Iowa DOT

Volume of Traffic on the Primary Road System

Route	2009	Rural/Municipal	Section length (miles)	Annual average daily traffic	Vehicle classification distribution of annual average daily traffic											Average daily vehicle miles
	2009				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	12600	131	10343	2125	57	238	88	14	399	1201	91	38	37561	6335
20	IA 58 INTERCHANGE	Municipal	0.523	12600	131	10343	2125	57	238	88	14	399	1201	91	38	6590	1111
20	IA 27 INTERCHANGE AT EAST LIMITS OF CEDAR FALLS &
20	WEST LIMITS OF HUDSON	Municipal	1.091	16000	171	13538	2289	63	261	96	15	428	1289	97	41	17456	2497
20	EAST LIMITS HUDSON &
20	WEST LIMITS WATERLOO *	Municipal	0.385	25800	286	22554	2958	114	476	175	27	500	1506	113	47	9933	1139
20	US 63 INTERCHANGE *	Municipal	1.675	25800	286	22554	2958	114	476	175	27	500	1506	113	47	43215	4955
20	ANSBOROUGH AVENUE INTERCHANGE *	Municipal	1.532	29900	280	26346	3272	103	531	275	29	401	1754	129	50	45807	5013
20	IA 21 INTERCHANGE *	Municipal	1.508	27800	258	24317	3222	98	510	264	28	399	1745	129	50	41922	4859
20	I 380 & US 218 WEST INTERCHANGE	Municipal	1.782	25100	231	21733	3134	92	477	247	26	394	1722	127	48	44728	5585
20	DUPLICATE ROUTE WITH I 380 I 380 EAST INTERCHANGE TO
20	CO RD V51 INTERCHANGE	Rural	1.511	12300	135	10643	1521	58	241	89	14	258	778	59	24	18585	2298
20	WEST LINE OF BUCHANAN COUNTY	Rural	4.973	10800	117	9234	1448	49	202	74	11	256	772	58	24	53708	7201
	ROUTE SUMMARY - RURAL		9.465	11606												109854	15834
	ROUTE SUMMARY - MUNICIPAL		8.496	24676												209651	25159