Table 4-56: Highway Noise Barrier Construction
Table 4-56: Highway Noise Barrier Construction
(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.