Table 4-52: Highway Noise Barrier Construction
Table 4-52: Highway Noise Barrier Construction(Miles)
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Unknown 1970-79 1980-89 1990 1991 1992 1993 1994 1995 1996 1997 1998 Total 1970-98 Type I barriersa d6 102 419 44 78 113 62 48 87 34 47 114 R1,147 Type II barriersb 0 70 128 19 18...