Winter happens.

Because of this, millions of dollars must be spent maintaining the roads during storms.According to the Pennsylvania Department of Transportation's Winter Services Guide, the winter budget for District 5, which covers Carbon, Schuylkill, Northampton, Monroe, Lehigh and Berks counties, is $16.4 million.Here are some facts from PennDOT's guide about how last winter measured up and what is available to make sure roads are drivable this winter.District 5 as a wholeSalt used last winter in the district: 90,440 tons.Salt used so far this winter in the district: 98,000 tons.Salt available for the remainder of winter: 20,000 tons.Snow lane miles maintained by PennDOT: 8,333.Equipment available: 15 anti-icing trucks, 10 graders, 200 snow plow trucks, 39 stockpiles and 43 loaders.CarbonAnnual winter budget: approximately $1.6 million, according to the 2013-2014 guide.Salt available for remainder of winter: 3,125 tons.Salt used last winter: 9,343 tons.Snow lane miles maintained by PennDOT: 517.Equipment available: three anti-icing trucks, one grader, 17 snow plow trucks, five stockpiles and five loaders.SchuylkillAnnual winter budget: approximately $3.8 million.Salt available for remainder of winter: 5,931 tons.Salt used last winter: 25,551 tons.Snow lane miles maintained by PennDOT: 1,514.Equipment available: three anti-icing trucks, two graders, 40 snow plow trucks, eight stockpiles and nine loaders.MonroeAnnual winter budget: approximately $3.3 millionSalt available for remainder of winter: 1,892 tons.Salt used last winter: 19,803 tons.Snow lane miles maintained by PennDOT: 1,266.Equipment available: three anti-icing trucks, two graders, 36 snow plow trucks, six stockpiles and six loaders.LehighAnnual winter budget: approximately $2.2 millionSalt used last winter: 9,336 tons.Snow lane miles maintained by PennDOT: 1,427.Equipment available: two anti-icing trucks, two graders, 37 snow plow trucks, seven stockpiles and seven loaders.NorthamptonAnnual winter budget: approximately $2.1 millionSalt used last winter: 8,774 tons.Snow lane miles maintained by PennDOT: 1,244.Equipment available: four anti-icing trucks, one grader, 37 snow plow trucks, four stockpiles and six loaders.