62 BULLETIN 463, U. S. DEPARTMENT OF AGRICULTURE. 



quired the rate was, of course, correspondingly diminished. In this 

 county teams with drivers cost from $3.50 to $5 per working day of 

 from 8 to 10 hours, and the cost per mile for dragging a road in one 

 trip showed a corresponding variation. The number of draggings 

 necessary per year varied over a wide range and depended on the 

 length of time the road had been constructed and the character of the 

 material composing the surface. 



The average cost per mile of dragging an earth road 8 miles long 

 in Alexandria County, Va., during 1911 and 1912 was $1.25 for 

 each dragging, which included an average of three round trips, and 

 the total number of draggings necessary to maintain the road in 

 good condition was 24 per year, making the average cost for drag- 

 ging $30 per mile per year. This road was maintained as an experi- 

 ment by the Office of Public Roads and Rural Engineering. 



