National Highway No. 4 (Thane-Chennai) duplicate

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National Highway 4 (Thane-Chennai)
National Highway 4 Route:
Thane - Nagaon - Panvel - Chauk - Khalapur - Lonavale - Karli - Wadgaon - Pune - Khed - Narsapur - Bhatghar - Khandala - Surul - Bhulnj - Satara - Borgaon - Ateet - Karad - Kasegaon - Peth - Top - Kolhapur - Kagal - Nipani - Kanagle - Sutkatti - Honga - Belgaum - Bagevadi - Kittur - Dharwad - Hubli - Pale - Chhabbi - Haveri - Motibennur - Ranibennur - Harihar - Devanagere - Anagodu - Bharamsagra - Lakashmisagara - Aymangala - Hiryur - Javanagondanahalli - Sira - Nelahalu - Urkeri - Tumkur - Dobbasapete - Nelamangla - Bangalore - Hoskote - Kolar - Mulbagal - Nangali - Palmaner - Bangarupalam - Chittoor - Abdulapuram - Ranipettai - Kanchipuram - SriPerumbudur - Poonamallee - Chennai
Major interchanges: 1). H 3 in Thane, 2). NH 8 in Mumbai, 3). NH 17 in Panvel, 4). NH 9 in Pune, 5). NH 50 in Pune, 6). NH 63 in Hubli, 7). NH 13 in Chitradurga, 8). NH 208 in Tumkur, 9). NH 48 in Bangalore, 10). NH 7 in Bangalore, 11). NH 209 in Bangalore, 12). NH 18 in Chittoor, 13). NH 5 in Chennai, 14). NH 45 in Chennai and 15). NH 205 in Chennai.
Out of the total length of 1235 kilometers, it traverses 371 km in Maharashtra, 658 km in Karnataka, 83 km in Andhra Pradesh and 133 km in Tamil Nadu.
The highway is known as Pune-Bangalore ( PB ) Road in some parts of Karnataka. The Mumbai-Pune section of the highway was supplemented by the Mumbai-Pune Expressway in 2000. The Pune bypass is 4 lane with 2 lane service roads on each side. NH4 now also bypasses the busy Katraj ghat in Pune by a Tunnel which saves almost one hour of travel on NH4.