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National Highway 66 (India)
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National Highway 66 (India)
National Highway 66, commonly referred to as NH 66 (erstwhile NH-17 and a part of NH-47), is a mostly 4 lane 1640 km (1020 miles) long busy National Highway that runs roughly north–south along the western coast of India, parallel to the Western Ghats. It connects Panvel, a city east of Mumbai to Kanyakumari via Mangaluru, passing through the states of Maharashtra, Goa, Karnataka, Kerala and Tamil Nadu. Also the road passes through Mahe district, the third district of Puducherry (union territory).
The highway is undergoing a major overhaul in Kerala, where the National Highways Authority of India (NHAI) is developing a six-lane national highway of international standard with a width of 45 metres. The complete 645-km stretch from Thalappady at the Karnataka border to Karode at the Tamil Nadu border is being widened to six lanes as part of the Bharatmala Pariyojana. In March 2026, major sections including the Thalappady–Chengala stretch and the Kozhikode Bypass were inaugurated, significantly easing coastal connectivity. Although the project faced unique challenges due to Kerala's high population density and land costs, leading to a reduced 45-metre right-of-way compared to the national 60-metre standard, the state government has supported the expansion by covering 25% of the land acquisition costs. Most remaining stretches are slated for completion by mid-2026.
The Ministry of Road Transport & Highways, Government of India has proposed a greenfield (i.e., new and parallel) access controlled expressway corridor connecting the port cities of Mangaluru-Karwar-Panaji as part of the Indian National Expressway Network. This expressway will be parallel to NH-66 and will be mainly located in coastal Karnataka. It is expected to be a 6/8 lane access-controlled 3D right-of-way designed expressway.
It starts at Panvel, at the junction of National Highway 48 (old NH4), and ends at Kanyakumari. NH-66 mainly traverses through the west coast of India, sometimes touching the shores of the Arabian Sea. The NH-66 touches the Arabian Sea at Maravanthe in Karnataka, Thalassery, and Alappuzha in Kerala. It passes through the Indian states of Maharashtra, Goa, Karnataka, Kerala and Tamil Nadu. The National Highway 66 (previously numbered NH-17) connects cities, towns, and major villages of different states as follows:
Panvel, Pen, Mangaon, Mahad, Poladpur, Khed, Chiplun, Sangameshwar, Ratnagiri, Lanja, Rajapur, Kanakvali, Kudal, Sawantwadi.
Karawar, Ankola, Kumta, Honnavar, Manki, Murudeshwara, Bhatkal, Shiroor, Bainduru, Uppunda, Kirimanjeshwara, Navunda, Maravanthe, Hemmadi, Talluru, Kundapura, Koteshwara, Kota, Saligrama, Brahmavara, Udupi, Kapu, Padubidri, Mulki, Surathkal, Mangaluru, Thokottu, Ullal, Kotekar, Talapady.
Uppala, Kasaragod, Kanhangad, Payyannur Pariyaram, Taliparamba, Dharmashala, Kannur, Dharmadam, Thalassery, Mahe, Vatakara, Payyoli, Koyilandi, Kozhikode, Ramanattukara, Tenhipalam, Kottakkal, Puthanathani, Valanchery, Kuttippuram, Thavanur, Ponnani, Chavakkad, Vadanappally, Kodungallur, Moothakunnam, North Paravur, Koonammavu, Varapuzha, Cheranallur, Edappally, Kochi, Aroor, Cherthala, Alappuzha, Ambalapuzha, Haripad, Kayamkulam, Karunagappally, Chavara, Neendakara, Kollam, Mevaram, Kottiyam, Chathannoor, Kallambalam, Attingal, Kazhakkoottam, Thiruvananthapuram, Balaramapuram, Neyyattinkara, Parassala.
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National Highway 66 (India)
National Highway 66, commonly referred to as NH 66 (erstwhile NH-17 and a part of NH-47), is a mostly 4 lane 1640 km (1020 miles) long busy National Highway that runs roughly north–south along the western coast of India, parallel to the Western Ghats. It connects Panvel, a city east of Mumbai to Kanyakumari via Mangaluru, passing through the states of Maharashtra, Goa, Karnataka, Kerala and Tamil Nadu. Also the road passes through Mahe district, the third district of Puducherry (union territory).
The highway is undergoing a major overhaul in Kerala, where the National Highways Authority of India (NHAI) is developing a six-lane national highway of international standard with a width of 45 metres. The complete 645-km stretch from Thalappady at the Karnataka border to Karode at the Tamil Nadu border is being widened to six lanes as part of the Bharatmala Pariyojana. In March 2026, major sections including the Thalappady–Chengala stretch and the Kozhikode Bypass were inaugurated, significantly easing coastal connectivity. Although the project faced unique challenges due to Kerala's high population density and land costs, leading to a reduced 45-metre right-of-way compared to the national 60-metre standard, the state government has supported the expansion by covering 25% of the land acquisition costs. Most remaining stretches are slated for completion by mid-2026.
The Ministry of Road Transport & Highways, Government of India has proposed a greenfield (i.e., new and parallel) access controlled expressway corridor connecting the port cities of Mangaluru-Karwar-Panaji as part of the Indian National Expressway Network. This expressway will be parallel to NH-66 and will be mainly located in coastal Karnataka. It is expected to be a 6/8 lane access-controlled 3D right-of-way designed expressway.
It starts at Panvel, at the junction of National Highway 48 (old NH4), and ends at Kanyakumari. NH-66 mainly traverses through the west coast of India, sometimes touching the shores of the Arabian Sea. The NH-66 touches the Arabian Sea at Maravanthe in Karnataka, Thalassery, and Alappuzha in Kerala. It passes through the Indian states of Maharashtra, Goa, Karnataka, Kerala and Tamil Nadu. The National Highway 66 (previously numbered NH-17) connects cities, towns, and major villages of different states as follows:
Panvel, Pen, Mangaon, Mahad, Poladpur, Khed, Chiplun, Sangameshwar, Ratnagiri, Lanja, Rajapur, Kanakvali, Kudal, Sawantwadi.
Karawar, Ankola, Kumta, Honnavar, Manki, Murudeshwara, Bhatkal, Shiroor, Bainduru, Uppunda, Kirimanjeshwara, Navunda, Maravanthe, Hemmadi, Talluru, Kundapura, Koteshwara, Kota, Saligrama, Brahmavara, Udupi, Kapu, Padubidri, Mulki, Surathkal, Mangaluru, Thokottu, Ullal, Kotekar, Talapady.
Uppala, Kasaragod, Kanhangad, Payyannur Pariyaram, Taliparamba, Dharmashala, Kannur, Dharmadam, Thalassery, Mahe, Vatakara, Payyoli, Koyilandi, Kozhikode, Ramanattukara, Tenhipalam, Kottakkal, Puthanathani, Valanchery, Kuttippuram, Thavanur, Ponnani, Chavakkad, Vadanappally, Kodungallur, Moothakunnam, North Paravur, Koonammavu, Varapuzha, Cheranallur, Edappally, Kochi, Aroor, Cherthala, Alappuzha, Ambalapuzha, Haripad, Kayamkulam, Karunagappally, Chavara, Neendakara, Kollam, Mevaram, Kottiyam, Chathannoor, Kallambalam, Attingal, Kazhakkoottam, Thiruvananthapuram, Balaramapuram, Neyyattinkara, Parassala.