Iowa DOT

Volume of Traffic on the Primary Road System

Route	2016	Rural/Municipal	Section length (miles)	Annual average daily traffic	Vehicle classification distribution of annual average daily traffic											Average daily vehicle miles
	2016				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	410	2	394	14	2	8	2	0	0	2	0	0	0	0
20	NORTH-EAST SOUTH-EAST RAMP	Rural	0.269	510	2	491	17	2	8	2	0	1	5	0	0	0	0
20	WEST LIMITS OF CEDAR FALLS	Rural	2.981	14200	55	11117	3028	120	613	129	15	197	1769	76	108	42330	9026
20	IA 58 INTERCHANGE	Municipal	0.523	14200	55	11117	3028	120	613	129	15	197	1769	76	108	7427	1584
20	EAST-NORTH EAST-SOUTH RAMP	Municipal	0.298	2680	12	2504	164	7	37	8	1	10	91	4	5	0	0
20	SOUTH-EAST RAMP	Municipal	0.298	180	1	164	15	1	4	1	0	1	7	0	0	0	0
20	WEST-NORTH WEST-SOUTH RAMP	Municipal	0.360	830	3	695	132	3	13	3	0	10	93	4	5	0	0
20	NORTH-WEST SOUTH-WEST RAMP	Municipal	0.261	660	3	532	125	3	13	3	0	10	87	4	5	0	0
20	NORTH-EAST LOOP	Municipal	0.261	2320	11	2167	142	5	24	5	1	10	89	4	5	0	0
20	IA 27 INTERCHANGE AT EAST LIMITS OF CEDAR FALLS &
20	WEST LIMITS OF HUDSON	Municipal	1.091	17300	70	14173	3057	123	627	132	15	198	1777	76	108	18874	3335
20	EAST-NORTH EAST-SOUTH RAMP	Municipal	0.283	6100	28	5743	328	22	112	24	3	15	137	6	9	0	0
20	NORTH-EAST SOUTH-EAST RAMP	Municipal	0.218	6200	29	5867	304	19	95	20	2	15	138	6	9	0	0
20	WEST-NORTH WEST-SOUTH RAMP	Municipal	0.265	1210	5	1080	124	4	21	4	1	9	77	3	4	0	0
20	NORTH-WEST SOUTH-WEST RAMP	Municipal	0.242	1280	6	1121	154	7	36	8	1	9	84	4	5	0	0
20	EAST LIMITS HUDSON &
20	WEST LIMITS WATERLOO	Municipal	0.385	27200	117	23672	3412	152	778	164	19	210	1891	81	116	10472	1314
20	US 63 INTERCHANGE	Municipal	1.675	27200	117	23672	3412	152	778	164	19	210	1891	81	116	45560	5715
20	EAST-NORTH EAST-SOUTH RAMP	Municipal	0.366	2850	13	2601	236	16	84	18	2	11	95	4	5	0	0
20	NORTH-EAST SOUTH-EAST RAMP	Municipal	0.360	3140	14	2917	208	10	52	11	1	12	109	5	7	0	0
20	NORTH-WEST SOUTH-WEST LOOP	Municipal	0.218	1050	4	896	150	9	45	10	1	8	70	3	4	0	0
20	WEST-NORTH WEST-SOUTH LOOP	Municipal	0.500	1100	5	970	125	6	31	6	1	7	67	3	4	0	0
20	ANSBOROUGH AVENUE INTERCHANGE	Municipal	1.532	30900	96	27224	3580	97	952	137	14	224	1755	167	234	47339	5485
20	NORTH-EAST SOUTH-EAST RAMP	Municipal	0.258	1500	5	1452	43	3	26	4	0	1	7	1	1	0	0
20	WEST-NORTH WEST-SOUTH RAMP	Municipal	0.264	2900	10	2838	52	3	33	5	0	1	8	1	1	0	0
20	NORTH-WEST SOUTH-WEST RAMP	Municipal	0.249	2730	9	2671	50	4	37	5	1	0	2	0	0	0	0
20	EAST-NORTH EAST-SOUTH RAMP	Municipal	0.316	1530	5	1499	25	2	15	2	0	1	4	0	0	0	0
20	IA 21 INTERCHANGE	Municipal	1.508	28400	87	24756	3557	94	924	133	14	225	1763	168	236	42827	5364
20	EAST-NORTH EAST-SOUTH RAMP	Municipal	0.342	2820	10	2715	95	5	50	7	1	3	24	2	3	0	0
20	NORTH-EAST SOUTH-EAST RAMP	Municipal	0.280	2730	9	2616	104	5	48	7	1	4	32	3	4	0	0
20	WEST-NORTH WEST-SOUTH RAMP	Municipal	0.342	3990	13	3795	181	8	82	12	1	7	57	5	7	0	0
20	NORTH-WEST SOUTH-WEST RAMP	Municipal	0.280	3850	13	3655	182	8	83	12	1	7	57	5	7	0	0
20	I 380 & US 218 WEST INTERCHANGE	Municipal	1.782	26400	80	22895	3425	90	883	127	13	218	1704	163	229	47045	6103
20	DUPLICATE ROUTE WITH I 380 I 380 EAST INTERCHANGE TO
20	CO RD V51 INTERCHANGE	Rural	1.513	13300	56	11448	1795	67	341	72	8	120	1076	46	66	20123	2716
20	EAST-NORTH EAST-SOUTH RAMP	Rural	0.280	170	1	130	40	1	6	1	0	3	26	1	1	0	0
20	NORTH-EAST SOUTH-EAST RAMP	Rural	0.280	250	1	175	74	4	22	5	1	4	35	1	2	0	0
20	WEST-NORTH WEST-SOUTH RAMP	Rural	0.379	1400	6	1312	82	5	28	6	1	4	35	1	2	0	0
20	NORTH-WEST SOUTH-WEST RAMP	Rural	0.267	1340	6	1246	88	6	32	7	1	4	35	1	2	0	0
20	WEST LINE OF BUCHANAN COUNTY	Rural	4.973	11300	46	9362	1892	65	330	70	8	130	1169	50	71	56195	9409
	ROUTE SUMMARY - RURAL		11.227	10680												118648	21151
	ROUTE SUMMARY - MUNICIPAL		14.757	15899												219544	28900