PUBLIC ROAD MILEAGE AND REVENUES, 1914. 5 
TYPES OF SURFACED ROADS. 
Table 7 shows the distribution of types of surfaced roads in the 
various States on January 1, 1915. Of the 257,291.54 miles of sur- 
faced roads in the United States on January 1, 1915, 116,058.12 
miles, or 45.11 per cent, were gravel; 64,898.43 miles, or 25.22 per 
cent, were macadam; 44,154.73 miles, or 17.16 per cent, were sand 
clay; 10,499.79 miles, or 4.08 per cent, were bituminous macadam; 
2,348.43 miles, or 0.91 per cent, were concrete; 1,593.88 miles, or 
0.62 per cent, were brick, and 17,738.16 miles, or 6.90 per cent, were 
surfaced with various materials. 
Table 1. — Road mileage, revenue, and other related data for the United States, 1914, 
1909, 1904. 1 
1909 
1904 
Total road mileage 
Surfaced mileage 
Percentage surfaced 
Total revenue 
State and local road and bridge bonds outstanding 
Jan. 1,1915 
Land area (square miles) 
Populat ion 
Rural population 
Assessed valuation 
Miles of road per square mile of area 
Miles of road per 1,000 of rural population 
Surfaced mileage per square mile of area 
Surfaced mileage per 1,000 of rural population 
Road and bridge revenue per mile of road 
Road and bridge revenue per square mile of area 
Road and bridge revenue per capita 
Road and bridge revenue per $100 assessed value 
2, 445, 761 
257, 291. 54 
10.5 
$240, 263, 784. 46 
$344, 763, 082. 32 
3 2,973,830 
3 91,641,197 
3 49,348,883 
$69, 093. 003, 851 
0.82 
49.5 
0. 086 
5.21 
$98. 22 
$80.79 
$2.62 
$0.35 
2, 199, 645 
190,476.32 
8.66 
( 2 ) 
( 2 ) 
3 2,973,830 
3 91,641,197 
3 49,348,883 
,093,003,851 
0.74 
44.6 
0.064 
2,151,379 
153, 530. 4 
7.14 
$79, 623, 616. 56 
( 2 ) ~ 
4 2,974,099 
4 75, 715, 857 
* 45, 197, 390 
6 $35,114,924,911 
0.72 
47.6 
0.052 
3.39 
$37.01 
$26. 77 
$1.05 
$0.23 
i Exclusive of District of Columbia, Alaska, and island possessions. 
3 1910. 1 1900. 5 1912. 
2 No information obtained. 
6 1902. 
Miles of road surfaced between 1909 and 1914, 66,815. 22. 
