UNITED STATES DEPARTMENT OF AGRICULTURE 
BULLETIN No. 586 
l£? Contribution from Office of Public Roads and Rural Engineering, r^Vf 
^\$^&JU LOGAN WALLER PAGE, Director. J&$*&5L 
Washington, D. C. PROFESSIONAL PAPER February 28, 1918 
PROGRESS REPORTS OF EXPERIMENTS IN DUST 
PREVENTION AND ROAD PRESERVATION, 1916. 
CONTENTS. 
Page. 
New Experiments . 2 
Russell Road, Alexandria County, Va. (bituminous macadam and bituminous gravel) 2 
Alexandria-Accotink Road, Fairfax County, Va. (bituminous gravel, earth-oil asphait) 15 
Gum Spring- Mount Vernon Road, Fairfax County, Va. (bituminous surface treatment on new- 
gravel road) 20 
Texas Post Road, 1916— Corrugated Metal Culverts 27 
Supplementary Reports on Experiments Previously Reported 30 
Mount Vernon Avenue Road, Alexandria County, Va., 1915 (bituminous macadam, bituminous 
concrete) 31 
Falls Road, Montgomery County, Md., 1915 (bituminous surface treatment) 37 
Bradley Lane, Montgomery County, Md., 1915 (bituminous macadam) 40 
Washington, D. C, 1915 (bituminous concrete) 42 
Buena Vista, Fla., 1915 (oil asphalt-coralline rock) 42 
Jupiter, Palm Beach County, Fla., 1915 (oil asphalt-sand) . . : 42 
West Palm Beach, Fla., 1915 (bituminous sand, oil-limestone mixing methods) 43 
Ocala, Fla., 1915 (sand-asphalt) 44 
Lemon City, Fla., 1914 (oils, tar preparation, calcium chloride-coralline rock) 44 
West Palm Beach, Fla., 1914 (oil, tar, oil asphalt-coralline rock) 45 
Miami, Fla., 1913 (oil-coralline rock) 46 
Rockville Pike, Montgomery County, Md., 1913 (bituminous surface treatment) 49 
Washington, D. C, 1912 (tar preparation and oil surface treatment) 52 
Chevy Chase, Montgomery County, Md., 1912 (bituminous concrete, cement concrete, oil cement 
concrete, vitrified brick, bituminous surface treatment on concrete) 55 
Chevy Chase, Montgomery County, Md., 1911- (bituminous construction and surface treatment). 59 
Jamaica, N. Y., 1911 (oil cement concrete, oil asphalt, tar and fluxed native asphalt) 62 
Ames, Iowa, 1910 (oil asphalt gravel) 67 
Knoxville, Tenn., 1910 (tar and oil preparations) 69 
Youngstown, Ohio, 1910 (slag, lime, waste sulphite liquor, and tar) 71 
Dodge City, Garden City, Bucklin, and Ford, Kans., 1908 (sand-clay) 75 
Bowling Green, Ky., 1907 (Kentucky rock asphalt) 76 
During the year 1916 the Office of Public Roads and Rural Engi- 
neering undertook three new experimental highway projects and a 
separate investigation of corrugated metal pipe for use in constructing 
highway culverts. All of the highway projects involved the use of 
bitmoinous materials. The principal purpose of the new road 
experiments has been to develop the most advantageous methods 
of using gravel with bitmninous materials in constructing the better 
4588°— 18— Bull. 586 1 
