Southwest Washington Regional Transportation Council

NW 99th St. / Lakeshore/NW 31st 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 (Lakeshore/NW 31st Av.)

Year NB ADT SB ADT ADT NB PM SB PM NB AM SB AM
20175961583611797661421201675
2012499549669962631354194618
20115357519310551637370181586
20075797559011386724421224689
2003463353419974599391195575
2002461343538965585310181528
20010000000
1999399740058002503287157511
1998407740858162500281173481
1996377537147489467232119434
1992331333256638375212107404
199030213047606739921679381
19880067140000
19850063210000
19840050900000
19830050900000

South Leg Traffic Counts (Lakeshore/NW 31st Av.)

Year NB ADT SB ADT ADT NB PM SB PM NB AM SB AM
20170000000
20120000000
2011427442608534547287132517
2007408941038192548271151620
2003386037957655591198134542
2002371235747285522249127542
200103473001950552
1999321732326449446199123468
1998325833026560457212136448
1996354435447088467201124484
199230533108616238515690427
199028322961579341219375409
19880062220000
19850054620000
19840048140000
19830000000

East Leg Traffic Counts (NW 99th St.)

Year EB ADT WB ADT ADT EB PM WB PM EB AM WB AM
2017233425654899200215166183
2012185119453796175207138124
20111432151029421451398878
2007271729565673271299192199
2003239924524851227231158167
2002245425755028244264162203
20010000000
1999146824223890142236112176
1998176423464110177210119158
1996207114763547186147064
19921768173034989184075
19901597170132981741730116
19880032190000
19850042260000
19840000000
19830000000

West Leg Traffic Counts (NW 99th St.)

Year EB ADT WB ADT ADT EB PM WB PM EB AM WB AM
20170000000
20120000000
20110000000
20070000000
2003108113222111787
20020000000
20010000000
1999001700000
19980000000
19960000000
19920000000
1990252120371322400
19880000000
19850000000
19840000000
19830000000