Grand Southern Trunk Road
{{Use dmy dates|date=April 2023}}
{{infobox road
|country=IND
|type=NH
|route=45
|alternate_name= Grand Southern Trunk Road
Chennai–Trichy-Dindigul-Theni Highway
|translation= மாபெரும் தெற்கு வழித்தடம்
|state = Tamil Nadu
}}
Grand Southern Trunk Road or National Highway 45 is an arterial road in the Indian state of Tamil Nadu. It is also known as Chennai–Perambalur-Trichy-Dindigul-Theni Highway.{{Cite web |title = Tamilnadu Highways |url = https://www.tnhighways.gov.in/index.php/en/list-of-roads |website = www.tnhighways.gov.in |access-date = 8 April 2023 |archive-date = 17 December 2020 |archive-url = https://web.archive.org/web/20201217114232/https://www.tnhighways.gov.in/index.php/en/list-of-roads |url-status = dead }} The road starts from Kathipara Junction in St Thomas Mount, Chennai towards Perambalur, Trichy, Dindigul and Theni. It branches out from Anna Salai (previously known as Mount Road).{{Cite news |date = 14 April 2021 |title = ‘Grand Western Trunk Road is old name of EVR Periyar Salai’ |language = en-IN |work = The Hindu |url = https://www.thehindu.com/news/cities/chennai/grand-western-trunk-road-is-old-name-of-evr-periyar-salai/article34314273.ece |access-date = 24 January 2022 |issn = 0971-751X }}
The road runs through important localities like Meenambakkam, Pallavaram, Kadaperi, Tambaram, Vandalur, Kilambakkam, Guduvanchery, Paranur, Chengalpattu, Madurantakam, Tindivanam, Villupuram, Vikravandi, Ulundurpet, Perambalur, Trichy, Dindigul, and Theni.
Major junctions
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Chennai City
- Mount-Poonamallee Road near Kathipara Junction
- Mount-Medavakkam High Road in St.Thomas Mount
- Pallavaram-Kundrathur-Poonamallee Road (Pammal Main Road) in Pallavaram
- Pallavaram-Thiruneermalai Road in Pallavaram
- Pallavaram-Thuraipakkam Radial Road in Pallavaram
- Chitlapakkam and Hasthinapuram Main Road near MIT Bridge Along GST Road
- Gandhi Road in Tambaram
- Velachery Main Road and Mudichur Road in Tambaram
- Chennai Bypass Road in Irumbuliyur
- Chennai Outer Ring Road in Vandalur
- Vandalur-Kelambakkam Road in Vandalur
- Guduvancheri Tiruporur road
Outside Chennai
- Kotteripattu Near Tindivanam
Developments
- NHAI to repair Palar Bridge in Grand Southern Trunk Road near Chengalpattu.{{Cite web |first = Ram |last = Sundaram |date = 25 July 2020 |title = NHAI to repair Palar Bridge on Tambaram-Chengalpet road |department = Chennai News |url = https://timesofindia.indiatimes.com/city/chennai/nhai-to-repair-palar-bridge-on-tambaram-chengalpet-road/articleshow/77165621.cms |access-date = 20 August 2020 |website = The Times of India |language = en }}
- Double Deck Structure proposed between Airport and Irumbuliyur along GST Road.{{Cite web |first = Yogesh |last = Kabirdoss |date = 10 August 2020 |title = Double deck structure proposed between airport, Chennai bypass |department = Chennai News |url = https://timesofindia.indiatimes.com/city/chennai/double-deck-structure-proposed-between-airport-chennai-bypass/articleshow/77459114.cms |access-date = 20 August 2020 |website = The Times of India |language = en }}
- NHAI set to rectify 18 accident-prone spots in GST Road.{{Cite web |first=Ram |last = Sundaram |date=4 August 2020 |title = NHAI set to rectify 18 accident-prone spots |department = Chennai News |url = https://timesofindia.indiatimes.com/city/chennai/nhai-set-to-rectify-18-accident-prone-spots/articleshow/77342746.cms |access-date = 20 August 2020 |website = The Times of India |language = en }}