Office of Highway Policy Information - Policy | Federal Highway Administration

October 2008
Table HM-18M

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FUNCTIONAL SYSTEM	FEDERAL-AID HIGHWAYS					NON- FEDERAL-AID HIGHWAYS	TOTAL
	NATIONAL HIGHWAY SYSTEM			OTHER	TOTAL
	INTERSTATE	OTHER	TOTAL	OTHER	TOTAL
Rural:
Principal Arterial:
Interstate	48,911	-	48,911	-	48,911	-	48,911
Other	-	127,634	127,634	24,963	152,596	-	152,596
Subtotal	48,911	127,634	176,545	24,963	201,508	-	201,508
Minor Arterial	-	3,644	3,644	214,463	218,106	-	218,106
Major Collector	-	1,193	1,193	674,219	675,411	-	675,411
Minor Collector	-	27	27	-	27	423,465	423,492
Subtotal	-	4,863	4,863	888,681	893,545	423,465	1,317,010
Local	-	56	56	-	56	3,294,755	3,294,812
Total - Rural	48,911	132,554	181,465	913,644	1,095,109	3,718,220	4,813,329
Small Urban:
Principal Arterial:
Interstate	3,632	-	3,632	-	3,632	-	3,632
Other Freeways and Expressways	-	1,812	1,812	243	2,055	-	2,055
Other	-	9,915	9,915	12,752	22,668	-	22,668
Subtotal	3,632	11,727	15,360	12,995	28,355	-	28,355
Minor Arterial	-	409	409	34,425	34,834	-	34,834
Collector	-	89	89	40,984	41,072	-	41,072
Local	-	16	16	-	16	221,726	221,742
Total - Small Urban	3,632	12,241	15,873	88,404	104,277	221,726	326,003
Urbanized:
Principal Arterial:
Interstate	22,989	-	22,989	-	22,989	-	22,989
Other Freeways and Expressways	-	13,591	13,591	2,021	15,612	-	15,612
Other	-	27,187	27,187	52,619	79,806	-	79,806
Subtotal	22,989	40,778	63,767	54,640	118,407	-	118,407
Minor Arterial	-	1,743	1,743	132,475	134,218	-	134,218
Collector	-	505	505	136,720	137,226	-	137,226
Local	-	172	172	-	172	986,113	986,285
Total - Urbanized	22,989	43,198	66,187	323,835	390,023	986,113	1,376,136
Total Urban:
Principal Arterial:
Interstate	26,622	-	26,622	-	26,622	-	26,622
Other Freeways And Expressways	-	15,403	15,403	2,264	17,667	-	17,667
Other	-	37,102	37,102	65,372	102,473	-	102,473
Subtotal	26,622	52,505	79,127	67,636	146,763	-	146,763
Minor Arterial	-	2,152	2,152	166,900	169,052	-	169,052
Collector	-	594	594	177,704	178,298	-	178,298
Local	-	188	188	-	188	1,207,838	1,208,027
Total - Urban	26,622	55,439	82,060	412,240	494,300	1,207,838	1,702,139
Total - Rural and Urban	75,533	187,992	263,525	1,325,884	1,589,409	4,926,059	6,515,468

1/ Includes the 50 States, the District of Columbia and Puerto Rico. Due to conversion from English to metric units and to rounding, individual cell values may not agree with corresponding mileage table cell values. Indiana excludes 1,268 kilometers of Federal agency owned roads. Minnesota excludes 703 kilometers of local government roads.