Iowa DOT

Volume of Traffic on the Primary Road System

Route	2013	Rural/Municipal	Section length (miles)	Annual average daily traffic	Vehicle classification distribution of annual average daily traffic											Average daily vehicle miles
	2013				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	390	8	0	1	0	0	1	6	0	0	114	2
20	NORTH-EAST SOUTH-EAST RAMP	Rural	0.269	370	2	356	12	0	1	0	0	1	8	0	0	100	3
20	WEST LIMITS OF CEDAR FALLS	Rural	2.981	13600	66	11151	2383	72	323	78	8	190	1586	55	71	40542	7104
20	IA 58 INTERCHANGE	Municipal	0.523	13600	66	11151	2383	72	323	78	8	190	1586	55	71	7113	1246
20	EAST-NORTH EAST-SOUTH RAMP	Municipal	0.298	2560	14	2291	255	20	89	22	2	12	102	4	5	763	76
20	SOUTH-EAST RAMP	Municipal	0.298	300	1	205	94	12	56	13	1	1	9	0	0	89	28
20	WEST-NORTH WEST-SOUTH RAMP	Municipal	0.360	850	5	800	45	2	9	2	0	3	27	1	1	306	16
20	NORTH-WEST SOUTH-WEST RAMP	Municipal	0.261	840	5	791	44	2	9	2	0	3	26	1	1	219	11
20	NORTH-EAST LOOP	Municipal	0.261	1840	10	1685	145	12	54	13	1	6	53	2	2	480	38
20	IA 27 INTERCHANGE AT EAST LIMITS OF CEDAR FALLS &
20	WEST LIMITS OF HUDSON	Municipal	1.091	16600	81	13730	2788	113	505	122	13	204	1697	59	76	18111	3042
20	EAST-NORTH EAST-SOUTH RAMP	Municipal	0.283	6600	37	6167	396	28	127	31	3	21	173	6	7	1868	112
20	NORTH-EAST SOUTH-EAST RAMP	Municipal	0.218	6100	34	5655	411	25	113	27	3	24	202	7	10	1330	90
20	WEST-NORTH WEST-SOUTH RAMP	Municipal	0.265	1430	7	1233	189	8	36	9	1	14	113	4	5	379	50
20	NORTH-WEST SOUTH-WEST RAMP	Municipal	0.242	1510	8	1320	182	6	28	7	1	14	118	4	5	365	44
20	EAST LIMITS HUDSON &
20	WEST LIMITS WATERLOO	Municipal	0.385	26300	136	22940	3224	152	681	164	17	221	1842	64	83	10126	1241
20	US 63 INTERCHANGE	Municipal	1.675	26300	136	22940	3224	152	681	164	17	221	1842	64	83	44053	5400
20	EAST-NORTH EAST-SOUTH RAMP	Municipal	0.366	2860	13	2259	587	27	119	29	3	41	342	12	16	1047	215
20	NORTH-EAST SOUTH-EAST RAMP	Municipal	0.360	2580	12	1965	603	29	129	31	3	41	343	12	16	929	217
20	NORTH-WEST SOUTH-WEST LOOP	Municipal	0.218	1070	6	1007	57	4	18	4	0	3	25	1	1	233	12
20	WEST-NORTH WEST-SOUTH LOOP	Municipal	0.500	1270	7	1216	47	3	15	4	0	2	20	1	1	635	24
20	ANSBOROUGH AVENUE INTERCHANGE	Municipal	1.532	29400	113	24978	4310	103	995	198	38	371	2115	206	283	45041	6603
20	NORTH-EAST SOUTH-EAST RAMP	Municipal	0.258	1160	5	1110	45	1	10	2	0	4	23	2	3	299	12
20	WEST-NORTH WEST-SOUTH RAMP	Municipal	0.264	2800	12	2745	42	2	19	4	1	2	12	1	1	739	11
20	NORTH-WEST SOUTH-WEST RAMP	Municipal	0.249	2580	11	2514	55	3	26	5	1	2	14	1	1	642	14
20	EAST-NORTH EAST-SOUTH RAMP	Municipal	0.316	1170	5	1148	17	1	7	1	0	1	6	1	1	370	5
20	IA 21 INTERCHANGE	Municipal	1.508	26300	99	21926	4275	100	967	192	37	371	2117	206	283	39660	6447
20	EAST-NORTH EAST-SOUTH RAMP	Municipal	0.342	2300	10	2152	139	5	52	10	2	9	49	5	7	787	48
20	NORTH-EAST SOUTH-EAST RAMP	Municipal	0.280	2670	11	2504	154	5	49	10	2	11	63	6	8	748	43
20	WEST-NORTH WEST-SOUTH RAMP	Municipal	0.342	3650	16	3456	178	6	60	12	2	12	70	7	9	1248	61
20	NORTH-WEST SOUTH-WEST RAMP	Municipal	0.280	3680	16	3481	183	8	77	15	3	10	57	6	8	1030	51
20	I 380 & US 218 WEST INTERCHANGE	Municipal	1.782	24000	89	19704	4207	96	931	185	36	369	2103	205	282	42768	7497
20	DUPLICATE ROUTE WITH I 380 I 380 EAST INTERCHANGE TO
20	CO RD V51 INTERCHANGE	Rural	1.513	11000	55	9198	1748	73	326	79	8	126	1052	36	47	16643	2645
20	EAST-NORTH EAST-SOUTH RAMP	Rural	0.280	450	2	336	112	2	11	3	0	10	80	3	4	126	31
20	NORTH-EAST SOUTH-EAST RAMP	Rural	0.280	350	2	262	86	2	7	2	0	8	63	2	2	98	24
20	WEST-NORTH WEST-SOUTH RAMP	Rural	0.379	720	4	654	62	4	19	5	0	3	28	1	1	273	23
20	NORTH-WEST SOUTH-WEST RAMP	Rural	0.267	1110	6	984	121	11	50	12	1	5	38	1	1	296	32
20	WEST LINE OF BUCHANAN COUNTY	Rural	4.973	10000	49	8188	1763	61	275	66	7	136	1129	39	51	49730	8767
	ROUTE SUMMARY - RURAL		11.227	9613												107922	18631
	ROUTE SUMMARY - MUNICIPAL		14.757	15002												221378	32654