Railway Operators: Union Pacific Railroad (42.2 %), North County Transit District;BNSF (13.1 %), Southern California Regional Rail Authority;Union Pacific Railroad (12.5 %), Southern California Regional Rail Authority;BNSF (12 %), Union Pacific Railroad;Amtrak (6.9 %), BNSF (5.7 %), Southern California Regional Rail Authority (2.3 %), North San Diego County Transit District (2.2 %), North San Diego County Transit District;BNSF (1.7 %), Southern California Regional Rail Authority;Union Pacific Railroad;LOSSAN Rail Corridor Agency (0.1 %), North County Transit DistricT (0.1 %), N/A (1.2 %)
Railway Users: N/A (100 %)
Electrification: not electrified (72.9 %), N/A (27.1 %)
Structures: 2.8 km in tunnels (0.5 %), 12.3 km on bridges (2.2 %), 1.1 km on embankments (0.2 %), 545.9 km on ground level (97.1 %)