Table 4-52: Highway Noise Barrier Construction

Table 4-52: Highway Noise Barrier Construction

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(Miles)

  Unknowna (R) 1963-1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 (R) 2001 2002 (R) 2003 (R) 2004 2005 2006 2007 Total 1963-2007
TOTAL length 6 491 54 106 103 64 99 143 88 (R) 90 133 54 102 140 54 82 133 78 92 107 86 113 96 2,506
Type I barriersb 6 320 35 83 88 44 78 114 63 (R) 48 95 37 70 116 31 67 96 63 81 89 55 77 52 1,803
Type II barriersc 0 167 16 8 8 19 18 18 21 16 32 15 31 23 18 11 18 13 4 14 10 13 17 511
All other typesd N 4 3 15 7 1 3 11 4 26 6 2 1 1 5 4 19 2 7 4 21 23 27 184
Cost (2007 $ millions) (R) 0 612 (R) 78 (R) 184 (R) 179 (R) 118 (R) 193 (R) 249 (R) 158 (R) 152 (R) 222 (R) 87 (R) 197 (R) 265 (R) 121 (R) 161 234 (R) 210 204 177 196 237 241 4,474

KEY: N = data do not exist; R = revised.

a Have not been assigned a year of construction or a cost.

b A Type I barrier is built on a new highway project or a physically altered existing highway.

c A Type II barrier is built to abate noise along an existing highway (often referred to as retrofit abatement) and is not mandatory.

d All other types of barriers are nonfederally funded.

NOTES

Fifty miles of barriers, while assigned a year of construction, cannot be assigned a cost.

California did not provide data for the years 1999 - 2004 and therefore these years may not be comparable with previous years.

SOURCE

U.S. Department of Transportation, Federal Highway Administration, Office of Environment and Planning, Highway Traffic Noise Barrier Construction Trends (Washington, DC: August 2009), tables 5 and 7, and similar tables in earlier editions available at http://www.fhwa.dot.gov/environMent/noise/barrier/summary.htm as of Apr. 7, 2010.