NH 75 (India)

NH 75 (India)
Country	IND
Type	NH
Route	75
Length km	397
Terminus a	Mangaluru
Terminus b	Bengaluru
States	Karnataka

NH 75 (India) is a National Highway in India connecting the port city of Mangalore (Mangaluru) on the Arabian Sea coast with the state capital Bengaluru (Bangalore) inland. The route traverses major urban centers such as Udupi, Karkala, Mudigere, Hassan and Mandya, crossing the Western Ghats and linking maritime infrastructure with inland industrial and technological hubs. NH 75 serves as a conduit between coastal trade nodes, agricultural districts, and information-technology corridors, integrating with national transport networks including the National Highways Authority of India and intersections with other major corridors.

Route description

NH 75 begins at Mangaluru near the New Mangalore Port area and proceeds northeast through the coastal district of Dakshina Kannada to Udupi and Kundapura, skirting hinterland towns such as Karkala before ascending the Sahyadri ranges near Agumbe and Charmadi ghats. The highway descends into the Malnad region reaching towns like Mudigere and Chikmagalur-adjacent routes, then continues eastward to the historic city of Hassan where it intersects arterial routes toward Mysuru and Kottayam-connected corridors. From Hassan the alignment proceeds via Arsikere and Turuvekere before entering the Bengaluru metropolitan region via Mandya and Ramanagara districts, terminating in central Bengaluru near IT and administrative zones. Along its length NH 75 crosses major rivers including the Netravati River, Ponnaiyar River, and tributaries of the Cauvery River, while passing ecological zones such as Kudremukh National Park-proximate landscapes and agricultural belts of Arecanut and Coffee cultivation.

History

The corridor that became NH 75 evolved from colonial-era trade tracks linking the Bombay Presidency and Madras Presidency port hinterlands to inland markets and princely states such as Mysore Kingdom. Post-independence rationalization of highways under MoRTH and the 1990s national expansion programs led to successive reclassifications and upgrades of state roads into the numbered National Highway network. Major upgrade phases in the 2000s and 2010s reflected investments tied to initiatives by the National Highways Development Project and funding instruments involving the World Bank and bilateral development agencies, with specific realignments to bypass congested urban centers such as Udupi and Hassan. Environmental clearances required coordination with agencies including the Ministry of Environment, Forest and Climate Change and regional forestry departments due to crossings of the Western Ghats biodiversity hotspot.

Major junctions and cities

NH 75 links several district headquarters and regional hubs: Mangaluru (terminus), Udupi, Karkala, Mudigere, Hassan, Arsikere, Mandya, and Bengaluru (terminus). Key junctions include intersections with NH 66 near Mangaluru providing coastal north-south connectivity, junctions with NH 69/state routes toward Ballari and Hubballi, connections to NH 48/Asian Highway routes around Bengaluru for long-distance freight, and links to state highways serving pilgrimage centers such as Sringeri and tourist circuits including Coorg (Kodagu) and Chikmagalur. Interchanges with major rail nodes like Mangaluru Junction railway station and Hassan Junction railway station integrate multimodal transfers with the Indian Railways network.

Road specifications and infrastructure

NH 75 features a mix of two-lane and four-lane carriageways, with four-laning and widening projects completed on high-traffic segments near Bengaluru and Mangaluru and targeted upgrades through the Western Ghats involving retaining structures, slope protection, and improved drainage. Pavement types vary from bituminous flexible pavements to mill-and-overlay resurfacing sections, with bridge works over major waterways using reinforced concrete and prestressed girders. Safety infrastructure includes signage adhering to Indian Roads Congress standards, road markings, vehicular restraint systems, and dedicated bus bays in peri-urban areas; recent projects introduced climbing lanes, truck lay-bys, and intersection grade separations near industrial estates and Peenya-adjacent zones. Toll plazas managed under public–private partnership concessions operate on selected segments to finance maintenance and capacity augmentation.

Maintenance and administration

Administration of NH 75 falls under the purview of the National Highways Authority of India with project execution by central agencies, state Public Works Departments of Karnataka, and private contractors working under EPC and HAM models. Routine maintenance, periodic resurfacing, and emergency response coordination involve entities such as the MoRTH regional offices, district administrations in Dakshina Kannada and Bengaluru Rural, and traffic police units from Mangaluru City Police and Bengaluru City Police. Funding derives from central allocations, toll revenue, and multilateral financing where applicable; land acquisition and resettlement processes are guided by statutes including the Right to Fair Compensation and Transparency in Land Acquisition, Rehabilitation and Resettlement Act, 2013.

Economic and traffic significance

NH 75 is strategic for movement of containerized cargo between New Mangalore Port and inland distribution centers in Bengaluru and the Mysuru-Mandya agricultural markets, supporting sectors such as IT industry clusters, textile supply chains, and plantation agriculture including Areca and Coffee exports. The highway relieves pressure on alternate corridors like NH 48 by providing a shorter coastal-to-inland axis, influences freight modal split with implications for Indian Railways freight routing, and underpins regional tourism to destinations such as Udupi temples, Agumbe rainforests, and hill stations near Chikmagalur. Traffic studies have documented mixed passenger and commercial flows with peak congestion near urban nodes and seasonal surges during festival periods linked to pilgrimage centers like Kateel and Shravanabelagola.

Category:National highways in India Category:Roads in Karnataka