Iowa DOT

Volume of Traffic on the Primary Road System

Route	2015	Rural/Municipal	Section length (miles)	Annual average daily traffic	Vehicle classification distribution of annual average daily traffic											Average daily vehicle miles
	2015				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	400	2	384	14	2	8	2	0	0	2	0	0	0	0
20	NORTH-EAST SOUTH-EAST RAMP	Rural	0.269	490	3	471	17	2	8	2	0	1	5	0	0	0	0
20	WEST LIMITS OF CEDAR FALLS	Rural	2.981	13800	54	10201	3544	120	589	130	13	258	2223	89	121	41138	10565
20	IA 58 INTERCHANGE	Municipal	0.523	13400	53	9901	3446	117	573	126	13	251	2161	87	119	7008	1802
20	EAST-NORTH EAST-SOUTH RAMP	Municipal	0.298	2630	13	2456	161	7	36	8	1	10	90	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	810	4	676	130	3	13	3	0	11	92	4	5	0	0
20	NORTH-WEST SOUTH-WEST RAMP	Municipal	0.261	650	3	573	74	3	13	3	0	5	45	2	3	0	0
20	NORTH-EAST LOOP	Municipal	0.261	2280	11	2129	139	5	23	5	1	10	88	4	5	0	0
20	IA 27 INTERCHANGE AT EAST LIMITS OF CEDAR FALLS &
20	WEST LIMITS OF HUDSON	Municipal	1.091	17000	71	13373	3556	124	610	134	14	256	2208	89	121	18547	3880
20	EAST-NORTH EAST-SOUTH RAMP	Municipal	0.283	6000	30	5648	322	22	109	24	2	16	135	5	7	0	0
20	NORTH-EAST SOUTH-EAST RAMP	Municipal	0.218	6100	30	5691	378	19	93	20	2	23	201	8	11	0	0
20	WEST-NORTH WEST-SOUTH RAMP	Municipal	0.265	1190	6	1063	121	4	20	4	0	9	76	3	4	0	0
20	NORTH-WEST SOUTH-WEST RAMP	Municipal	0.242	1260	6	1103	151	7	35	8	1	10	83	3	4	0	0
20	EAST LIMITS HUDSON &
20	WEST LIMITS WATERLOO	Municipal	0.385	26700	120	22595	3985	154	756	166	17	277	2387	96	131	10280	1534
20	US 63 INTERCHANGE	Municipal	1.675	26700	120	22595	3985	154	756	166	17	277	2387	96	131	44723	6675
20	EAST-NORTH EAST-SOUTH RAMP	Municipal	0.366	2800	14	2554	232	17	82	18	2	11	94	4	5	0	0
20	NORTH-EAST SOUTH-EAST RAMP	Municipal	0.360	3080	15	2860	205	10	51	11	1	13	108	4	5	0	0
20	NORTH-WEST SOUTH-WEST LOOP	Municipal	0.218	1030	5	897	128	9	44	10	1	6	53	2	3	0	0
20	WEST-NORTH WEST-SOUTH LOOP	Municipal	0.500	1080	5	952	123	6	30	7	1	8	66	3	4	0	0
20	ANSBOROUGH AVENUE INTERCHANGE	Municipal	1.532	30400	94	26134	4171	88	937	139	14	299	2223	199	271	46573	6390
20	NORTH-EAST SOUTH-EAST RAMP	Municipal	0.258	1470	5	1404	61	2	25	4	0	3	22	2	3	0	0
20	WEST-NORTH WEST-SOUTH RAMP	Municipal	0.264	2850	10	2789	51	3	32	5	0	1	8	1	1	0	0
20	NORTH-WEST SOUTH-WEST RAMP	Municipal	0.249	2680	9	2622	49	3	37	5	1	0	2	0	0	0	0
20	EAST-NORTH EAST-SOUTH RAMP	Municipal	0.316	1500	5	1469	25	1	15	2	0	1	4	0	0	0	0
20	IA 21 INTERCHANGE	Municipal	1.508	27900	85	23658	4157	85	909	135	13	301	2239	201	274	42073	6269
20	EAST-NORTH EAST-SOUTH RAMP	Municipal	0.342	2770	10	2668	93	5	49	7	1	3	23	2	3	0	0
20	NORTH-EAST SOUTH-EAST RAMP	Municipal	0.280	2680	9	2568	102	4	48	7	1	4	31	3	4	0	0
20	WEST-NORTH WEST-SOUTH RAMP	Municipal	0.342	3920	13	3728	178	8	80	12	1	8	57	5	7	0	0
20	NORTH-WEST SOUTH-WEST RAMP	Municipal	0.280	3780	13	3620	147	8	81	12	1	4	33	3	4	0	0
20	I 380 & US 218 WEST INTERCHANGE	Municipal	1.782	25600	78	21494	4029	79	845	126	13	296	2203	198	270	45619	7180
20	DUPLICATE ROUTE WITH I 380 I 380 EAST INTERCHANGE TO
20	CO RD V51 INTERCHANGE	Rural	1.513	13300	60	11346	1893	71	348	77	8	133	1148	46	63	20123	2864
20	EAST-NORTH EAST-SOUTH RAMP	Rural	0.280	160	1	121	39	1	6	1	0	3	26	1	1	0	0
20	NORTH-EAST SOUTH-EAST RAMP	Rural	0.280	240	1	167	72	4	21	5	0	4	34	1	1	0	0
20	WEST-NORTH WEST-SOUTH RAMP	Rural	0.379	1360	7	1273	80	5	27	6	1	4	34	1	1	0	0
20	NORTH-WEST SOUTH-WEST RAMP	Rural	0.267	1300	6	1208	86	6	31	7	1	4	34	1	1	0	0
20	WEST LINE OF BUCHANAN COUNTY	Rural	4.973	11000	49	9114	1837	65	317	70	7	132	1139	46	63	54703	9135
	ROUTE SUMMARY - RURAL		11.227	10438												115964	22564
	ROUTE SUMMARY - MUNICIPAL		14.757	15561												214823	33730