The data below shows the breakdown of Good, Fair, and Poor condition MP pavements since 1988. These values are determined by a combination of IRI, Traffic Volume, and Visual Inspections. Generally, pavement condition is closely tied to rideability. However, during recent years, the percentage of poor MP pavements has increased in spite of decreases in average roughness. This is likely due to an increase in surface distresses that do not impact rideability. Examples include centerline joint separation, raveling, and rutting.

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Year	Total Mileage	IRI	AGE (Years)	ADT	Good	Fair	Poor
1988	13,538	123	*	3250	51%	34%	15%
1989	13,808	120	*	3330	55%	33%	12%
1990	13,809	117	*	3410	59%	32%	9%
1991	13,809	115	*	3530	61%	30%	9%
1992	13,809	111	*	3620	65%	28%	8%
1993	13,809	110	*	3710	65%	26%	8%
1994	13,809	111	*	3770	63%	30%	8%
1995	13,809	112	*	3880	63%	28%	10%
1996	13,809	110	*	3970	64%	23%	12%
1997	13,809	108	*	4060	64%	23%	12%
1998	13,823	114	9.0	4160	58%	28%	14%
1999	14,019	111	8.9	4270	53%	32%	15%
2000	14,015	117	8.8	4360	52%	29%	19%
2001	14,036	114	8.5	4440	52%	29%	20%
2002	14,033	113	8.5	4400	52%	31%	17%
2003	14,030	111	8.6	4400	49%	33%	19%
2004	14,032	113	9.3	4557	48%	39%	14%
2005	14,052	111	8.8	4482	55%	33%	12%
2006	13,395	110	9.1	4747	53%	28%	18%
2007	13,246	112	8.9	4719	62%	18%	21%
2008	13,370	111	8.8	4773	62%	18%	19%
2009	13,242	109	9.3	4697	67%	6%	27%
2010	13,242	110	9.8	4687	66%	13%	21%
2011	13,456				64%	6%	30%