Tonquin Road and 124th Avenue, the final pieces of the 124th Avenue Extension project, opened to travelers Dec. 31.
Minor clean up - including drainage work, curb repair, landscaping and survey marker installation - may require minor traffic disruptions between 9 a.m.-3 p.m. weekdays for the next few months.
The $30 million project included construction of 4.4 miles of new/improved roadway. This included:
- Construction of the new 0.7-mile Basalt Creek Parkway which connects SW Tonquin Road and SW 124th Avenue to Grahams Ferry Road.
- Construction of the 1.7-mile-extension of 124th Avenue, connecting Tonquin Road and Basalt Creek Parkway to Tualatin-Sherwood Road. This included a partnership with Willamette Water Supply Program for installation of a portion of its 30-mile-long earthquake-resilient water transmission pipeline.
- Right-turn lanes from Tualatin-Sherwood Road onto 124th Avenue.
- Widening of Tonquin Road to three lanes between Basalt Creek Parkway and Grahams Ferry Road.
- Widening of Grahams Ferry Road to three lanes between Day and Tonquin roads.
- Improvements to the Grahams Ferry and Tonquin roads intersection.
The 124th Avenue Extension project was designed to provide another route connecting Tualatin and Wilsonville, allowing access to land designated for future industrial and employment development in the cities of Tualatin, Sherwood and Wilsonville, including the Basalt Creek area.
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