Iowa DOT

Volume of Traffic on the Primary Road System

Route	2011	Rural/Municipal	Section length (miles)	Annual average daily traffic	Vehicle classification distribution of annual average daily traffic											Average daily vehicle miles
	2011				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	8400	39	6912	1448	38	162	47	5	141	985	30	40	11752	2026
20	EAST-NORTH EAST-SOUTH RAMP	Rural	0.311	560	2	365	193	5	20	6	1	19	133	4	5	174	60
20	NORTH-EAST SOUTH-EAST RAMP	Rural	0.329	640	2	439	198	3	13	4	0	21	147	4	5	211	65
20	WEST-NORTH WEST-SOUTH RAMP	Rural	0.298	300	1	249	50	2	10	3	0	4	29	1	1	89	15
20	NORTH-WEST SOUTH-WEST RAMP	Rural	0.298	380	2	331	47	3	13	4	0	3	22	1	1	113	14
20	WEST LIMITS OF WEBSTER CITY	Rural	2.789	8900	39	6853	2008	49	211	62	7	198	1383	42	55	24822	5600
20	EAST LIMITS OF WEBSTER CITY	Municipal	0.248	8900	39	6853	2008	49	211	62	7	198	1383	42	55	2207	498
20	WEST LIMITS OF WEBSTER CITY	Rural	0.505	8900	39	6853	2008	49	211	62	7	198	1383	42	55	4495	1014
20	IA 17 & SUPERIOR ST EAST INTCHG	Municipal	1.005	8900	39	6853	2008	49	211	62	7	198	1383	42	55	8945	2018
20	EAST-NORTH EAST-SOUTH RAMP	Municipal	0.348	1050	5	916	129	7	30	9	1	10	68	2	2	365	45
20	NORTH-EAST SOUTH-EAST RAMP	Municipal	0.267	1030	5	906	119	6	24	7	1	10	68	2	2	275	32
20	WEST-NORTH WEST-SOUTH RAMP	Municipal	0.373	1320	6	1146	167	6	26	8	1	15	105	3	4	492	62
20	NORTH-WEST SOUTH-WEST RAMP	Municipal	0.292	1370	7	1203	160	6	26	8	1	14	99	3	4	400	47
20	EAST LIMITS OF WEBSTER CITY	Municipal	1.242	8300	36	6335	1929	50	214	63	7	189	1315	40	52	10309	2396
20	CO RD R38 INTERCHANGE	Rural	3.723	8300	36	6335	1929	50	214	63	7	189	1315	40	52	30901	7182
20	EAST-NORTH EAST-SOUTH RAMP	Rural	0.230	60	0	43	17	1	3	1	0	2	11	0	0	14	4
20	WEST-NORTH WEST-SOUTH RAMP	Rural	0.329	90	0	86	4	0	1	0	0	0	2	0	0	30	1
20	NORTH-WEST SOUTH-WEST RAMP	Rural	0.249	110	1	98	11	1	6	2	0	0	2	0	0	27	3
20	NORTH-EAST SOUTH-EAST LOOP	Rural	0.199	60	0	45	15	0	1	0	0	2	11	0	0	12	3
20	US 69 INTERCHANGE	Rural	4.009	8200	35	6218	1946	49	211	62	7	191	1332	41	53	32874	7802
20	EAST-NORTH EAST-SOUTH RAMP	Rural	0.280	130	1	105	25	1	4	1	0	2	15	0	0	36	7
20	NORTH-EAST SOUTH-EAST RAMP	Rural	0.267	240	1	168	71	1	6	2	0	7	51	2	2	64	19
20	WEST-NORTH WEST-SOUTH RAMP	Rural	0.298	320	2	276	43	2	9	3	0	3	24	1	1	95	13
20	NORTH-WEST SOUTH-WEST RAMP	Rural	0.267	320	2	272	47	3	12	3	0	3	24	1	1	85	13
20	I 35 INTERCHANGE	Rural	3.635	8000	34	6014	1952	47	201	59	6	194	1350	41	53	29080	7096
20	CO RD R77 INTERCHANGE	Rural	2.453	8100	35	6227	1838	41	177	52	6	185	1288	39	51	19869	4509
20	EAST-NORTH EAST-SOUTH RAMP	Rural	0.298	50	0	38	11	1	6	2	0	0	2	0	0	15	3
20	NORTH-EAST SOUTH-EAST RAMP	Rural	0.267	45	0	33	11	1	3	1	0	1	6	0	0	12	3
20	WEST-NORTH WEST-SOUTH RAMP	Rural	0.311	45	0	32	13	0	1	0	0	1	10	0	0	14	4
20	NORTH-WEST SOUTH-WEST RAMP	Rural	0.267	45	0	33	11	0	1	0	0	1	8	0	0	12	3
20	WEST LINE OF HARDIN COUNTY	Rural	2.977	8100	35	6228	1836	43	184	54	6	183	1277	39	51	24114	5466
	ROUTE SUMMARY - RURAL		25.988	6884												178910	40925
	ROUTE SUMMARY - MUNICIPAL		3.775	6091												22993	5098