Iowa DOT

Volume of Traffic on the Primary Road System

Route	2008	Rural/Municipal	Section length (miles)	Annual average daily traffic	Vehicle classification distribution of annual average daily traffic											Average daily vehicle miles
	2008				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	7900	69	5948	1882	34	145	56	8	447	1069	88	36	31284	7453
20	IA 14 INTERCHANGE	Rural	8.009	7600	66	5765	1767	29	122	47	6	426	1020	83	34	60868	14152
20	WEST LIMITS OF DIKE	Rural	6.486	10700	100	8664	1936	34	145	56	8	462	1105	90	37	69400	12557
20	CO RD T55 INTERCHANGE	Municipal	0.529	10400	97	8425	1877	33	140	54	7	448	1072	88	36	5502	993
20	EAST LIMITS OF DIKE	Municipal	0.513	11200	106	9183	1910	36	153	59	8	451	1079	88	36	5746	980
20	WEST LIMITS OF DIKE	Rural	0.749	11500	109	9421	1970	37	159	61	8	465	1112	91	37	8614	1476
20	EAST LIMITS OF DIKE	Municipal	0.290	11200	106	9183	1910	36	153	59	8	451	1079	88	36	3248	554
20	CO RD T69 INTERCHANGE AT
20	WEST LINE OF BLACK HAWK COUNTY	Rural	3.496	11500	109	9421	1970	37	159	61	8	465	1112	91	37	40204	6887
	ROUTE SUMMARY - RURAL		22.700	9267												210370	42525
	ROUTE SUMMARY - MUNICIPAL		1.332	10882												14496	2527