Iowa DOT

Volume of Traffic on the Primary Road System

Route	2006	Rural/Municipal	Section length (miles)	Annual average daily traffic	Vehicle classification distribution of annual average daily traffic											Average daily vehicle miles
	2006				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	8000	62	6029	1908	31	148	59	7	478	1071	78	35	31680	7556
20	IA 14 INTERCHANGE	Rural	8.009	7700	60	5847	1793	26	125	50	6	456	1022	75	33	61669	14360
20	WEST LIMITS OF DIKE	Rural	6.489	10900	91	8844	1963	31	148	59	7	494	1107	81	37	70730	12738
20	CO RD T55 INTERCHANGE	Municipal	0.529	10900	91	8844	1963	31	148	59	7	494	1107	81	37	5766	1038
20	EAST LIMITS OF DIKE	Municipal	0.513	11700	99	9603	1998	34	162	65	8	497	1114	81	37	6002	1025
20	WEST LIMITS OF DIKE	Rural	0.749	11700	99	9603	1998	34	162	65	8	497	1114	81	37	8763	1497
20	EAST LIMITS OF DIKE	Municipal	0.290	11700	99	9603	1998	34	162	65	8	497	1114	81	37	3393	579
20	CO RD T69 INTERCHANGE AT
20	WEST LINE OF BLACK HAWK COUNTY	Rural	3.496	11700	99	9603	1998	34	162	65	8	497	1114	81	37	40903	6985
	ROUTE SUMMARY - RURAL		22.703	9415												213745	43136
	ROUTE SUMMARY - MUNICIPAL		1.332	11382												15161	2642