Hartlepool
- Seal Sands Branch
- Seaton Snook Branch
- Cliff House Branch
- Burn Road Branch
- Hartlepool to West Hartlepool
- Cemetery South to North Curve
- Hartlepool East Goods Branch
- Seabanks Branch
- Seaham Station Branch
- Swine Lodge Branch
Ferryhill
- Ferryhill and Pelaw
- Ferryhill and Hartlepool Branch
- Wingate Colliery Branch
- Ferryhill and Coxhoe Branch
- Tursdale Colliery Branch
- Broomside Branch
- Ferryhill and Stockton
Stockton
- Norton East to West
- Stockton and Sunderland Branch
- Wingate Curve
- Castle Eden Curve
- Carlton Loop
- Simpasture Branch
- Chilton Branch
Bishop Auckland
- Bishop Auckland and Ferryhill
- West Durham Railway
- Hunwick Newfield Willington Collieries Branch
- Bowden Close Colliery Branch
- Page Bank Colliery Branch
- Bishop Auckland and Durham
- Bishop Auckland West to North
- Bishop Auckland Goods Branch
- Dearness Valley Branch
- Bishop Auckland and Weardale
- Tunnel Branch
- Black Boy Branch
- Auckland Park Colliery Branch
- Sunniside Bank Foot Branch
- Stanley Branch
- Sunniside Branch
- Hedleyhope Branch
- Waskerley Branch
- Ashes Branch
- White Hall Branch