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	38 Grundy COUNTY
20	CO RD T19 INTERCHANGE	Rural	3.959	8600	42	6283	2275	54	248	56	6	172	1605	59	77	34047	9007
20	EAST-NORTH EAST-SOUTH RAMP	Rural	0.260	480	3	377	100	3	15	3	0	7	65	2	3	0	0
20	NORTH-EAST SOUTH-EAST RAMP	Rural	0.250	420	2	316	102	3	15	3	0	7	67	2	3	0	0
20	WEST-NORTH WEST-SOUTH RAMP	Rural	0.272	400	2	308	90	2	10	2	0	7	64	2	3	0	0
20	NORTH-WEST SOUTH-WEST RAMP	Rural	0.250	360	2	275	83	1	4	1	0	7	65	2	3	0	0
20	IA 14 INTERCHANGE	Rural	8.009	8800	43	6453	2304	57	264	59	6	172	1609	59	77	70479	18453
20	EAST-NORTH EAST-SOUTH RAMP	Rural	0.292	2270	12	1837	421	27	123	28	3	22	202	7	10	0	0
20	NORTH-EAST SOUTH-EAST RAMP	Rural	0.359	2150	12	1748	391	15	71	16	2	26	241	9	12	0	0
20	WEST-NORTH WEST-SOUTH RAMP	Rural	0.305	680	4	594	82	1	5	1	0	7	62	2	3	0	0
20	NORTH-WEST SOUTH-WEST RAMP	Rural	0.209	520	3	437	80	1	5	1	0	6	60	2	3	0	0
20	WEST LIMITS OF DIKE	Rural	6.486	12000	60	8986	2954	97	447	100	10	206	1930	71	93	77832	19160
20	CO RD T55 INTERCHANGE	Municipal	0.529	12000	61	9243	2696	59	271	61	6	206	1930	71	93	6348	1426
20	EAST-NORTH EAST-SOUTH RAMP	Municipal	0.347	950	4	646	300	15	68	15	2	18	169	6	7	0	0
20	WEST-NORTH WEST-SOUTH RAMP	Municipal	0.310	300	2	229	70	1	5	1	0	6	52	2	2	0	0
20	NORTH-WEST SOUTH-WEST LOOP	Municipal	0.177	220	1	159	60	1	5	1	0	5	44	2	2	0	0
20	NORTH-EAST SOUTH-EAST LOOP	Municipal	0.180	700	3	398	299	13	59	13	1	19	179	7	9	0	0
20	EAST LIMITS OF DIKE	Municipal	0.513	13100	64	9614	3423	122	562	126	13	233	2181	80	105	6720	1756
20	WEST LIMITS OF DIKE	Rural	0.749	13100	64	9614	3423	122	562	126	13	233	2181	80	105	9812	2564
20	EAST LIMITS OF DIKE	Municipal	0.290	13100	64	9614	3423	122	562	126	13	233	2181	80	105	3799	993
20	CO RD T69 INTERCHANGE AT
20	WEST LINE OF BLACK HAWK COUNTY	Rural	3.496	13100	64	9614	3423	122	562	126	13	233	2181	80	105	45798	11967
20	WEST-NORTH WEST-SOUTH RAMP	Rural	0.278	340	2	317	21	2	10	2	0	1	5	0	0	0	0
20	NORTH-WEST SOUTH-WEST RAMP	Rural	0.246	380	2	353	25	3	13	3	0	1	5	0	0	0	0
	ROUTE SUMMARY - RURAL		25.420	9455												237968	61151
	ROUTE SUMMARY - MUNICIPAL		2.346	7440												16867	4175