2 BULLETIN 389, U. S. DEPAKTMENT OF AGRICULTURE. 
the aid of local and State road associations, chambers of commerce, automobile clubs, 
postmasters, and private individuals in order to obtain adequate information. On 
account of the absence of detailed records in many of the towns and counties extreme 
accuracy is impossible. The data on mileage and revenues should therefore be con- 
sidered as approximate only. Because of the large amount of correspondence neces- 
sary to conduct the investigation, considerable delay in the issuance of the data has 
been unavoidable. 
Bulletins already have been issued for the Middle Atlantic States, the New England 
States, and the Southern States, respectively. These, together with this bulletin, 
which contains data for the Central, Mountain, and Pacific States, form a complete 
series embracing all of the 48 States. A convenient reference summary of all of the 
States also is issued coincident with this bulletin. 
ROAD ADMINISTRATION IN THE CENTRAL, MOUNTAIN, AND PACIFIC STATES. 
The greater part of all road and bridge work in the States comprised in this group 
is done under the supervision of county, township, or district authorities. There is, 
however, an increasing tendency toward State participation and management. Laws 
have been enacted creating or designating State highway departments or commissions 
in the States of California, Colorado, Idaho, Illinois, Iowa, Michigan, Minnesota, 
Missouri, Montana, New Mexico, North Dakota, Ohio, Oregon, South Dakota, Utah, 
Washington, and Wisconsin. Duties somewhat similar to those exercised by State 
highway departments or commissions are imposed upon the State engineer in the 
States of Kansas, Nebraska, Nevada, and Wyoming; and all the functions of a State 
highway department or commission are exercised by the State engineer and the State 
board of control in the State of Arizona. An outline of the system of road adminis- 
tration in force in each State is given under the respective State headings. 
PUBLIC ROAD REVENUES. 
The total revenue applied to roads and bridges in the Central, Mountain, and Pacific 
States in the year 1914 amounted to $131,446,647.62, including State appropriations, 
motor-vehicle registration and license fees, amounts derived from local taxation, and 
expenditures from bond issues, both State and local. In 1904 the total revenue 
applied to this purpose amounted to $36,794,586.67. The increase in 1914 as com- 
pared with 1904 was, therefore, $94,652,060.95, or 257.24 per cent. Table 1 presents in 
condensed form the information assembled concerning revenues for this group of 
States for the year 1914, with comparative information for the year 1904. 
Table 1. — Revenue applied to roads and bridges. 
Total revenue applied to roads 
and bridges. 
Increase in revenue over 
1904. 
State. 
1904 
1914 
Total increase. 
Percent- 
age of 
increase. 
$109, 309. 43 
2, 157, 396. 36 
707, 223. 63 
311, 588. 00 
4, 210, 950. 32 
4, 335, 108. 00 
3, 106, 607. 50 
1,232,817.45 
3, 179, 787. 88 
1,961,629.24 
2, 368, 972. 79 
404, 097. 81 
878, 547. 40 
S982, 721. 22 
19,171,984.66 
1,937,546.23 
1, 371, 468. 59 
8, 734, 712. 77 
14, 233, 985. 93 
10, 187, 507. 32 
5, 544, 048. 00 
9, 261, 998. 00 
6,458,940.07 
5, 513, 048. 71 
2, 888, 400. 61 
1, 796, 277. 69 
$873, 411. 79 
17,014,588.30 
1, 230, 322. 60 
1,059,880. % 
4,523,762. 'J 
9, 898, 877. 93 
7, 080, 899. 82 
4, 311, 230. 55 
6, 082, 210. 12 
4, 497, 310. 83 
3, 144, 075. 92 
2, 484, 302. 80 
917, 730. 29 
799 
786.6 
Colorado 
173. 96 
340 
107. 42 
Indiana 
228. 34 
227. 92 
349.7 
191. 27 
229.26 
132. 72 
Montana 
614. 77 
Nebraska 
104.4 
