Railway Operators: Union Pacific Railroad (56.3 %), UP (14.1 %), BNSF Railway (11.5 %), Southern California Regional Rail Authority;Union Pacific Railroad (3.2 %), Union Pacific Railroad;Amtrak (1.8 %), Sound Transit (0.9 %), BNSF (0.6 %), Peninsula Corridor Joint Powers Board;Union Pacific Railroad;Amtrak (0.3 %), Southern California Regional Rail Authority (0.3 %), Peninsula Corridor Joint Powers Board;Union Pacific Railroad (0.2 %), Portland Terminal Railroad Company (0 %), Southern California Regional Rail Authority;Union Pacific Railroad;LOSSAN Rail Corridor Agency (0 %), Union Pacific (0 %), N/A (10.8 %)
Railway Users: mixed traffic (0.6 %), passenger traffic (0.1 %), freight traffic (0 %), N/A (99.3 %)
Electrification: not electrified (86.8 %), N/A (13.2 %)
Structures: 21.3 km in tunnels (1 %), 41.5 km on bridges (1.9 %), 4.9 km on embankments (0.2 %), 0 km in cuttings (0 %), 2146.4 km on ground level (96.9 %)