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Correct date for frame
== History ==
The box was built in its current position in 1883<ref name="SRSSignalBoxRegister_Update9">Signal Box Register, Volume 1: Great Western, revised 2011 edition, Signalling Record Society (plus correction sheet #9 )</ref>, and has not changed significantly in that time, with the exception of modifications to the interlocking of the lever frame. The box previously controlled access to colliery exchange sidings, the site of which is now the Engine House. Two ground frames once existed in the section to Hampton Loade, allowing access to [[Alveley Sidings]], namely Alveley North and Alveley South ground frames. An intermediate token instrument was provided to allow trains to be locked in to these sidings. The North ground frame was taken out of use in 1974, whilst the South ground frame survived until an unknown later date, released on the Highley-Hampton Loade token.
The box closed in 1969 with the cessation of coal traffic to Alveley, and was brought back into use on 02/03/1974 with the commissioning of ETT working to Hampton Loade. Long section working to Bridgnorth was brought into use in 1975, and ETT working to Arley and Bewdley North was commissioned on 10/04/1976.
=== Lever Frame ===
Highley retains its original 14 lever McKenzie and Holland 1873 patent lever frame, with 11 working levers, 3 spare, and no spaces. The interlocking was replaced in 1903 with more standard GWR 5-bar vertical tappet interlocking by the GWRin 1947.<ref name="SRSSignalBoxRegister_Update9" />
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File:Highley box interior 2.jpg | Interlocking mechanism
