuma Oshodi sukan yi amfani da gadar a lokacin tafiyarsu ta yau da kullun. Gadar Mainland ta Third Mainland wani muhimmin bangare ne na zirga-zirgar yau da kullum na Legas, don haka tana bukatar a rika gyarawa kullum. Har ila yau, ya zama babban alamar Legas, tana ba da ra'ayoyi daban-daban game da Legas-Lagon Legas, Jami'ar Legas da bakin ruwa da Makoko, wani gari mai ban sha'awa da aka gina a kan tafkin Legas.

A ranar 6 ga watan Yuli, 2020, an sanar da cewa za a rufe gadar Mainland ta Uku na tsawon watanni shida saboda gyara.  Za a sake yin wani gyaran gadar ne daga ranar Juma’a 24 ga Yuli, 2020 zuwa 24 ga Janairu, 2021 don maye gurbin belin da kuma gadar da aka gama.

Gini 
A shekarun 1970, bayan kawo karshen yakin basasar Najeriya, an samu karin farashin man fetur kuma Najeriya ta shiga cikin sauye-sauyen tattalin arziki. Bukatar ingantattun ababen more rayuwa musamman a babban birnin Legas da ya sha fama da cunkoso a tashar jiragen ruwa sannan kuma an samu karuwar zirga-zirgar ababen hawa ne ya haifar da wata babbar gada ta uku da ta hade tsibirin Legas mai cin gashin kanta da bunkasar mazauna birane. babban birnin Legas.

An ba da kwangila don gada ta uku a cikin shekarar 1976. An yi aikin gina gadar a matakai. An yi kwangilar kashi na farko zuwa ga haɗin gwiwar PGH, wani kamfani wanda ya ƙunshi, Impresit Girola da Borini Prono, yayin da Trevi Group ya ba da sabis na tallafi don tarawa. An tsara zangon farko na tsawon kilomita 5, wanda ya fara daga tsibirin kuma ya ƙare a Ebute Metta, zuwa ￼￼Yaba.￼￼   Gadar tana daga sama zuwa kilomita 3 a saman ruwa kuma an yi ta daga simintin da aka riga aka matsa masa. Tulin tushe yana da zurfin zurfin tsakanin mita 36 zuwa 54 kuma diamita na tulin ya dogara ne akan yuwuwar ɗaukar hanya, ana amfani da diamita na 1500mm don babbar gadar da ke ratsa tafkin Legas da kuma hanyar zamewa da kusanci, diamita tari tana tsakanin 800mm zuwa 1200mm. An kammala kashi na farko a cikin 1980. 

Kashi na biyu daga Ebute-Metta zuwa Oworonshoki an ba Julius Berger a Najeriya.

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