Page:Highways for the National Defense.pdf/41

Table 5.—Distribution of the length of rural roads conforming to main lines of the strategic network, by traffic volume and pavement width groups—Continued

RURAL ROADS INCLUDED IN INTERREGIONAL SYSTEM
Average daily traffic volume (vehicles per day)	Width of pavements
	Less than 18 feet		18 feet to less than 22 feet		20 feet to less than 22 feet		22 feet to less than 24 feet		24 feet and over		All widths
	Miles	Percent	Miles	Percent	Miles	Percent	Miles	Percent	Miles	Percent	Miles	Percent
ALL RURAL ROADS
0 to 600	2,004	3.0	5,357	8.0	7,915	11.8	1,171	1.7	2,166	3.2	18,613	27.8
600 to 1,800	2,049	3.1	12,673	19.0	11,671	17.2	1,288	1.9	1,592	2.4	29,273	43.8
1,800 and over	1,037	1.5	6,559	9.8	5,763	8.6	1,107	1.7	4,527	6.8	18,983	28.4
Total	5,090	7.6	24,589	36.8	25,339	37.9	3,566	5.3	8,285	12.4	66,869	100.00

Table 6.—Accumulative distribution of the length of rural roads conforming to main lines of the strategic network, by traffic volume and pavement width groups

RURAL ROADS INCLUDED IN INTERREGIONAL SYSTEM
Average daily traffic volume (vehicles per day)	Width of pavements
	Less than 18 feet		Less than 20 feet		Less than 22 feet		Less than 24 feet		24 feet and over
	Miles	Percent	Miles	Percent	Miles	Percent	Miles	Percent	Miles	Percent
0 to 600	52	0.2	1,159	4.5	3,346	13.1	3,501	13.7	3,825	15.0
600 to 1,800	521	2.1	5,954	23.4	10,513	41.2	10,944	42.9	11,750	46.0
1,800 and over	361	1.4	4,092	16.0	6,788	26.5	7,215	28.2	9,979	30.0
Total	934	3.7	11,205	43.9	20,637	80.8	21,660	84.8	25,554	100.00
RURAL ROADS NOT INCLUDED IN INTERREGIONAL SYSTEM
0 to 600	1,952	4.7	6,202	15.0	11,930	28.9	12,946	31.4	14,788	35.8
600 to 1,800	1,528	3.7	8,768	21.2	15,880	38.4	16,737	40.5	17,523	42.4
1,800 and over	676	1.6	3,504	8.5	6,571	15.9	7,241	17.5	9,004	21.8
Total	4,156	10.0	18,474	44,7	34,381	83.2	36,924	89.4	41,315	100.00
ALL RURAL ROADS
0 to 600	2,004	3.0	7,361	11.0	15,276	22.8	16,447	24.6	18,613	27.8
600 to 1,800	2,049	3.1	14,722	21.0	26,393	39.5	27,681	41.4	29,273	43.8
1,800 and over	1,037	1.5	7,596	11.4	13,349	20.0	14,450	21.6	18,983	28.4
Total	5,090	7.6	29,679	44.4	55,018	82.3	58,584	87.6	66,869	100.00

Table 5 shows how the entire mileage breaks down into each of four pavement-width classes, each subdivided into traffic-volume groups. Table 6 shows an accumulative distribution which gives for each traffic-volume class the total mileage at present improved with pavements or surfaces less than 18, 20 , 22, and 24 feet wide, and 24 feet wide and over. In both tables roads included in the proposed interregional system and those not included in that system are separately classified.

Both tables 5 and 6 show that the roads of the strategic network most seriously deficient in pavement width are the 5,090 miles paved less than 18 feet wide. Only 934 miles of such extremely narrow surfaces are part of the interregional system; 4,156 miles are on other roads conforming to the strategic main lines.

Table 5 shows that pavements 24 feet wide and wider are found on 8,285 miles of the network—on 3,894 miles of the interregional system and on 4,391 miles of other roads. Practically all roads in this group are fully adequate in pavement width for their present normal traffic.