Iowa DOT

Volume of Traffic on the Primary Road System

Route	2010	Rural/Municipal	Section length (miles)	Annual average daily traffic	Vehicle classification distribution of annual average daily traffic											Average daily vehicle miles
	2010				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	480	3	449	28	2	9	3	0	2	12	0	0	137	8
20	NORTH-EAST SOUTH-EAST RAMP	Rural	0.412	420	3	401	16	2	7	2	0	1	4	0	0	173	7
20	WEST LIMITS OF CEDAR FALLS	Rural	2.981	12800	67	10572	2161	60	263	73	8	228	1444	37	48	38157	6442
20	IA 58 INTERCHANGE	Municipal	0.523	12800	67	10582	2151	59	262	73	8	227	1437	37	47	6694	1125
20	EAST-NORTH EAST-NORTH RAMP	Municipal	0.378	2640	16	2473	152	5	23	6	1	15	96	2	2	998	57
20	SOUTH-EAST RAMP	Municipal	0.298	300	2	274	24	2	8	2	0	1	9	0	0	89	7
20	WEST-NORTH WEST-SOUTH RAMP	Municipal	0.360	870	5	810	55	3	14	4	0	4	28	1	1	313	20
20	NORTH-WEST SOUTH-WEST RAMP	Municipal	0.261	860	5	810	45	2	8	2	0	4	26	1	1	224	12
20	NORTH-EAST LOOP	Municipal	0.261	2200	13	2097	90	4	16	4	0	9	54	1	1	574	23
20	IA 27 INTERCHANGE AT EAST LIMITS OF CEDAR FALLS &
20	WEST LIMITS OF HUDSON	Municipal	1.091	16200	87	13797	2316	65	286	80	9	244	1542	40	51	17674	2527
20	EAST-NORTH EAST-SOUTH RAMP	Municipal	0.292	5800	34	5353	413	29	126	35	4	28	180	5	6	1694	121
20	NORTH-EAST SOUTH-EAST RAMP	Municipal	0.218	6200	36	5700	464	33	144	40	5	32	200	5	7	1352	101
20	WEST-NORTH WEST-SOUTH RAMP	Municipal	0.267	870	5	787	78	3	12	3	0	8	49	1	1	232	21
20	NORTH-WEST SOUTH-WEST RAMP	Municipal	0.242	1180	7	1052	121	5	23	6	1	11	71	2	2	286	29
20	EAST LIMITS HUDSON &
20	WEST LIMITS WATERLOO *	Municipal	0.385	26100	146	22961	2994	119	522	145	16	285	1801	47	60	10049	1153
20	US 63 INTERCHANGE *	Municipal	1.675	26100	146	22961	2994	119	522	145	16	285	1801	47	60	43718	5015
20	EAST-NORTH EAST-SOUTH RAMP	Municipal	0.366	2960	17	2684	259	17	75	21	2	19	118	3	4	1083	95
20	NORTH-EAST SOUTH-EAST RAMP	Municipal	0.360	3280	19	3021	239	14	62	17	2	19	118	3	4	1181	86
20	NORTH-WEST SOUTH-WEST LOOP	Municipal	0.218	1110	6	1002	101	6	25	7	1	8	51	1	1	242	22
20	WEST-NORTH WEST-SOUTH LOOP	Municipal	0.311	970	6	886	79	3	15	4	0	7	46	1	1	302	25
20	ANSBOROUGH AVENUE INTERCHANGE *	Municipal	1.532	30300	57	26932	3311	77	739	119	14	357	1633	145	227	46420	5072
20	NORTH-EAST SOUTH-EAST RAMP	Municipal	0.258	1370	3	1325	43	3	32	5	1	0	1	0	0	353	11
20	WEST-NORTH WEST-SOUTH RAMP	Municipal	0.264	2530	5	2457	68	5	47	8	1	1	5	0	0	668	18
20	NORTH-WEST SOUTH-WEST RAMP	Municipal	0.249	2310	5	2239	67	4	40	6	1	2	11	1	2	575	17
20	EAST-NORTH EAST-SOUTH RAMP	Municipal	0.316	1410	3	1368	40	3	25	4	0	1	6	0	0	446	13
20	IA 21 INTERCHANGE *	Municipal	1.508	28100	52	24787	3261	74	710	114	13	355	1624	144	226	42375	4918
20	EAST-NORTH EAST-SOUTH RAMP	Municipal	0.342	3130	6	3000	124	6	53	9	1	8	39	3	5	1070	42
20	NORTH-EAST SOUTH-EAST RAMP	Municipal	0.280	3080	6	3013	60	3	27	4	1	4	17	2	3	862	17
20	WEST-NORTH WEST-SOUTH RAMP	Municipal	0.342	4370	9	4228	133	7	64	10	1	8	35	3	5	1495	45
20	NORTH-WEST SOUTH-WEST RAMP	Municipal	0.280	4630	9	4479	141	7	62	10	1	9	42	4	6	1296	39
20	I 380 & US 218 WEST INTERCHANGE	Municipal	1.782	25400	47	22182	3171	70	664	107	12	351	1602	142	223	45263	5651
20	DUPLICATE ROUTE WITH I 380 I 380 EAST INTERCHANGE TO
20	CO RD V51 INTERCHANGE	Rural	1.511	12500	69	10884	1547	61	266	74	8	148	935	24	31	18888	2338
20	EAST-NORTH EAST-SOUTH RAMP	Rural	0.280	180	1	159	20	0	2	1	0	2	14	0	0	50	6
20	NORTH-EAST SOUTH-EAST RAMP	Rural	0.280	150	1	124	25	0	2	1	0	3	18	0	0	42	7
20	WEST-NORTH WEST-SOUTH RAMP	Rural	0.379	920	5	858	57	6	26	7	1	2	14	0	0	349	22
20	NORTH-WEST SOUTH-WEST RAMP	Rural	0.267	1000	6	931	64	5	21	6	1	4	25	1	1	267	17
20	WEST LINE OF BUCHANAN COUNTY	Rural	4.973	11000	60	9467	1473	51	223	62	7	147	929	24	30	54703	7325
	ROUTE SUMMARY - RURAL		11.368	9920												112766	16172
	ROUTE SUMMARY - MUNICIPAL		14.659	15521												227528	26282