Office of Highway Policy Information - Policy | Federal Highway Administration

October 2009
Table HM-36M

TRAFFIC LANES AND ACCESS CONTROL	NATIONAL HIGHWAY SYSTEM						OTHER FEDERAL - AID HIGHWAYS 2/		ALL FEDERAL-AID HIGHWAYS2/
	INTERSTATE		OTHER		TOTAL		OTHER FEDERAL - AID HIGHWAYS 2/		ALL FEDERAL-AID HIGHWAYS2/
	KILOMETERS	PERCENT	KILOMETERS	PERCENT	KILOMETERS	PERCENT	KILOMETERS	PERCENT	KILOMETERS	PERCENT
Rural:
One-way streets	-	0.0	16	0.0	16	0.0	557	0.1	573	0.1
2 lanes	1,518	3.1	86,282	65.6	87,799	48.7	890,891	98.0	978,690	89.8
3 lanes	105	0.2	2,840	2.2	2,945	1.6	2,013	0.2	4,958	0.5
4 or more lanes - undivided 3/	13	0.0	5,504	4.2	5,517	3.1	6,714	0.7	12,231	1.1
Divided highways - 4 or more lanes: 3/
Degree of access control:
None	2	0.0	18,269	13.9	18,271	10.1	7,324	0.8	25,595	2.3
Partial	19	0.0	12,057	9.2	12,077	6.7	1,798	0.2	13,874	1.3
Full	46,838	96.6	6,648	5.1	53,487	29.7	203	0.0	53,689	4.9
Total Rural	48,494	100.0	131,617	100.0	180,111	100.0	909,500	100.0	1,089,611	100.0
Small urban area:
One-way streets	-	0.0	200	1.6	200	1.3	1,009	1.1	1,209	1.1
2 lanes	-	0.0	3,508	28.7	3,508	22.0	75,586	84.2	79,094	74.8
3 lanes	-	0.0	195	1.6	195	1.2	824	0.9	1,019	1.0
4 or more lanes - undivided 3/	-	0.0	2,567	21.0	2,567	16.1	8,179	9.1	10,746	10.2
Divided highways - 4 or more lanes: 3/
Degree of access control:
None	-	0.0	2,419	19.8	2,419	15.2	3,066	3.4	5,485	5.2
Partial	-	0.0	1,960	16.0	1,960	12.3	943	1.1	2,903	2.7
Full	3,719	100.0	1,366	11.2	5,086	31.9	137	0.2	5,222	4.9
Total Small Urban Area	3,719	100.0	12,215	100.0	15,934	100.0	89,743	100.0	105,678	100.0
Urbanized Area:
One-way streets	10	0.0	822	1.9	832	1.2	10,863	3.3	11,695	2.9
2 lanes	18	0.1	6,231	14.3	6,249	9.4	229,690	69.3	235,939	59.2
3 lanes	11	0.0	251	0.6	262	0.4	3,063	0.9	3,325	0.8
4 or more lanes - undivided 3/	8	0.0	7,623	17.5	7,632	11.4	48,467	14.6	56,099	14.1
Divided highways - 4 or more lanes: 3/
Degree of access control:
None	26	0.1	9,930	22.7	9,955	14.9	32,573	9.8	42,529	10.7
Partial	145	0.6	6,911	15.8	7,055	10.6	5,667	1.7	12,722	3.2
Full	22,862	99.1	11,883	27.2	34,746	52.1	1,263	0.4	36,009	9.0
Total Urbanized Area	23,080	100.0	43,652	100.0	66,731	100.0	331,586	100.0	398,317	100.0
Total Urban:
One-way streets	10	0.0	1,022	1.8	1,032	1.2	11,872	2.8	12,904	2.6
2 lanes	18	0.1	9,740	17.4	9,757	11.8	305,276	72.5	315,034	62.5
3 lanes	11	0.0	446	0.8	457	0.6	3,887	0.9	4,344	0.9
4 or more lanes - undivided 3/	8	0.0	10,190	18.2	10,198	12.3	56,646	13.4	66,844	13.3
Divided highways - 4 or more lanes: 3/
Degree of access control:
None	26	0.1	12,348	22.1	12,374	15.0	35,639	8.5	48,013	9.5
Partial	145	0.5	8,871	15.9	9,016	10.9	6,610	1.6	15,625	3.1
Full	26,582	99.2	13,250	23.7	39,831	48.2	1,400	0.3	41,231	8.2
Total Urban	26,799	100.0	55,867	100.0	82,666	100.0	421,329	100.0	503,995	100.0
Total Rural and Urban	75,293		187,484		262,777		1,330,829		1,593,606

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 up to 1,268 kilometers of Federal agency roads.

2/ Some differences from other tables may be noted because these are estimated from sample data and to not include samples entirely on structures.

3/ Differences may exist from prior years due to the redefinition of divided and undivided roadways in 1999.