sentences:  In addition, there are private airstrips at Sedam Airport, Koppal Airport and Harihar Airport.Shivamogga Airport, Hassan Airport, Bijapur Airport are being built under the Public Private Partnership (PPP) model.The total length of rail track in Karnataka is 3089 km For a long time after independence, the railway network in the state was under the Southern and Western railway zones which were headquartered at Chennai and Mumbai respectively.