USA Interstate Highway System:
Miles/Kilometers Opened by Year
|
|
Miles Opened During Year |
Cumulative Miles Opened |
% of 1995 Miles Opened |
Kilometers Opened During Year |
Cumulative Kilometers Opened |
|
Pre-1956 |
2,180.5 |
2,180.5 |
5.1% |
3,511.3 |
3,511.3 |
|
1956 |
538.8 |
2,719.3 |
6.4% |
867.6 |
4,378.9 |
|
1957 |
2,232.7 |
4,952.0 |
11.6% |
3,595.3 |
7,974.2 |
|
1958 |
1,794.9 |
6,746.9 |
15.8% |
2,890.3 |
10,864.6 |
|
1959 |
1,895.4 |
8,642.3 |
20.2% |
3,052.2 |
13,916.7 |
|
1960 |
1,797.6 |
10,439.9 |
24.4% |
2,894.7 |
16,811.4 |
|
1961 |
1,856.5 |
12,296.4 |
28.7% |
2,989.5 |
19,801.0 |
|
1962 |
2,039.4 |
14,335.8 |
33.5% |
3,284.1 |
23,085.0 |
|
1963 |
2,219.6 |
16,555.4 |
38.7% |
3,574.2 |
26,659.3 |
|
1964 |
2,463.4 |
19,018.8 |
44.4% |
3,966.8 |
30,626.1 |
|
1965 |
2,166.0 |
21,184.8 |
49.5% |
3,487.9 |
34,114.0 |
|
1966 |
2,290.8 |
23,475.6 |
54.9% |
3,688.9 |
37,802.9 |
|
1967 |
2,166.3 |
25,641.9 |
59.9% |
3,488.4 |
41,291.3 |
|
1968 |
1,962.3 |
27,604.2 |
64.5% |
3,159.9 |
44,451.2 |
|
1969 |
2,033.5 |
29,637.7 |
69.3% |
3,274.6 |
47,725.8 |
|
1970 |
1,905.7 |
31,543.4 |
73.7% |
3,068.8 |
50,794.5 |
|
1971 |
1,444.3 |
32,987.7 |
77.1% |
2,325.8 |
53,120.3 |
|
1972 |
1,405.6 |
34,393.3 |
80.4% |
2,263.4 |
55,383.7 |
|
1973 |
1,067.2 |
35,460.5 |
82.9% |
1,718.5 |
57,102.3 |
|
1974 |
812.1 |
36,272.6 |
84.8% |
1,307.7 |
58,410.0 |
|
1975 |
1,119.5 |
37,392.1 |
87.4% |
1,802.7 |
60,212.7 |
|
1976 |
790.3 |
38,182.4 |
89.2% |
1,272.6 |
61,485.3 |
|
1977 |
724.5 |
38,906.9 |
90.9% |
1,166.7 |
62,652.0 |
|
1978 |
505.4 |
39,412.2 |
92.1% |
813.8 |
63,465.7 |
|
1979 |
365.2 |
39,777.4 |
92.9% |
588.1 |
64,053.8 |
|
1980 |
475.2 |
40,252.6 |
94.1% |
765.2 |
64,819.0 |
|
1981 |
381.6 |
40,634.2 |
95.0% |
614.5 |
65,433.5 |
|
1982 |
235.4 |
40,869.6 |
95.5% |
379.1 |
65,812.6 |
|
1983 |
114.2 |
40,983.8 |
95.8% |
183.9 |
65,996.5 |
|
1984 |
345.6 |
41,329.3 |
96.6% |
556.5 |
66,552.8 |
|
1985 |
159.1 |
41,488.4 |
96.9% |
256.2 |
66,809.0 |
|
1986 |
173.0 |
41,661.3 |
97.4% |
278.6 |
67,087.4 |
|
1987 |
197.6 |
41,858.9 |
97.8% |
318.2 |
67,405.6 |
|
1988 |
145.2 |
42,004.1 |
98.2% |
233.8 |
67,639.5 |
|
1989 |
432.2 |
42,436.3 |
99.2% |
696.0 |
68,335.4 |
|
1990 |
95.6 |
42,531.9 |
99.4% |
153.9 |
68,489.4 |
|
1991 |
64.5 |
42,596.4 |
99.5% |
103.9 |
68,593.2 |
|
1992 |
95.3 |
42,691.7 |
99.8% |
153.5 |
68,746.7 |
|
1993 |
49.7 |
42,741.4 |
99.9% |
80.0 |
68,826.7 |
|
1994 |
7.6 |
42,749.0 |
99.9% |
12.2 |
68,839.0 |
|
1995 |
15.1 |
42,764.1 |
99.9% |
24.3 |
68,863.3 |
|
Congressionally Designated System |
42,794.5 |
|
|
68,912.2 |
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Source: Federal Highway Administration |
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To facilitate the ideal of government as the servant of the people
by identifying and implementing
strategies to achieve public purposes
at a cost that is no higher than necessary.
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(c) 1994-2005 www.publicpurpose.com --- Wendell Cox Consultancy --- Permission granted to use with attribution.
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