Woodland moves forward with plan for improved traffic signals at Exit 21 - The Columbian
LONGVIEW — The Woodland City Council Monday voted to move forward with a design improving traffic signals to reduce congestion at the junction of Exit 21 and Interstate 5.
The interchange at the south end of the city handles traffic entering and exiting I-5 at state Highway 503. Traffic often backs up at the Exit 21 offramp and Highway 503 and Lewis River Road are heavily congested, especially during the weekday rush hour, according to project documents.
A study by engineering consultant Kittelson and Associates earlier this year proposed two types of designs: reconfiguring the traffic lights and intersections or building three new roundabouts.
Both concepts improve traffic flow, particularly for the Exit 21 northbound offramp, according to the study. The designs also have the same estimated price tag of about $13 million to $15 million.
The Washington State Department of Transportation typically prefers roundabouts because they have lower maintenance costs, said Tracy Coleman, city public works director.
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