Iowa DOT

Volume of Traffic on the Primary Road System

Route	2006	Rural/Municipal	Section length (miles)	Annual average daily traffic	Vehicle classification distribution of annual average daily traffic											Average daily vehicle miles
	2006				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	12000	102	9857	2040	38	181	72	9	500	1121	82	37	35772	6081
20	IA 58 INTERCHANGE	Municipal	0.523	12000	102	9857	2040	38	181	72	9	500	1121	82	37	6276	1067
20	IA 27 INTERCHANGE AT EAST LIMITS OF CEDAR FALLS &
20	WEST LIMITS OF HUDSON	Municipal	1.091	15600	137	13281	2181	51	239	96	11	513	1149	84	39	17020	2379
20	EAST LIMITS HUDSON &
20	WEST LIMITS WATERLOO *	Municipal	0.385	24000	219	21208	2571	66	309	124	15	591	1326	97	43	9240	990
20	US 63 INTERCHANGE *	Municipal	1.675	24000	219	21208	2571	66	309	124	15	591	1326	97	43	40200	4306
20	ANSBOROUGH AVENUE INTERCHANGE *	Municipal	1.531	27800	192	24680	2923	65	368	204	20	445	1610	140	70	42562	4475
20	IA 21 INTERCHANGE *	Municipal	1.510	27100	186	23984	2925	65	367	204	20	446	1613	140	70	40921	4417
20	I 380 & US 218 WEST INTERCHANGE	Municipal	1.782	26100	179	23068	2849	60	337	187	19	441	1596	139	70	46510	5077
20	DUPLICATE ROUTE WITH I 380 I 380 EAST INTERCHANGE TO
20	CO RD V51 INTERCHANGE	Rural	1.511	12100	107	10364	1628	50	234	94	11	356	798	58	27	18283	2460
20	WEST LINE OF BUCHANAN COUNTY	Rural	4.973	10300	89	8651	1559	44	206	82	10	350	784	57	27	51222	7753
	ROUTE SUMMARY - RURAL		9.465	11123												105277	16294
	ROUTE SUMMARY - MUNICIPAL		8.497	23859												202729	22711