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	7 Black Hawk COUNTY
20	EAST-NORTH EAST-SOUTH RAMP	Rural	0.285	390	2	373	14	2	8	2	0	0	3	0	0	0	0
20	NORTH-EAST SOUTH-EAST RAMP	Rural	0.269	470	3	450	17	2	8	2	0	1	5	0	0	0	0
20	WEST LIMITS OF CEDAR FALLS	Rural	2.981	13300	65	9817	3418	122	561	126	13	233	2179	80	105	39647	10189
20	IA 58 INTERCHANGE	Municipal	0.523	13300	65	9817	3418	122	561	126	13	233	2179	80	105	6956	1788
20	EAST-NORTH EAST-SOUTH RAMP	Municipal	0.298	2610	16	2434	160	8	35	8	1	10	91	3	4	0	0
20	SOUTH-EAST RAMP	Municipal	0.298	180	1	164	15	1	4	1	0	1	8	0	0	0	0
20	WEST-NORTH WEST-SOUTH RAMP	Municipal	0.360	800	4	667	129	3	13	3	0	10	92	3	4	0	0
20	NORTH-WEST SOUTH-WEST RAMP	Municipal	0.261	640	4	562	74	3	13	3	0	5	46	2	2	0	0
20	NORTH-EAST LOOP	Municipal	0.261	2260	14	2108	138	5	23	5	1	9	88	3	4	0	0
20	IA 27 INTERCHANGE AT EAST LIMITS OF CEDAR FALLS &
20	WEST LIMITS OF HUDSON	Municipal	1.091	16900	88	13284	3528	130	597	134	14	238	2227	81	106	18438	3849
20	EAST-NORTH EAST-SOUTH RAMP	Municipal	0.283	6000	37	5643	320	23	107	24	3	15	137	5	6	0	0
20	NORTH-EAST SOUTH-EAST RAMP	Municipal	0.218	6100	38	5688	375	20	91	20	2	22	203	7	10	0	0
20	WEST-NORTH WEST-SOUTH RAMP	Municipal	0.265	1180	7	1053	120	4	20	4	0	8	76	3	4	0	0
20	NORTH-WEST SOUTH-WEST RAMP	Municipal	0.242	1250	7	1093	150	8	35	8	1	9	83	3	4	0	0
20	EAST LIMITS HUDSON &
20	WEST LIMITS WATERLOO	Municipal	0.385	26500	149	22399	3953	161	741	166	17	258	2407	88	115	10203	1522
20	US 63 INTERCHANGE	Municipal	1.675	26500	149	22399	3953	161	741	166	17	258	2407	88	115	44388	6621
20	EAST-NORTH EAST-SOUTH RAMP	Municipal	0.366	2780	17	2533	230	17	80	18	2	10	95	3	4	0	0
20	NORTH-EAST SOUTH-EAST RAMP	Municipal	0.360	3060	19	2838	203	11	50	11	1	12	109	4	5	0	0
20	NORTH-WEST SOUTH-WEST LOOP	Municipal	0.218	1020	6	888	126	9	43	10	1	6	53	2	2	0	0
20	WEST-NORTH WEST-SOUTH LOOP	Municipal	0.500	1070	6	942	122	6	29	7	1	7	66	2	3	0	0
20	ANSBOROUGH AVENUE INTERCHANGE	Municipal	1.532	30200	94	25966	4138	90	929	132	19	377	2211	163	217	46266	6339
20	NORTH-EAST SOUTH-EAST RAMP	Municipal	0.258	1460	5	1394	61	2	25	4	1	4	22	2	2	0	0
20	WEST-NORTH WEST-SOUTH RAMP	Municipal	0.264	2830	10	2769	51	3	32	5	1	1	8	1	1	0	0
20	NORTH-WEST SOUTH-WEST RAMP	Municipal	0.249	2660	9	2601	49	4	37	5	1	0	2	0	0	0	0
20	EAST-NORTH EAST-SOUTH RAMP	Municipal	0.316	1490	5	1459	25	1	15	2	0	1	4	0	0	0	0
20	IA 21 INTERCHANGE	Municipal	1.508	27700	85	23489	4124	87	901	128	18	379	2226	164	218	41772	6219
20	EAST-NORTH EAST-SOUTH RAMP	Municipal	0.342	2750	10	2647	93	5	49	7	1	4	23	2	3	0	0
20	NORTH-EAST SOUTH-EAST RAMP	Municipal	0.280	2660	9	2549	102	5	48	7	1	5	31	2	3	0	0
20	WEST-NORTH WEST-SOUTH RAMP	Municipal	0.342	3890	13	3700	176	8	79	11	2	10	57	4	5	0	0
20	NORTH-WEST SOUTH-WEST RAMP	Municipal	0.280	3750	13	3590	146	8	80	11	2	6	34	2	3	0	0
20	I 380 & US 218 WEST INTERCHANGE	Municipal	1.782	25440	77	21363	3997	81	838	119	17	373	2191	162	215	45334	7123
20	DUPLICATE ROUTE WITH I 380 I 380 EAST INTERCHANGE TO
20	CO RD V51 INTERCHANGE	Rural	1.513	12800	72	10903	1825	72	331	74	8	120	1125	41	54	19366	2761
20	EAST-NORTH EAST-SOUTH RAMP	Rural	0.280	150	1	111	38	1	5	1	0	3	25	1	1	0	0
20	NORTH-EAST SOUTH-EAST RAMP	Rural	0.280	230	1	159	70	4	20	5	0	4	34	1	1	0	0
20	WEST-NORTH WEST-SOUTH RAMP	Rural	0.379	1310	8	1223	78	6	26	6	1	4	34	1	1	0	0
20	NORTH-WEST SOUTH-WEST RAMP	Rural	0.267	1250	8	1159	83	6	29	7	1	4	34	1	1	0	0
20	WEST LINE OF BUCHANAN COUNTY	Rural	4.973	10600	58	8770	1772	66	302	68	7	119	1116	41	54	52714	8812
	ROUTE SUMMARY - RURAL		11.227	10056												111727	21762
	ROUTE SUMMARY - MUNICIPAL		14.757	15455												213357	33461