Southwest Washington Regional Transportation Council

NW 78th St. / NW 9th Av.

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.

Aerial Map

 

North Leg Traffic Counts (NW 9th Av.)

Year NB ADT SB ADT ADT NB PM SB PM NB AM SB AM
20190000000
2017280128735675258174271284
20150000000
2014292430215946396258155294
2007299230666057252366273146
2002287130705941321239162275
1996410046628762431276169423
19930076880000
1990413548178952500387166548
19850085450000
19830057300000

East Leg Traffic Counts (NW 78th St.)

Year EB ADT WB ADT ADT EB PM WB PM EB AM WB AM
20190000000
20170000000
20150000000
20148794907617870680950665453
20070000000
20027503779215295542814660379
19969531898018511545892805308
19938297772816024553786376288
1990479746589455445426358251
198500158570000
19834900463095300000

West Leg Traffic Counts (NW 78th St.)

Year EB ADT WB ADT ADT EB PM WB PM EB AM WB AM
20197254651913773653552427434
20170000000
20156909656613475579485321483
20147061702414086550628551427
20076305635412658498590497324
20025892538111272451541494267
19965812523611048416420459200
1993485742099066320403365179
19908271845416725976559345872
19853899241663150000
198300136810000