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Grand Southern Trunk Road (or) National Highways 45 is an arterial road in Tamil Nadu. It is also known as Chennai–Trichy Highway. The Road starts from Kathipara Junction in St Thomas Mount,
Chennai Chennai (, ), formerly known as Madras ( the official name until 1996), is the capital city of Tamil Nadu, the southernmost Indian state. The largest city of the state in area and population, Chennai is located on the Coromandel Coast of th ...
towards
Tiruchirappalli Tiruchirappalli () ( formerly Trichinopoly in English), also called Tiruchi or Trichy, is a major tier II city in the Indian state of Tamil Nadu and the administrative headquarters of Tiruchirappalli district. The city is credited with bein ...
. It branches out from
Anna Salai Anna Salai (), formerly known as St. Thomas Mount Road or simply Mount Road, is an arterial road in Chennai, India. It starts at the Cooum Creek, south of Fort St George, leading in a south-westerly direction towards St. Thomas Mount, and e ...
(previously known as Mount Road). The Road runs through important localities like Meenambakkam, Pallavaram,
Chrompet Chromepet is a suburban neighbourhood of Chennai, India. Located in the southern Chennai Metropolitan Area, it is governed by the Tambaram Municipal Corporation. Chromepet is located 22 km from the Chennai Central Railway Station, and lie ...
,
Tambaram Tambaram is a southern suburb of Chennai, India. Located in the Chengalpattu district of Tamil Nadu, it is governed by Tambaram City Municipal Corporation and is a part of the Chennai Metropolitan Area. Etymology Tambaram is an ancient town ...
,
Vandalur Vandalur is a census town and residential locality in southern part of the metropolitan city of Chennai, India. It is a neighbourhood in the southwestern part of Chennai. Vandalur serves as the southern gateway to Chennai city. It has the Arig ...
,
Kilambakkam Kilambakkam is a suburban locality in Chennai, Tamil Nadu, India. It is located between Vandalur and Urapakkam along Grand Southern Trunk Road (GST Road). It is the entrance gateway for the Chennai City from the southern end. CMDA is constructing ...
,
Guduvanchery Guduvancheri is a suburb located in the southern part of Chennai city, Tamil Nadu, India. It has a railway station on the South Line, Chennai Suburban, Chennai Beach–Chengalpattu section of the Chennai Suburban Railway Network. It is a muni ...
,
Paranur Paranur is a village in India near the busy GST Road or National Highway 45. It has a railway station and few hundred houses, and is 44 km from Chennai International Airport in Tirusulam. Paranur comes under Panchayat union/block of Katta ...
,
Chengalpattu Chengalpattu, previously known as Chingleput, is a city and the headquarters of Chengalpattu district of the state Tamil Nadu, India. The town is located near to the industrial and IT hub. It is the headquarters of the district and is away fro ...
,
Madurantakam Madurantakam () is the southernmost suburb of Chennai city and a municipality in Chengalpattu district in the Indian state of Tamil Nadu. The town is known for the artificial and second largest lake in Tamil Nadu, the Maduranthakam lake. It is ...
,
Tindivanam Tindivanam is a town and a municipality in Viluppuram district in the Indian state of Tamil Nadu. It is the second largest town in Villupuram District after the headquarters town Villupuram. Important roads from north to south (NH 45) Tami ...
,
Villupuram Viluppuram, Villupuram, or Vizhuppuram () is a Municipality and the administrative headquarters of Viluppuram district. Located south west of a Tiruvannamalai and north west of Cuddalore null The town serves as a major railway junction, ...
,
Vikravandi Vikravandi is a town in Viluppuram district in the Indian state of Tamil Nadu. Geography Vikravandi is located at . It has an average elevation of 44 metres (144  feet). The National Highway NH 132 connects Villupuram and Tindivanam, ...
Ulundurpet Ulundurpettai or Ulundurpet (உளுந்தூர்பேட் / உளுந்தூர்பேட்டை) is a Municipality in Ulundurpet taluk of kallakurichi district of Tamil Nadu, India. It is at the intersection of NH 68 an ...
and Perambalur.


Major Junctions

Chennai City #
Mount-Poonamallee Road St. Thomas Mount-Poonamallee Road, popularly known as the Mount-Poonamallee Road (SH-55), is an arterial road in the city of Chennai, India. It runs for 11 kilometres from Kathipara Junction to the NH 4 highway connecting St. Thomas Mount wit ...
near Kathipara Junction. # Mount-Medavakkam High Road in
St.Thomas Mount Parangimalai (known in English as St. Thomas Mount) is a small hillock in Chennai, Tamil Nadu, India, near the neighbourhood of Guindy and very close to Chennai International Airport. The ancient Syrian Christian community of India trace the ...
. # 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 Tambaram is a southern suburb of Chennai, India. Located in the Chengalpattu district of Tamil Nadu, it is governed by Tambaram City Municipal Corporation and is a part of the Chennai Metropolitan Area. Etymology Tambaram is an ancient town ...
. # Velachery Main Road and Mudichur Road in
Tambaram Tambaram is a southern suburb of Chennai, India. Located in the Chengalpattu district of Tamil Nadu, it is governed by Tambaram City Municipal Corporation and is a part of the Chennai Metropolitan Area. Etymology Tambaram is an ancient town ...
. #
Chennai Bypass Road The Chennai Bypass Road is a full-access controlled expressway that interconnects four radial Indian National Highways around Chennai, India covering a distance of from Perungalathur (near Tambaram) on NH-32 to puzhal on NH-16 via Maduravo ...
in Irumbuliyur. # Chennai Outer Ring Road in
Vandalur Vandalur is a census town and residential locality in southern part of the metropolitan city of Chennai, India. It is a neighbourhood in the southwestern part of Chennai. Vandalur serves as the southern gateway to Chennai city. It has the Arig ...
. # Vandalur-Kelambakkam Road in
Vandalur Vandalur is a census town and residential locality in southern part of the metropolitan city of Chennai, India. It is a neighbourhood in the southwestern part of Chennai. Vandalur serves as the southern gateway to Chennai city. It has the Arig ...
. # Guduvancheri Tiruporur # Kotteripattu Near Tindivanam


Developments

# NHAI to repair Palar Bridge in Grand Southern Trunk Road near Chengalpattu. # Double Deck Structure proposed between Airport and Irumbuliyur along GST Road. # NHAI set to rectify 18 accident-prone spots in GST Road.


References

Roads in Tamil Nadu {{India-road-stub