Iowa DOT

Volume of Traffic on the Primary Road System

Route	2005	Rural/Municipal	Section length (miles)	Annual average daily traffic	Vehicle classification distribution of annual average daily traffic											Average daily vehicle miles
	2005				Motorcylces	Cars, vans and pickups	Total trucks and buses	Single unit trucks				Combination trucks				All vehicles	Trucks and buses
	Primary route section description							Single unit trucks				Combination trucks
	Primary route section description							Buses	2Axles	3Axles	4 or more axles	4 or less axles	5Axles	6 or more axles	Multiple trailers
20	38 Grundy COUNTY
20	CO RD T19 INTERCHANGE	Rural	3.960	7600	53	5732	1815	25	147	63	8	445	1022	71	34	30096	7187
20	IA 14 INTERCHANGE	Rural	8.008	7400	52	5628	1720	21	121	52	7	430	988	68	34	59259	13774
20	WEST LIMITS OF DIKE	Rural	6.486	10600	79	8585	1936	26	153	65	8	476	1094	76	37	68752	12557
20	CO RD T55 INTERCHANGE	Municipal	0.529	10600	79	8585	1936	26	153	65	8	476	1094	76	37	5607	1024
20	EAST LIMITS OF DIKE	Municipal	0.514	11400	86	9341	1973	29	168	72	9	480	1102	76	37	5860	1014
20	WEST LIMITS OF DIKE	Rural	0.749	11400	86	9341	1973	29	168	72	9	480	1102	76	37	8539	1478
20	EAST LIMITS OF DIKE	Municipal	0.290	11400	86	9341	1973	29	168	72	9	480	1102	76	37	3306	572
20	CO RD T69 INTERCHANGE AT
20	WEST LINE OF BLACK HAWK COUNTY	Rural	3.495	11400	86	9341	1973	29	168	72	9	480	1102	76	37	39843	6896
	ROUTE SUMMARY - RURAL		22.698	9097												206489	41892
	ROUTE SUMMARY - MUNICIPAL		1.333	11083												14773	2610