Iowa DOT

Volume of Traffic on the Primary Road System

Route	2016	Rural/Municipal	Section length (miles)	Annual average daily traffic	Vehicle classification distribution of annual average daily traffic											Average daily vehicle miles
	2016				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	9600	38	7723	1839	41	211	45	5	141	1265	54	77	13430	2573
20	EAST-NORTH EAST-SOUTH RAMP	Rural	0.311	580	2	409	169	4	22	5	1	13	113	5	7	0	0
20	NORTH-EAST SOUTH-EAST RAMP	Rural	0.329	630	2	453	175	3	17	4	0	14	124	5	7	0	0
20	WEST-NORTH WEST-SOUTH RAMP	Rural	0.298	410	2	319	89	2	8	2	0	7	64	3	4	0	0
20	NORTH-WEST SOUTH-WEST RAMP	Rural	0.298	460	2	349	109	4	20	4	0	7	67	3	4	0	0
20	WEST LIMITS OF WEBSTER CITY	Rural	2.789	9900	38	7812	2050	53	268	57	7	152	1371	59	84	27611	5717
20	EAST LIMITS OF WEBSTER CITY	Municipal	0.248	9900	38	7812	2050	53	268	57	7	152	1371	59	84	2455	508
20	WEST LIMITS OF WEBSTER CITY	Rural	0.505	9900	38	7812	2050	53	268	57	7	152	1371	59	84	5000	1035
20	IA 17 & SUPERIOR ST EAST INTCHG	Municipal	1.005	9900	38	7812	2050	53	268	57	7	152	1371	59	84	9950	2060
20	EAST-NORTH EAST-SOUTH RAMP	Municipal	0.348	1080	5	975	100	7	34	7	1	5	43	2	3	0	0
20	NORTH-EAST SOUTH-EAST RAMP	Municipal	0.267	1040	5	944	92	5	28	6	1	5	43	2	3	0	0
20	WEST-NORTH WEST-SOUTH RAMP	Municipal	0.373	1080	5	969	106	5	24	5	1	7	59	3	4	0	0
20	NORTH-WEST SOUTH-WEST RAMP	Municipal	0.292	1510	7	1380	123	8	40	8	1	6	54	2	3	0	0
20	EAST LIMITS OF WEBSTER CITY	Municipal	1.244	9400	36	7351	2013	52	266	56	7	149	1343	58	83	11694	2504
20	CO RD R38 INTERCHANGE	Rural	3.733	9400	36	7351	2013	52	266	56	7	149	1343	58	83	35090	7515
20	EAST-NORTH EAST-SOUTH RAMP	Rural	0.230	120	0	102	18	1	7	1	0	1	7	0	0	0	0
20	WEST-NORTH WEST-SOUTH RAMP	Rural	0.329	70	0	65	5	0	2	0	0	0	2	0	0	0	0
20	NORTH-WEST SOUTH-WEST RAMP	Rural	0.249	90	0	85	5	0	1	0	0	0	2	0	0	0	0
20	NORTH-EAST SOUTH-EAST LOOP	Rural	0.199	100	0	90	10	0	1	0	0	1	7	0	0	0	0
20	US 69 INTERCHANGE	Rural	3.998	9500	37	7432	2031	53	271	57	7	150	1352	58	83	37981	8120
20	EAST-NORTH EAST-SOUTH RAMP	Rural	0.280	180	1	128	51	0	2	0	0	4	40	2	3	0	0
20	NORTH-EAST SOUTH-EAST RAMP	Rural	0.267	160	1	115	44	0	2	0	0	4	34	1	1	0	0
20	WEST-NORTH WEST-SOUTH RAMP	Rural	0.298	300	1	256	43	1	6	1	0	3	29	1	1	0	0
20	NORTH-WEST SOUTH-WEST RAMP	Rural	0.267	460	2	407	51	2	10	2	0	3	30	1	1	0	0
20	I 35 INTERCHANGE	Rural	3.635	9100	35	7034	2032	51	259	55	6	152	1367	59	84	33079	7386
20	CO RD R77 INTERCHANGE	Rural	2.453	8900	35	7121	1744	42	215	45	5	131	1183	51	72	21832	4278
20	EAST-NORTH EAST-SOUTH RAMP	Rural	0.298	80	0	58	21	0	2	0	0	2	15	1	1	0	0
20	NORTH-EAST SOUTH-EAST RAMP	Rural	0.267	80	0	61	19	1	4	1	0	1	11	0	0	0	0
20	WEST-NORTH WEST-SOUTH RAMP	Rural	0.311	100	0	91	8	0	2	0	0	0	4	0	0	0	0
20	NORTH-WEST SOUTH-WEST RAMP	Rural	0.267	90	0	78	12	1	4	1	0	1	5	0	0	0	0
20	WEST LINE OF HARDIN COUNTY	Rural	2.977	8900	35	7101	1764	42	215	45	5	133	1199	51	72	26495	5251
	ROUTE SUMMARY - RURAL		25.987	7760												200518	41875
	ROUTE SUMMARY - MUNICIPAL		3.777	6777												24099	5072