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Gradient profile and mileages

932 bytes added, 16:37, 19 March 2018
Bewdley to Kidderminster Curve (BYK): Note that mileposts on old OS maps do not agree with ELRs
===Bewdley to Kidderminster Curve (BYK)===
The [[Kidderminster Loop Line | Loop]] between Kidderminster and Bewdley does not lie on a direct route from London Paddington. Distances to places on the Loop as set out in the [[Engineer's Line References]] were therefore measured on the basis that you would proceed towards Kidderminster and after passing [[Kidderminster Junction signal box#Kidderminster Junction | Kidderminster Junction]] at 135 miles 9 chains, reach a reversal point 12 chains further on. Returning over the 12 chains to the Junction on the loop line (now 135 miles 33 chains), mileages are measured until Bewdley South Junction is reached at 138 miles 21 chains. However Bewdley South Junction was only 137 miles 12 chains via the direct route from Hartlebury; this lower figure becomes the base mileage for measuring distances onwards towards Bridgnorth and Tenbury. This accounts for the change in mileage at Bewdley South Junction in the profile above.
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Early OS maps show the locations of mileposts on the loop line which do not accord with this method of calculation. Mileposts appear just east of Rifle Range Halt (see map below), just west of [[Stourport Road Bridge]] (the location of [[Foley Park Halt]]), and just south of Kidderminster Junction (see map below). This discrepancy could be accounted for if the earlier mileages were instead based on a reversal at Bewdley and then travelling towards Kidderminster, ie:
 
137.12 Bewdley South Junction SVB<br>
137.15 Reversal point (assumed)<br>
137.18 Bewdley South Junction BYK<br>
137.76 Rifle Range Halt (placing milepost 138 just to the east)<br>
139.07 Foley Park Halt (placing milepost 139 just to the west)<br>
140.06 Kidderminster Junction BYK (placing milepost 140 just to the south)<br>
 
<gallery>
Loop Line map.jpg|Milepost near the site of Rifle Range Halt
</gallery>
===Mileposts===
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