Iowa DOT

Volume of Traffic on the Primary Road System

Route	2007	Rural/Municipal	Section length (miles)	Annual average daily traffic	Vehicle classification distribution of annual average daily traffic											Average daily vehicle miles
	2007				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	64	6019	1916	34	148	58	7	466	1089	79	34	31680	7587
20	IA 14 INTERCHANGE	Rural	8.009	7700	62	5837	1800	29	124	49	6	445	1039	76	33	61669	14416
20	WEST LIMITS OF DIKE	Rural	6.486	10900	94	8835	1971	34	147	58	7	482	1126	82	36	70697	12784
20	CO RD T55 INTERCHANGE	Municipal	0.529	10700	92	8674	1933	33	144	57	7	473	1104	80	35	5660	1023
20	EAST LIMITS OF DIKE	Municipal	0.513	11500	100	9432	1967	36	158	62	7	476	1111	81	35	5900	1009
20	WEST LIMITS OF DIKE	Rural	0.749	11700	102	9591	2006	37	161	64	8	485	1133	82	36	8763	1502
20	EAST LIMITS OF DIKE	Municipal	0.290	11500	100	9432	1967	36	158	62	7	476	1111	81	35	3335	570
20	CO RD T69 INTERCHANGE AT
20	WEST LINE OF BLACK HAWK COUNTY	Rural	3.496	11700	102	9591	2006	37	161	64	8	485	1133	82	36	40903	7013
	ROUTE SUMMARY - RURAL		22.700	9415												213712	43302
	ROUTE SUMMARY - MUNICIPAL		1.332	11182												14895	2602