Generalized diagram of this intersection's form.

NE 78th St. / Hwy. 99

Use the tabs below to select various information provided for this intersection. The first tab offers a map of the intersection location, and a means of locating nearby count locations. Data for each intersection is offered by “leg” which is, at times, not entirely intuitive. Waving your mouse over the names above should clear up any ambiguities. Directional Average Weekday (24 hour average), AM Peak Hour (7-8 a.m.), PM Peak Hour (peak hour between 4-6 p.m.), and PM Peak Turn Movement (right, left, and through), are included in the summary. The final tab provides scanned PDF documents (where available) of the original count data for this intersection.

Location
North Leg
South Leg
East Leg
West Leg
Scans

Aerial Map

North Leg Traffic Counts (Hwy. 99)

Year	NB ADT	SB ADT	ADT	NB PM	SB PM	NB AM	SB AM
2021	0	0	0	0	0	0	0
2017	0	0	0	0	0	0	0
2016	9485	10677	20162	826	909	457	517
2012	10486	10024	20510	965	902	295	321
2008	9382	9924	19306	925	920	264	375
2006	10001	9472	19473	910	814	331	356
2002	11896	10551	22447	1038	863	341	369
2001	11247	11305	22552	998	905	293	468
1999	9822	9838	19661	982	791	268	441
1997	9769	9996	19766	897	811	259	408
1996	12775	11961	24735	1230	0	401	0
1993	13886	13078	26964	1281	885	378	791
1991	0	0	20601	0	0	0	0
1990	12152	11531	23683	0	0	0	0
1988	12416	13084	25500	0	0	0	0
1985	0	0	0	0	0	0	0
1983	11026	11230	22256	1092	846	0	0

South Leg Traffic Counts (Hwy. 99)

Year	NB ADT	SB ADT	ADT	NB PM	SB PM	NB AM	SB AM
2021	9668	9189	18857	833	719	502	551
2017	0	0	0	0	0	0	0
2016	10656	11710	22366	986	914	529	738
2012	10687	11739	22426	993	962	291	524
2008	10574	11399	21974	1074	993	310	548
2006	10655	9199	19854	990	741	320	493
2002	11593	0	0	806	0	257	0
2001	13211	15638	28849	1285	1228	347	834
1999	12814	10437	23251	1204	840	337	433
1997	12578	11515	24092	1116	885	312	475
1996	12991	11688	24680	1252	915	363	555
1993	14747	11981	26728	1281	842	295	571
1991	12072	8759	20831	1250	669	276	434
1990	10418	10396	20814	1031	977	0	0
1988	11570	10770	22340	0	0	0	0
1985	0	9700	0	0	810	0	0
1983	17709	10024	27733	2116	806	0	0

East Leg Traffic Counts (NE 78th St.)

Year	EB ADT	WB ADT	ADT	EB PM	WB PM	EB AM	WB AM
2021	7317	7817	15135	569	503	414	490
2017	12535	11965	24500	1071	877	676	628
2016	13471	12553	26024	1234	1067	825	827
2012	12120	13015	25135	958	1202	578	583
2008	11765	11561	23325	1127	1011	566	616
2006	12963	12226	25189	1215	1029	708	628
2002	10230	9220	19450	818	787	463	374
2001	12412	10574	22986	1124	863	539	413
1999	11996	10881	22877	836	856	667	505
1997	10047	9582	19628	870	800	467	450
1996	9615	6480	16095	773	771	708	515
1993	11955	7695	19651	1016	607	0	366
1991	9782	8785	18567	904	680	0	544
1990	9764	8991	18756	960	540	0	0
1988	8979	11054	20033	0	0	0	0
1985	8245	8780	17025	780	680	0	0
1983	9991	10244	20235	869	747	0	0

West Leg Traffic Counts (NE 78th St.)

Year	EB ADT	WB ADT	ADT	EB PM	WB PM	EB AM	WB AM
2021	10579	15423	26002	781	1216	719	877
2017	15152	16505	31657	1086	1377	840	717
2016	20209	17613	37823	1680	1546	1314	1027
2012	18642	18409	37051	1598	1537	908	754
2008	17138	16654	33791	1502	1510	866	763
2006	16601	16466	33067	1450	1400	955	702
2002	14821	14331	29152	1201	1179	692	526
2001	15353	13438	28792	1208	1142	767	470
1999	15696	14902	30598	1094	1228	877	586
1997	14167	13499	27666	1220	1172	652	537
1996	15911	15640	31550	1441	1296	692	855
1993	0	0	0	0	0	0	0
1991	0	0	24584	0	0	0	0
1990	13025	14631	27656	1323	1224	0	0
1988	11223	13038	24261	0	0	0	0
1985	0	0	0	0	0	0	0
1983	15352	7011	22363	1112	914	0	0