Costs of a Rail Siding - ACW Railway Company. No.2 Relay 132/136 lb rail $700 per ton 245 tons $171,500 7"x9' Ties on 21" Centers $55.22 per tie 3,017 ties $166,598.74 Ballast (Rock) $27.00 per ton 6,000 tons $162,000.00 Spikes 68 Kegs $65.00 per keg 68 kegs $4,000 Labor Varies by Contractor Grading.