Except as provided in § 185.4 (relating to six-axle combinations) no combination registered and having a gross weight in excess of 73,280 pounds shall be driven on a highway with a weight on any group of consecutive axles in excess of the applicable weight shown on the following table:

BRIDGE FORMULA TABLEFor Determining Maximum Axle Weights When Registeredand Gross Weight Exceed 73,280 Pounds Maximum load in pounds carried on any Center-to-center distance ingroup of 2 or more consecutive axles feet between the first and last axles of any group of 2 or more consecutive axles2 axles3 axles4 axles5 axles6 axles7 axles 4 …34,000 5 …35,000 6 …36,000AXLE GROUPS IN 7 …37,000THESE SPACINGS 8 …38,000…42,000IMPRACTICAL 9 …39,00043,000 10 …40,00043,500 11 …44,500 12 …45,000…50,000 13 …46,00050,500 14 …46,50051,500 15 …47,50052,000 16 …48,000…52,500…58,000 17 …49,00053,50058,500 18 …49,50054,00059,500 19 …50,50054,50060,000 20 …51,000…55,500…60,500…66,000 21 …52,00056,00061,00066,500 22 …52,50056,50062,00067,000 23 …53,50057,50062,50068,000 24 …54,000…58,000…63,000…68,500…74,000 25 …55,00058,50063,50069,00074,500 26 …55,50059,50064,50069,50075,000 27 …56,50060,00065,00070,00076,000 28 …57,000…60,500…65,500…71,000…76,500 29 …58,00061,50066,00071,50077,000 30 …58,50062,00067,00072,00077,500 31 …59,50062,50067,50072,50078,000 32 …60,000…63,500…68,000…73,000…78,500 33 …64,00068,50074,00079,500 34 …64,50069,50074,50080,000 35 …65,50070,00075,000 36 …68,000…70,500…75,500 37 …68,00071,00076,000 38 …68,00072,00077,000 39 …68,00072,50077,500 40 …68,500…73,000…78,000 41 …69,50073,50078,500 42 …70,00074,50079,000 43 …70,50075,00080,000 44 …71,500…75,500 45 …72,00076,000 46 …77,000 47 …77,500 48 …78,000 49 …78,500 50 …79,500