Iowa DOT

Volume of Traffic on the Primary Road System

Route	2010	Rural/Municipal	Section length (miles)	Annual average daily traffic	Vehicle classification distribution of annual average daily traffic											Average daily vehicle miles
	2010				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	8200	39	6222	1939	42	183	51	6	215	1363	35	45	32472	7678
20	EAST-NORTH EAST-SOUTH RAMP	Rural	0.260	400	2	360	38	2	8	2	0	3	21	1	1	104	10
20	NORTH-EAST SOUTH-EAST RAMP	Rural	0.250	390	2	360	27	2	7	2	0	2	13	0	0	98	7
20	WEST-NORTH WEST-SOUTH RAMP	Rural	0.272	360	2	273	85	5	24	7	1	6	39	1	1	98	23
20	NORTH-WEST SOUTH-WEST RAMP	Rural	0.250	290	1	232	56	2	10	3	0	5	33	1	1	73	14
20	IA 14 INTERCHANGE	Rural	8.009	8300	41	6395	1864	37	164	46	5	209	1325	34	44	66475	14929
20	EAST-NORTH EAST-SOUTH RAMP	Rural	0.292	2080	12	1859	209	9	38	11	1	20	124	3	4	607	61
20	NORTH-EAST SOUTH-EAST RAMP	Rural	0.359	1790	10	1568	212	11	47	13	1	18	114	3	4	643	76
20	WEST-NORTH WEST-SOUTH RAMP	Rural	0.305	440	2	333	105	3	14	4	0	11	69	2	2	134	32
20	NORTH-WEST SOUTH-WEST RAMP	Rural	0.209	640	3	519	118	4	16	4	0	12	77	2	2	134	25
20	WEST LIMITS OF DIKE	Rural	6.486	11200	58	9081	2062	50	220	61	7	224	1417	37	47	72643	13374
20	CO RD T55 INTERCHANGE	Municipal	0.529	11100	57	8992	2051	50	219	61	7	223	1409	37	47	5872	1085
20	EAST-NORTH EAST-SOUTH RAMP	Municipal	0.347	900	5	819	76	5	24	7	1	5	32	1	1	312	26
20	WEST-NORTH WEST-SOUTH RAMP	Municipal	0.310	220	1	187	32	1	6	2	0	3	19	0	0	68	10
20	NORTH-WEST SOUTH-WEST LOOP	Municipal	0.177	260	2	241	18	1	4	1	0	2	10	0	0	46	3
20	NORTH-EAST SOUTH-EAST LOOP	Municipal	0.180	710	4	667	39	3	14	4	0	2	14	0	0	128	7
20	EAST LIMITS OF DIKE	Municipal	0.513	12200	64	10019	2118	56	248	69	8	225	1427	37	47	6259	1087
20	WEST LIMITS OF DIKE	Rural	0.749	12300	64	10109	2127	57	248	69	8	227	1434	37	47	9213	1593
20	EAST LIMITS OF DIKE	Municipal	0.290	12200	64	10019	2118	56	248	69	8	225	1427	37	47	3538	614
20	CO RD T69 INTERCHANGE AT
20	WEST LINE OF BLACK HAWK COUNTY	Rural	3.496	12300	64	10109	2127	57	248	69	8	227	1434	37	47	43001	7436
20	WEST-NORTH WEST-SOUTH RAMP	Rural	0.278	220	1	212	7	0	1	0	0	1	4	0	0	61	2
20	NORTH-WEST SOUTH-WEST RAMP	Rural	0.246	140	1	135	4	0	1	0	0	0	2	0	0	34	1
	ROUTE SUMMARY - RURAL		25.421	8882												225790	45261
	ROUTE SUMMARY - MUNICIPAL		2.346	6915												16223	2832