Southwest Washington Regional Transportation Council

NE 99th 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.

Aerial Map

 

North Leg Traffic Counts (Hwy. 99)

Year NB ADT SB ADT ADT NB PM SB PM NB AM SB AM
20217066745214518639582344447
20197475758715063699639118229
20180000000
20177876761115487713632283374
20158364848716851711667231356
20120000000
20107872825216124766681260393
20068304790416208807645339437
20038641836317004877685216364
20028815807816893870660289426
19998669735016020820504262162
19978246738615632822487310414
19969724895318679902711332451
199200179940000
19918791719515986872527340472
1990932552871461189338800
1987859078971648784360700

South Leg Traffic Counts (Hwy. 99)

Year NB ADT SB ADT ADT NB PM SB PM NB AM SB AM
20218993803417028883628394438
20190000000
20188889818717077813684273312
20170000000
20150000000
20120000000
20109236863717873870691229245
20069049831117360875691239364
20031172610268219941145769286420
20021114210307214491133840322496
19999536950619042974686262383
1997106268164187901029644313373
19961225811137233951210840369680
199200187580000
1991791410411183261036734138804
199000210830000
198710163990320066112077000

East Leg Traffic Counts (NE 99th St.)

Year EB ADT WB ADT ADT EB PM WB PM EB AM WB AM
20217653715814811733516350539
20190000000
20180000000
20177234728214516675559302517
20158223784716070803496294528
20127154676513919778517246552
20107510674614256789501216516
20067048669913746844573296508
20037775689314668776522247505
20026904638013284772541258487
19996518587812395816448215446
19975231501810250535377165349
1996455143178868431363409290
1992446140908551429296547162
19910071980000
199047454560930468719700
198725433133567634728700

West Leg Traffic Counts (NE 99th St.)

Year EB ADT WB ADT ADT EB PM WB PM EB AM WB AM
2021120201298825008971952615775
201913697141422784013101179594762
20180000000
20171137012163235331054949546718
201513180146502783011361076482732
20120000000
20101193612799247351084987425825
200612623124582508110641260718584
200313693142912798512441217493678
200211316131192443510181110504772
199911600130772467711611095488769
199793981081120209819946402554
19967175762714801553785400339
19928965745216417687654558203
199100142400000
199000165980000
1987728970031429262373300