How Much Does Crushed Stone or Gravel Cost? .
A 12''x25'' singlecar gravel driveway costs 300 to 900 to install 4" to 8" deep, and a doublecar runs 600 to 1,800. Adding a 12'' wide road a quartermile long costs 15,000 to 60,000 . When extending your existing driveway, material costs for sand, gravel, paver stones, and edging are 750 to 800 for building an addition of 5'' x 20''.