National Highway 648 (India)
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|Length||143 km (89 mi)|
|States||Karnataka, Tamil Nadu|
|Doddaballapur - Devanahalli - Sarjapura - Bagalur|
- "Rationalisation of Numbering Systems of National Highways" (PDF). New Delhi: Department of Road Transport and Highways. Archived from the original (PDF) on 4 December 2018. Retrieved 3 April 2012.