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 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 t ...

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 be ...

. 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 Meenambakkam is a southern neighbourhood of Chennai in the Indian state of Tamil Nadu. It is home to Chennai International Airport, the Airports Authority of India regional office, and the DGQA Complex. It was under the reign of the Pallava k ...

Pallavaram Pallavaram (originally Pallava Puram) is a residential neighborhood of Chennai, India. Pallavaram was a part of Alandur until August 2015 and since then a new taluk with headquarters at Pallavaram was created. The town is known for its cant ...

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 to ...

, Vandalur,

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, Paranur,

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 ...

, Madurantakam,

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

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 Perambalur is a town in the Indian state of Tamil Nadu. It is the headquarters of Perambalur district and Perambalur ''taluk'' (sub-district). census, the town had a population of 49,648. There are a set of 11th century Buddha statues aro ...

Major Junctions

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-Thiruneermalai Road in

. # Pallavaram-Thuraipakkam Radial Road in

. # Chitlapakkam and Hasthinapuram Main Road near MIT Bridge Along GST Road. # Gandhi Road in

. # Velachery Main Road and Mudichur Road in

. #

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 Madura ...

in Irumbuliyur. # Chennai Outer Ring Road in Vandalur. # Vandalur-Kelambakkam Road in Vandalur. # 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