| Mount Road | |
![]() Interactive map of Anna Salai | |
| Maintained by | Highways and Minor Ports Department Corporation of Chennai National Highways Authority of India |
|---|---|
| Length | 8 mi (13 km) |
| Coordinates | 13°03′52″N80°15′57″E / 13.064369°N 80.265808°E /13.064369; 80.265808 |
| South end | GST Road /Inner Ring Road,Mount-Poonamallee Road,Kathipara Junction atSt.Thomas Mount,Chennai |
| Major junctions | Pallavan Salai West Cooum River Road/Swami Sivananda Salai Wallaja Road/Blackers Road General Patters Road Binny Road/Spencers Plaza Whites Road/Greams Road Peters road Lloyds Road Nungambakkam High Road/Cathedral Road (Anna Flyover) Vijaya Raghava Road Sir Thyagaraya Road, T. Nagar/Eldams Road Cenotaph Road Venkatanarayana Road/Chamiers Road South Usman Road, T. Nagar Taluk Office Road, Velachery Main Road(Little Mount) Sardhar Patel Road Guindy Race Course Road Maduvankarai Bridge Road |
| North end | Flag Staff Road, Island Grounds,Chennai |

Anna Salai (Tamil:[aɳɳaːsaːlaɪ]), named forC. N. Annadurai, formerly known asSt. Thomas Mount Road or simplyMount Road,[1] is anarterial road inChennai, India. It starts at the Cooum Creek, south ofFort St George, leading in a south-westerly direction towardsSt. Thomas Mount, and ends at theKathipara Junction inGuindy.[2] Beyond the Kathipara Junction, a branch road arises traversing westwards toPoonamallee to form theMount-Poonamallee Road while the main branch continuing southwards toChennai Airport,Tambaram and beyond to formGrand Southern Trunk Road (GST Road orNH45). Anna Salai, which is more than 400 years old, is acknowledged as the most important road in Chennai city. The head offices of many commercial enterprises and public buildings are located along Anna Salai. It is the second longest road in Chennai, afterEVR Periyar Salai.
Several flyover projects were under consideration on the road, many of which have been shelved owing to the construction of theChennai Metro project, which runs along the median of the road.[3] Anna Salai Head Post office, one of the most important post offices in the city, is located on this road. It was established in 1854 as Mount Road SO as a non-gazetted delivery office. With the growth of commerce and urbanization, this SO was upgraded to gazetted in 1955. Nomenclature of this Head Post office was changed from Mount Road Head Post office to Anna Road Head Post office on 15 September 1974.

Anna Salai can be traced from at least the early 17th century,[4] and has its origins in a cart track which was used by the European employees of theBritish East India Company to travel from the factory atFort St George to the town ofSt Thomas Mount where the apostleSt Thomas is believed to have been martyred, according to Christian belief.[citation needed] The road, in its present form, took shape during the time ofCharles Macartney who served asGovernor of Madras. With the construction of Marmalong Bridge in 1724, the road started gaining prominence. In the following years, the road became part of the city's central business district which originally covered onlyGeorge Town.[5] Today, most of Chennai's business and corporate offices are located on Anna Salai.
In the 1700s, the road was lined with garden houses and large colonial mansions with balconies and verandas set amidst lush gardens.[6] By the 1800s, Mount Road has become the traders' area of the city of Madras while First Line Beach in Georgetown remained the seat of processing, shipping and manufacturing businesses. However, the business activities of Mount Road was responsible for the city's economic growth. Several giant firms had beginnings on Mount Road, from the Amalgamations group to the TVS group. The road's proximity to the Government House, the home of the Governor, and the palaces of the Nawabs of Arcot resulted in several firms selling cars and other luxury goods setting up shops on the road. Simpson & Co, which moved to its current location opposite Government Estate after 1875, began building carriages and coaches and then cars. In the early 1900s, the road became the entertainment hub for the British.[6] In 1903, the first steam-driven car was taken for its debut drive on Mount Road. To overcome the Great Depression of the 1930s, Simpon's introduced thehire purchase system for cars and trucks. In the 1930s, the TVS group, which was a travel operator in mofussil areas, was established in Madras by acquiring the Madras Auto Service property. In the 1940s, Anantharamakrishnan helped with the formation of Amalgamations & Co. The city's first skyscraper, theLIC Building, was built on Anna Salai in 1959. Several major firms were then established, namely, Spencers & Co, Victoria Family Hotel (the present location of the Indian Overseas Bank Headquarters) and Higginbothams.[1]
Anna Salai starts from theParktown area of Chennai city whereChennai Central railway terminus is situated. It, then, traversesthe Island with its statue of Sir Thomas Munro to the other side of the Coovum before entering the neighbourhoods ofThousand Lights andTeynampet areas. From Teynampet, it continues straight southwards toNandanam andSaidapet before traversing theMaraimalai Adigal Bridge across theAdyar River toLittle Mount and finally,Guindy.
Anna Salai is maintained by theTamil Nadu Highways Department. The road extends for a total of 11 kilometres and traverses the heart of the city.
By the 2010s, the stretch betweenParry's Corner andNandanam was used by over 16,000 vehicles during rush hour. Anna Salai is used by over 0.183 million vehicles every day.[7] The Metropolitan Transport Corporation in Anna Salai carries about 14,000 passengers per hour per direction.[8]
Anna Salai remains the road in the city experiencing second most number of accidents annually, next only to Jawaharlal Nehru Road (100 ft Inner Ring Road), with one person being injured every 1.13 days. Together, these roads account for almost 14 per cent of the 5,101 accidents that occurred in Chennai in 2010.[9] New traffic regulations have posed sizeable problems to motorists in recent times which was however introduced to streamline congestion issues.[10]