Southwest Washington Regional Transportation Council

NE 78th St. / St. Johns Rd.

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 (St. Johns Rd.)

Year NB ADT SB ADT ADT NB PM SB PM NB AM SB AM
20196265602012285621417353480
20170000000
20156674727813951634532308698
20126241689313134631498231633
20097835921417049853693228896
20085506643111937558438211594
20047185799015175774548273827
20007282768414967963506285900
19986971715714128812501230799
19967062755714619792506221802
19916080684212922749446237747
19906071662912700671528233693
1988546958071127663543400
198351935063102560000
198100103790000

South Leg Traffic Counts (St. Johns Rd.)

Year NB ADT SB ADT ADT NB PM SB PM NB AM SB AM
20197250714414394738531467710
20177768759315361859550382823
20157365710214467776560342734
20126324644812772641498291545
20097275747714753746646265676
20086687664113327657525301617
20048258867216930841575351820
200077848109158931045636320796
19987083743014513786545286756
19967554789515450811559258828
199100121990000
19906761700913771823549258766
198839295693962257241800
198338205000882060034000
19810095460000

East Leg Traffic Counts (NE 78th St.)

Year EB ADT WB ADT ADT EB PM WB PM EB AM WB AM
20191235710370227271044792967714
20170000000
20150000000
20121159711740233371094975724700
200916395167873318214541600995922
20080000000
20041310212441255431134931792812
20009269882318091852798634597
1998102749130194041006761588568
19968656883517491778705425641
19918638821516854732742417560
1990979200942000
1988806577251579070057300
1983514089001404074072000
198100156990000

West Leg Traffic Counts (NE 78th St.)

Year EB ADT WB ADT ADT EB PM WB PM EB AM WB AM
2019111731050221675910891820735
20171195411188231421060942816801
2015114821083222314980970740588
2012114971122322720931961785576
200911633119022353510581014665615
20089971965919630941787534565
2004119741195123925994923669715
20008572821716789737705492522
19988684825116936766646471495
19968593852117114751666413517
19918123793516058763630402513
1990872986601738878666100
1988770173371503870244600
1983759079601555085059000
198100170930000