Iowa DOT

Volume of Traffic on the Primary Road System

Route	2015	Rural/Municipal	Section length (miles)	Annual average daily traffic	Vehicle classification distribution of annual average daily traffic											Average daily vehicle miles
	2015				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	40 Hamilton COUNTY
20	IA 17 & CO RD R21 WEST INTCHG	Rural	1.399	9300	40	7476	1785	41	203	45	5	143	1232	50	68	13011	2497
20	EAST-NORTH EAST-SOUTH RAMP	Rural	0.311	560	2	393	164	4	21	5	0	13	110	4	5	0	0
20	NORTH-EAST SOUTH-EAST RAMP	Rural	0.329	610	2	438	170	3	16	3	0	14	121	5	6	0	0
20	WEST-NORTH WEST-SOUTH RAMP	Rural	0.298	400	2	311	87	2	8	2	0	7	63	3	4	0	0
20	NORTH-WEST SOUTH-WEST RAMP	Rural	0.298	450	2	342	106	4	19	4	0	8	65	3	4	0	0
20	WEST LIMITS OF WEBSTER CITY	Rural	2.789	9600	40	7451	2109	53	258	57	6	166	1433	58	79	26774	5882
20	EAST LIMITS OF WEBSTER CITY	Municipal	0.248	9600	40	7451	2109	53	258	57	6	166	1433	58	79	2381	523
20	WEST LIMITS OF WEBSTER CITY	Rural	0.505	9600	40	7451	2109	53	258	57	6	166	1433	58	79	4848	1065
20	IA 17 & SUPERIOR ST EAST INTCHG	Municipal	1.005	9600	40	7451	2109	53	258	57	6	166	1433	58	79	9648	2120
20	EAST-NORTH EAST-SOUTH RAMP	Municipal	0.348	1060	5	957	98	7	32	7	1	5	42	2	2	0	0
20	NORTH-EAST SOUTH-EAST RAMP	Municipal	0.267	1020	5	897	119	5	27	6	1	8	66	3	4	0	0
20	WEST-NORTH WEST-SOUTH RAMP	Municipal	0.373	1060	5	951	104	5	23	5	1	7	59	2	3	0	0
20	NORTH-WEST SOUTH-WEST RAMP	Municipal	0.292	1480	7	1352	121	8	39	9	1	6	54	2	3	0	0
20	EAST LIMITS OF WEBSTER CITY	Municipal	1.244	9100	37	6962	2101	52	256	56	6	166	1429	57	78	11320	2614
20	CO RD R38 INTERCHANGE	Rural	3.733	9100	37	6962	2101	52	256	56	6	166	1429	57	78	33970	7843
20	EAST-NORTH EAST-SOUTH RAMP	Rural	0.230	120	1	101	18	1	7	2	0	1	7	0	0	0	0
20	WEST-NORTH WEST-SOUTH RAMP	Rural	0.329	70	0	64	5	0	2	0	0	0	2	0	0	0	0
20	NORTH-WEST SOUTH-WEST RAMP	Rural	0.249	90	0	84	5	0	1	0	0	0	2	0	0	0	0
20	NORTH-EAST SOUTH-EAST LOOP	Rural	0.199	100	0	89	10	0	1	0	0	1	7	0	0	0	0
20	US 69 INTERCHANGE	Rural	3.998	9200	38	7043	2119	53	261	57	6	167	1438	58	79	36782	8472
20	EAST-NORTH EAST-SOUTH RAMP	Rural	0.280	170	1	119	50	0	2	0	0	5	39	2	2	0	0
20	NORTH-EAST SOUTH-EAST RAMP	Rural	0.267	150	1	106	43	0	2	0	0	4	33	1	1	0	0
20	WEST-NORTH WEST-SOUTH RAMP	Rural	0.298	290	1	247	42	1	6	1	0	3	28	1	1	0	0
20	NORTH-WEST SOUTH-WEST RAMP	Rural	0.267	450	2	397	50	2	10	2	0	3	29	1	1	0	0
20	I 35 INTERCHANGE	Rural	3.635	8800	35	6644	2120	51	249	55	6	169	1453	58	79	31988	7706
20	CO RD R77 INTERCHANGE	Rural	2.453	8600	35	6651	1914	42	206	45	5	155	1334	54	74	21096	4695
20	EAST-NORTH EAST-SOUTH RAMP	Rural	0.298	80	0	60	20	0	2	0	0	2	14	1	1	0	0
20	NORTH-EAST SOUTH-EAST RAMP	Rural	0.267	80	0	60	19	1	4	1	0	1	11	0	0	0	0
20	WEST-NORTH WEST-SOUTH RAMP	Rural	0.311	100	0	92	8	0	2	0	0	0	4	0	0	0	0
20	NORTH-WEST SOUTH-WEST RAMP	Rural	0.267	90	0	77	12	1	4	1	0	1	5	0	0	0	0
20	WEST LINE OF HARDIN COUNTY	Rural	2.977	8600	35	6631	1933	42	206	45	5	157	1350	54	74	25602	5755
	ROUTE SUMMARY - RURAL		25.987	7511												194071	43915
	ROUTE SUMMARY - MUNICIPAL		3.777	6571												23349	5257