Table 10 - Noise Barrier Construction Material Average Unit Cost by Year

Material Average Unit Cost
(2007 $/square Foot)
Year	Concrete	Block	Wood	Metal	Berm	Brick	Combination	Absorptive
1963-1996	26	23	19	19	6	27	20	30
1997	27	12	42	0	2	0	28	0
1998	24	16	21	13	5	0	17	33
1999	30	21	24	47	3	0	28	20
2000	25	39	21	0	8	0	14	36
2001	26	25	19	18	0	31	11	19
2002	35	32	17	14	4	43	19	26
2003	28	29	21	20	4	0	5	22
2004	23	26	14	15	0	0	12	23
2005	30	18	15	0	13	42	16	0
2006	29	21	18	15	10	67	24	0
2007	34	21	0	15	21	0	27	0

ALL	27	22	19	17	6	31	19	27

NOTE:
Square feet of noise barriers constructed with 'Other' materials - 1,873,154
Costing approximately - $33 per square foot.