Iowa DOT

Volume of Traffic on the Primary Road System

Route	2014	Rural/Municipal	Section length (miles)	Annual average daily traffic	Vehicle classification distribution of annual average daily traffic											Average daily vehicle miles
	2014				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	8700	48	7158	1495	39	177	40	4	111	1037	38	50	12171	2092
20	EAST-NORTH EAST-SOUTH RAMP	Rural	0.311	890	5	686	199	5	22	5	1	15	140	5	6	0	0
20	NORTH-EAST SOUTH-EAST RAMP	Rural	0.329	870	4	661	204	3	14	3	0	17	154	6	7	0	0
20	WEST-NORTH WEST-SOUTH RAMP	Rural	0.298	310	2	257	51	2	10	2	0	3	30	1	1	0	0
20	NORTH-WEST SOUTH-WEST RAMP	Rural	0.298	310	2	260	48	3	14	3	0	3	24	1	1	0	0
20	WEST LIMITS OF WEBSTER CITY	Rural	2.789	9800	53	7928	1819	41	188	42	4	139	1295	47	61	27332	5073
20	EAST LIMITS OF WEBSTER CITY	Municipal	0.248	9600	52	7766	1782	40	185	41	4	136	1268	46	60	2381	442
20	WEST LIMITS OF WEBSTER CITY	Rural	0.505	9800	53	7928	1819	41	188	42	4	139	1295	47	61	4949	919
20	IA 17 & SUPERIOR ST EAST INTCHG	Municipal	1.006	9600	52	7766	1782	40	185	41	4	136	1268	46	60	9658	1793
20	EAST-NORTH EAST-SOUTH RAMP	Municipal	0.348	1030	6	908	116	5	24	5	1	7	68	2	3	0	0
20	NORTH-EAST SOUTH-EAST RAMP	Municipal	0.267	1010	6	897	107	4	18	4	0	7	68	2	3	0	0
20	WEST-NORTH WEST-SOUTH RAMP	Municipal	0.373	1200	7	1014	179	8	37	8	1	11	105	4	5	0	0
20	NORTH-WEST SOUTH-WEST RAMP	Municipal	0.292	1250	7	1071	172	8	37	8	1	11	99	4	5	0	0
20	EAST LIMITS OF WEBSTER CITY	Municipal	1.243	9200	50	7495	1655	33	153	34	4	129	1201	44	57	11436	2057
20	CO RD R38 INTERCHANGE	Rural	3.733	9400	51	7660	1689	34	156	35	4	131	1226	45	59	35090	6305
20	EAST-NORTH EAST-SOUTH RAMP	Rural	0.230	60	0	43	17	1	3	1	0	1	11	0	0	0	0
20	WEST-NORTH WEST-SOUTH RAMP	Rural	0.329	90	1	78	12	1	6	1	0	0	3	0	0	0	0
20	NORTH-WEST SOUTH-WEST RAMP	Rural	0.249	110	1	98	11	1	6	1	0	0	2	0	0	0	0
20	NORTH-EAST SOUTH-EAST LOOP	Rural	0.199	60	0	45	15	0	1	0	0	1	11	0	0	0	0
20	US 69 INTERCHANGE	Rural	3.998	9400	51	7651	1698	32	147	33	3	133	1244	45	59	37581	6789
20	EAST-NORTH EAST-SOUTH RAMP	Rural	0.280	240	1	213	25	1	5	1	0	2	15	1	1	0	0
20	NORTH-EAST SOUTH-EAST RAMP	Rural	0.267	250	1	176	73	1	6	1	0	6	54	2	2	0	0
20	WEST-NORTH WEST-SOUTH RAMP	Rural	0.298	330	2	284	44	2	10	2	0	3	25	1	1	0	0
20	NORTH-WEST SOUTH-WEST RAMP	Rural	0.267	330	2	275	53	3	16	4	0	3	25	1	1	0	0
20	I 35 INTERCHANGE	Rural	3.635	9200	50	7455	1696	28	130	29	3	135	1264	46	60	33442	6165
20	CO RD R77 INTERCHANGE	Rural	2.453	8500	43	6461	1996	41	188	42	4	155	1444	53	70	20851	4896
20	EAST-NORTH EAST-SOUTH RAMP	Rural	0.298	50	0	31	19	1	6	1	0	1	8	0	0	0	0
20	NORTH-EAST SOUTH-EAST RAMP	Rural	0.267	45	0	29	16	1	3	1	0	1	10	0	0	0	0
20	WEST-NORTH WEST-SOUTH RAMP	Rural	0.311	45	0	32	13	0	1	0	0	1	10	0	0	0	0
20	NORTH-WEST SOUTH-WEST RAMP	Rural	0.267	45	0	34	11	0	1	0	0	1	8	0	0	0	0
20	WEST LINE OF HARDIN COUNTY	Rural	2.977	8500	43	6449	2008	43	196	44	5	155	1444	53	70	25305	5978
	ROUTE SUMMARY - RURAL		25.987	7616												196721	38217
	ROUTE SUMMARY - MUNICIPAL		3.777	6596												23475	4292