Iowa DOT

Volume of Traffic on the Primary Road System

Route	2009	Rural/Municipal	Section length (miles)	Annual average daily traffic	Vehicle classification distribution of annual average daily traffic											Average daily vehicle miles
	2009				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	8100	77	6116	1906	40	166	61	9	376	1133	85	35	32076	7548
20	IA 14 INTERCHANGE	Rural	8.009	8200	80	6287	1833	36	149	55	8	366	1102	83	34	65674	14680
20	WEST LIMITS OF DIKE	Rural	6.486	11000	112	8860	2027	48	199	73	11	391	1179	89	37	71346	13147
20	CO RD T55 INTERCHANGE	Municipal	0.529	11000	112	8860	2027	48	199	73	11	391	1179	89	37	5819	1072
20	EAST LIMITS OF DIKE	Municipal	0.513	12100	125	9882	2092	54	226	83	13	396	1193	90	38	6207	1073
20	WEST LIMITS OF DIKE	Rural	0.749	12100	125	9882	2092	54	226	83	13	396	1193	90	38	9063	1567
20	EAST LIMITS OF DIKE	Municipal	0.290	12100	125	9882	2092	54	226	83	13	396	1193	90	38	3509	607
20	CO RD T69 INTERCHANGE AT
20	WEST LINE OF BLACK HAWK COUNTY	Rural	3.496	12100	125	9882	2092	54	226	83	13	396	1193	90	38	42302	7314
	ROUTE SUMMARY - RURAL		22.700	9712												220461	44256
	ROUTE SUMMARY - MUNICIPAL		1.332	11663												15535	2752