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Policy Information

Highway Statistics 2007

Federal - Aid Highway Length - 2007 1/ Miles by Traffic Lanes and Access Control National Summary

October 2008
Table HM-36

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TRAFFIC LANES AND ACCESS CONTROL NATIONAL HIGHWAY SYSTEM OTHER FEDERAL - AID HIGHWAYS 2/ ALL FEDERAL-AID HIGHWAYS 2/
INTERSTATE OTHER TOTAL
MILES PERCENT MILES PERCENT MILES PERCENT MILES PERCENT MILES PERCENT
Rural:
One-way streets - 0.0 11 0.0 11 0.0 490 0.1 501 0.1
2 lanes 934 3.1 53,891 65.7 54,825 48.8 554,431 97.9 609,256 89.8
3 lanes 65 0.2 1,630 2.0 1,695 1.5 1,179 0.2 2,874 0.4
4 or more lanes - undivided 3/ 8 0.0 3,468 4.2 3,476 3.1 4,205 0.7 7,681 1.1
Divided highways - 4 or more lanes: 3/
Degree of access control:
None 2 0.0 10,990 13.4 10,992 9.8 4,682 0.8 15,674 2.3
Partial 12 0.0 7,511 9.2 7,523 6.7 1,032 0.2 8,555 1.3
Full 29,292 96.6 4,517 5.5 33,809 30.1 171 0.0 33,980 5.0
Total Rural 30,313 100.0 82,018 100.0 112,331 100.0 566,190 100.0 678,521 100.0
Small urban area:
One-way streets - 0.0 119 1.6 119 1.2 632 1.2 751 1.2
2 lanes - 0.0 2,148 28.6 2,148 22.1 46,082 84.0 48,230 74.7
3 lanes - 0.0 134 1.8 134 1.4 555 1.0 689 1.1
4 or more lanes - undivided 3/ - 0.0 1,550 20.7 1,550 15.9 5,009 9.1 6,559 10.2
Divided highways - 4 or more lanes: 3/
Degree of access control:
None - 0.0 1,534 20.5 1,534 15.8 1,883 3.4 3,417 5.3
Partial - 0.0 1,160 15.5 1,160 11.9 604 1.1 1,764 2.7
Full 2,226 100.0 853 11.4 3,079 31.7 109 0.2 3,188 4.9
Total Small Urban Area 2,226 100.0 7,498 100.0 9,724 100.0 54,874 100.0 64,598 100.0
Urbanized Area:
One-way streets 8 0.1 481 1.8 489 1.2 5,796 2.9 6,285 2.6
2 lanes 12 0.1 3,889 14.6 3,901 9.6 138,844 69.7 142,745 59.5
3 lanes 7 0.0 165 0.6 172 0.4 1,806 0.9 1,978 0.8
4 or more lanes - undivided 3/ 5 0.0 4,645 17.4 4,650 11.4 28,467 14.3 33,117 13.8
Divided highways - 4 or more lanes: 3/
Degree of access control:
None 17 0.1 6,117 23.0 6,134 15.0 19,964 10.0 26,098 10.9
Partial 90 0.6 4,100 15.4 4,190 10.3 3,554 1.8 7,744 3.2
Full 14,034 99.0 7,231 27.2 21,265 52.1 813 0.4 22,078 9.2
Total Urbanized Area 14,173 100.0 26,628 100.0 40,801 100.0 199,244 100.0 240,045 100.0
Total Urban:
One-way streets 8 0.0 600 1.8 608 1.2 6,428 2.5 7,036 2.3
2 lanes 12 0.1 6,037 17.7 6,049 12.0 184,926 72.8 190,975 62.7
3 lanes 7 0.0 299 0.9 306 0.6 2,361 0.9 2,667 0.9
4 or more lanes - undivided 3/ 5 0.0 6,195 18.2 6,200 12.3 33,476 13.2 39,676 13.0
Divided highways - 4 or more lanes: 3/
Degree of access control:
None 17 0.1 7,651 22.4 7,668 15.2 21,847 8.6 29,515 9.7
Partial 90 0.5 5,260 15.4 5,350 10.6 4,158 1.6 9,508 3.1
Full 16,260 99.2 8,084 23.7 24,344 48.2 922 0.4 25,266 8.3
Total Urban 16,399 100.0 34,126 100.0 50,525 100.0 254,118 100.0 304,643 100.0
Total Rural and Urban 46,712   116,144   162,856   820,308   983,164  

1/ Includes the 50 States, the District of Columbia, and Puerto Rico. Indiana excludes up to 788 miles of Federal agency roads. Minnesota excludes 437 miles of local government owned roads.

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

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

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Updated: 01/03/2012

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