Iowa DOT

Volume of Traffic on the Primary Road System

Route	2013	Rural/Municipal	Section length (miles)	Annual average daily traffic	Vehicle classification distribution of annual average daily traffic											Average daily vehicle miles
	2013				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	3.959	8700	39	6635	2026	48	213	51	5	171	1425	49	64	34443	8021
20	EAST-NORTH EAST-SOUTH RAMP	Rural	0.260	470	2	388	79	2	8	2	0	7	56	2	2	122	21
20	NORTH-EAST SOUTH-EAST RAMP	Rural	0.250	410	2	337	71	2	8	2	0	6	49	2	2	103	18
20	WEST-NORTH WEST-SOUTH RAMP	Rural	0.272	390	2	261	128	4	16	4	0	10	87	3	4	106	35
20	NORTH-WEST SOUTH-WEST RAMP	Rural	0.250	350	1	228	121	2	11	3	0	11	88	3	4	88	30
20	IA 14 INTERCHANGE	Rural	8.009	8900	41	6932	1927	45	202	49	5	163	1356	47	60	71280	15433
20	EAST-NORTH EAST-SOUTH RAMP	Rural	0.292	2170	12	1957	201	11	48	12	1	13	108	4	5	634	59
20	NORTH-EAST SOUTH-EAST RAMP	Rural	0.359	2210	12	1966	232	8	36	9	1	18	149	5	6	793	83
20	WEST-NORTH WEST-SOUTH RAMP	Rural	0.305	570	3	467	100	1	5	1	0	9	77	3	4	174	31
20	NORTH-WEST SOUTH-WEST RAMP	Rural	0.209	510	2	408	100	3	14	3	0	8	66	2	2	107	21
20	WEST LIMITS OF DIKE	Rural	6.486	12200	59	9981	2160	60	267	64	7	176	1470	51	66	79129	14010
20	CO RD T55 INTERCHANGE	Municipal	0.529	12200	59	9981	2160	60	267	64	7	176	1470	51	66	6454	1143
20	EAST-NORTH EAST-SOUTH RAMP	Municipal	0.347	980	5	774	201	11	48	12	1	13	108	4	5	340	70
20	WEST-NORTH WEST-SOUTH RAMP	Municipal	0.310	300	1	199	100	1	5	1	0	9	77	3	4	93	31
20	NORTH-WEST SOUTH-WEST LOOP	Municipal	0.177	220	1	120	100	3	14	3	0	8	66	2	2	39	18
20	NORTH-EAST SOUTH-EAST LOOP	Municipal	0.180	800	3	565	232	8	36	9	1	18	149	5	6	144	42
20	EAST LIMITS OF DIKE	Municipal	0.513	13500	66	11042	2393	74	331	80	8	190	1584	55	71	6926	1228
20	WEST LIMITS OF DIKE	Rural	0.749	13500	66	11042	2393	74	331	80	8	190	1584	55	71	10112	1792
20	EAST LIMITS OF DIKE	Municipal	0.290	13500	66	11042	2393	74	331	80	8	190	1584	55	71	3915	694
20	CO RD T69 INTERCHANGE AT
20	WEST LINE OF BLACK HAWK COUNTY	Rural	3.496	13500	66	11042	2393	74	331	80	8	190	1584	55	71	47196	8366
20	WEST-NORTH WEST-SOUTH RAMP	Rural	0.278	350	2	333	15	1	5	1	0	1	6	0	0	97	4
20	NORTH-WEST SOUTH-WEST RAMP	Rural	0.246	300	2	283	15	1	5	1	0	1	7	0	0	74	4
	ROUTE SUMMARY - RURAL		25.420	9617												244458	47928
	ROUTE SUMMARY - MUNICIPAL		2.346	7634												17911	3226