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The street will be widened between Alexander Street and Kinnaman Road to add a center turn lane and other improvements.

COURTESY PHOTO: WASHINGTON COUNTY - Here's what the design renderings look like for the northern end of the road construction project on 209th Avenue. A new center turn lane will be added, as well as other general improvements. Construction along Southwest 209th Avenue begins on June 1, according to an announcement by Washington County.

The project will widen the street between Southwest Alexander Street and Kinnaman Road by adding a continuous center turn lane to go along with two travel lanes in each direction. The road will taper back to two lanes at Alexander Street.

The project will also add bike lanes both ways and includes upgrades to lights and signals along intersections, as well as improvements to the railroad crossing at Oregon Highway 8, signed locally as Southwest Tualatin Valley Highway.

The northern intersection of 209th Avenue and TV Highway will be closed for about 30 days, according to the county. Traffic will detour to Cornelius Pass Road and 198th Avenue. A pedestrian path will remain open through the area.

The southern closure area will last longer — about 120 days, according to county officials. It will close 209th Avenue between TV Highway and Industrial Way, with traffic detoured to Southeast Cornelius Pass Road and Blanton Street.

The northern closure is scheduled to begin in April 2023, with the northern portion of the road being constructed for a year. The southern closure and railroad improvements are scheduled to begin in April 2024.

County officials said they've chosen those closure dates to have the least impact on closures that are already scheduled as part of ongoing construction on Cornelius Pass Road.

The construction area is just east of the new South Hillsboro development, making this a key infrastructure project for building out traffic conditions in that fast-growing part of Washington County.


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