RURAL HIGHWAY MILEAGE, INCOME, AND EXPENDITURES 45 
Table 11. — Rural road mileage by types and highway systems as existing January 1, 
1922, and mileage of each type built during 1921 in each State — Continued 
PENNSYLVANIA 
State and State-aid 
roads 
County roads Township roads 
All rural roads 
Type 
Total 
Jan. 1, 
19221 
Built 
19212 
Total 
Jan. 1, 
1922 
Built 
1921 
Total 
Jan. 1, 
1922 
Built 
1921 
Total 
Jan. 1, 
1922 
Built 
1921 
Miles 
Miles 
Miles 
Miles 
Miles 
71, 925. 7 
82.0 
Miles 
Miles 
71, 925. 7 
4, 144. 3 
1, 000. 
0.5 
394.4 
696.2 
2, 718. 9 
203.5 
136.8 
483.1 
1, 149. 3 
325.6 
1.3 
7, 801. 4 
Miles 
Partly graded and 
4, 062. 3 
1,000.0 
82.0 
82.0 
Earth to definite 
grade with perma- 
nent drainage struc- 
._ 
0.5 
72.6 
673.2 
0.5 
72.6 
101.2 
0.5 
Gravel 
321.8 
72.6 
Waterbound mac- 
23.0 
65.7 
13.0 
101.2 
Surface-treated mac- 
2, 653. 2 
186.3 
135.6 
173.3 
1, 051. 
148.6 
1.3 
3 5.1 
1.3 
13.4 
52.0 
19.3 
572.4 
20.6 
1.3 
Bituminous macadam 
5.3 
4.2 I 4. 2 
1. 2 1 1. 2 
L 
22.9 
53.2 
319.8 
94.7 
172.8 
46.0 
26.6 
65.3 
Portland cement con- 
3.6 ! 3.6 
602.6 
Brick.. 
0. 4 J 4. 2 1 3. 8 
24.8 
* 7, 796. 3 
Total .. 
9, 738. 5 
679.0 
689.0 
78. 3 80. 563. 5 ! 269. 1 
90, 991. 
1, 026. 4 
1 Includes 419.8 miles of State-aid roads. 
2 Includes 95.2 miles of State-aid and 96.4 miles of county-aid roads. 
3 Bridges. 
* Township roads on which some improvements of more or less indeterminate character have been made, 
mostly grading and graveling. 
RHODE ISLAND 
State roads 
Town roads 
All rural roads 
Type 
Total 
Jan. 1, 
1922' 
Built 
1921 
Total 
Jan. 1, 
1922 
Built 
1921 
Total 
Jan. 1, 
1922 
Built 
1921 
Unimproved earth 
Miles 
Miles 
Miles 
26.6 
1, 359. 5 
134.4 
Miles 
Miles 
26.6 
1, 359. 5 
134.4 
144.6 
73.9 
257.5 
139.7 
1.6 
127.2 
6.3 
2.2 
Miles 
Partly graded and drained earth 
Earth to definite grade with permanent 
drainage structures 
Gravel 
2.4 
2.4 
142.2 
32.0 
34.4 
73.9 
102.2 
77.8 
Surface-treated macadam.. 
155.3 
61.9 
1.6 
121.6 
5.5 
1.6 
7.5 
1.6 
Bituminous macadam 
18.8 
26.3 
Sheet asphalt 
Bituminous concrete 
25.3 
2.3 
5.6 
.8 
2.2 
1.5 
26.8 
Portland cement concrete 
2.3 
Stone block 
.i 
.1 
Total 
348.3 
39.1 
1, 925. 2 
52.4 
2, 273. 5 
91.5 
Includes only mileage actually constructed and taken over by State. 
