Iowa DOT

Volume of Traffic on the Primary Road System

Route	2008	Rural/Municipal	Section length (miles)	Annual average daily traffic	Vehicle classification distribution of annual average daily traffic											Average daily vehicle miles
	2008				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	WEST LIMITS OF CEDAR FALLS	Rural	2.981	11800	112	9675	2012	42	177	68	9	468	1120	92	38	35176	5998
20	IA 58 INTERCHANGE	Municipal	0.523	11500	109	9440	1950	40	171	66	9	453	1086	89	36	6015	1020
20	IA 27 INTERCHANGE AT EAST LIMITS OF CEDAR FALLS &
20	WEST LIMITS OF HUDSON	Municipal	1.091	15000	147	12767	2085	53	227	87	12	465	1113	91	37	16365	2275
20	EAST LIMITS HUDSON &
20	WEST LIMITS WATERLOO *	Municipal	0.385	22900	233	20207	2458	69	293	113	15	536	1284	105	42	8817	946
20	US 63 INTERCHANGE *	Municipal	1.675	22900	233	20207	2458	69	293	113	15	536	1284	105	42	38358	4117
20	ANSBOROUGH AVENUE INTERCHANGE *	Municipal	1.532	26600	230	23443	2925	83	453	202	21	384	1617	124	41	40751	4481
20	IA 21 INTERCHANGE *	Municipal	1.508	25900	223	22736	2939	84	459	204	21	384	1620	124	42	39057	4432
20	I 380 & US 218 WEST INTERCHANGE	Municipal	1.782	24100	205	20932	2961	88	476	212	22	383	1614	124	41	42946	5277
20	DUPLICATE ROUTE WITH I 380 I 380 EAST INTERCHANGE TO
20	CO RD V51 INTERCHANGE	Rural	1.511	12300	122	10552	1625	56	237	91	12	335	802	66	27	18585	2455
20	WEST LINE OF BUCHANAN COUNTY	Rural	4.973	10100	98	8464	1537	48	202	77	10	327	783	64	26	50227	7644
	ROUTE SUMMARY - RURAL		9.465	10987												103988	16097
	ROUTE SUMMARY - MUNICIPAL		8.496	22635												192309	22548