This signal box was south of Bonnyrigg station. It controlled the short line to Polton Colliery No 2 and Phillip's Siding.
The signal box was on the north side of Bonnyrigg Gatehouse level crossing, on the north/west side of the line. The gatehouse was directly opposite on the other side of the road.
Both were approached from the north.
Phillips Siding was on the north/west side of the line, just north of the box. There was a trailing crossover on the double track line, opposite the box.
A little further north/east was the Polton Colliery No 2 mineral line which ran south. It led off from a single lead junction at the south end of Bonnyrigg station. The single track mineral line had an exchange yard of three looped sidings next to the junction.
Further south was a reversing spur for Polton Colliery No 1. Further south still was another reversing spur for Dalhousie Colliery. Both were on the north/west side of the line.
The box was reduced to a gate box in 1929.
The box closed in 1965. The line closed in 1967.
Today a road still crosses the former trackbed here, now a footpath.
Nearby stations Bonnyrigg Broomieknowe Lasswade South Esk Dalhousie Eskbank Polton Eskbank and Dalkeith Newtongrange [1st] Newtongrange Rosewell and Hawthornden Glenesk Loanhead Dalkeith Sheriffhall [2nd] | Phillip^s Siding Polton Colliery No 2 Polton Colliery No 1 Bonnyrigg Catchpoints Bonnyrigg Carpet Factory Eldin Colliery Lasswade Tunnel Dalhousie Colliery Esk Valley Junction Lasswade Viaduct St Leonards Mill Kevock Mill Kevock Siding Hardengreen Viaduct Dalhousie Catchpoints |
Location names in dark blue are on the same original line. |