Table HM-12M - Highway Statistics 2020 - Policy | Federal Highway Administration

Highway Statistics 2020

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PUBLIC ROAD LENGTH - 2020 (1)
KILOMETERS BY TYPE OF SURFACE AND OWNERSHIP/
FUNCTIONAL SYSTEM NATIONAL SUMMARY

October, 2021

**Table HM-12M**
OWNERSHIP/ FUNCTIONAL SYSTEM		UNPAVED	PAVED (2)				TOTAL
OWNERSHIP/ FUNCTIONAL SYSTEM		UNPAVED	BITUMINOUS	CONCRETE	COMPOSITE	TOTAL	TOTAL
Rural:
State Highway Agency: (3)	Interstate	32	25,866	9,660	9,395	44,920	44,953
	Other Freeways & Expressways	0	5,163	2,774	2,243	10,180	10,180
	Other Principal Arterial	547	114,041	7,501	22,229	143,772	144,319
	Minor Arterial	156	161,287	2,826	27,389	191,502	191,658
	Major Collector	2,536	317,830	1,405	14,124	333,358	335,894
	Subtotal	3,271	624,187	24,166	75,381	723,733	727,004
Other Jurisdictions:	Interstate	0	982	237	460	1,679	1,679
	Other Freeways & Expressways	0	113	149	-	262	262
	Other Principal Arterial	22	998	396	17	1,411	1,434
	Minor Arterial	561	12,882	16	542	13,440	14,001
	Major Collector	55,557	200,942	9,969	11,061	221,971	277,528
	Subtotal	56,140	215,916	10,767	12,080	238,763	294,904
Federal Agency:	Interstate	0	0	0	0	-	-
	Other Freeways & Expressways	0	-	-	-	-	-
	Other Principal Arterial	0	57	0	-	57	57
	Minor Arterial	0	1,704	0	-	1,704	1,704
	Major Collector	686	2,593	13	58	2,664	3,350
	Subtotal	686	4,355	13	58	4,426	5,111
Subtotal		60,097	844,458	34,945	87,519	966,922	1,027,019
Minor Collector		128,604				289,389	417,993
Local		1,877,340				1,356,586	3,233,926
Total Rural		2,066,041				2,612,898	4,678,939
Urban:
State Highway Agency: (3)	Interstate	0	12,390	8,134	7,816	28,340	28,340
	Other Freeways & Expressways	0	8,329	4,908	3,804	17,041	17,041
	Other Principal Arterial	2	51,420	7,402	20,098	78,920	78,922
	Minor Arterial	27	45,227	1,910	12,912	60,049	60,076
	Major Collector	8	35,262	3,165	4,065	42,491	42,499
	Minor Collector	31	3,827	55	416	4,298	4,328
	Subtotal	67	156,453	25,574	49,111	231,139	231,206
Other Jurisdictions:	Interstate	0	1,028	257	483	1,769	1,769
	Other Freeways & Expressways	0	816	797	49	1,662	1,662
	Other Principal Arterial	5	21,612	3,198	2,397	27,207	27,212
	Minor Arterial	376	81,658	10,074	9,529	101,262	101,638
	Major Collector	1,647	124,257	9,110	9,435	142,802	144,448
	Minor Collector	873	23,758	799	1,170	25,727	26,600
	Subtotal	2,901	253,130	24,235	23,063	300,428	303,328
Federal Agency:	Interstate	0	0	0	0	-	-
	Other Freeways & Expressways	0	62	0	3	65	65
	Other Principal Arterial	0	13	-	8	21	21
	Minor Arterial	0	232	1	2	235	235
	Major Collector	4	299	9	3	311	315
	Minor Collector	32	87	0	-	87	119
	Subtotal	37	693	10	16	719	755
Subtotal		3,004	410,276	49,819	72,190	532,285	535,289
Local		64,789				1,366,747	1,431,535
Total Urban		67,793				1,899,032	1,966,825
Total Rural and Urban		2,133,834	1,254,734	84,764	159,709	4,511,930	6,645,764

(1) Includes the 50 States, Puerto Rico, and the District of Columbia. Some differences from other tables may be noted because these are estimated from sample and summary data; some States may have missing/incomplete data. Due to conversion from English to metric units and to rounding, individual cell values may not agree with corresponding mileage table cell values.

(2) Paved includes the following categories: Bituminous -- bituminous, asphalt-concrete (AC) overlay over existing AC pavement; Concrete -- JPCP jointed plain concrete pavement, JRCP jointed reinforced concrete pavement, CRCP continuously reinforced concrete pavement; unbonded jointed concrete overlay on PCC pavement, bonded PCC overlay on PCC pavement, other (includes "whitetopping"); Composite -- AC overlay over jointed concrete pavement, AC (bituminous overlay over existing CRCP).

(3) Prior to 1999 included other state agency roads.

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Page last modified on December 14, 2021

Highway Statistics 2020

PUBLIC ROAD LENGTH - 2020 (1) KILOMETERS BY TYPE OF SURFACE AND OWNERSHIP/ FUNCTIONAL SYSTEM NATIONAL SUMMARY

PUBLIC ROAD LENGTH - 2020 (1)
KILOMETERS BY TYPE OF SURFACE AND OWNERSHIP/
FUNCTIONAL SYSTEM NATIONAL SUMMARY