US 101 - 0.8 Miles N of Astoria-Megler Br. - Emergency Culvert Replacement

Project news

  • On Friday, March 26 crews reopened both directions of US 101 at milepost 1.2, just north of the Astoria-Megler Bridge, following emergency culvert replacement work. Travelers should expect daytime delays with single lane closures Monday, March 29 through Friday, April 2, whiles crews install roadway markings and perform site restoration work.
  • Sign up to receive project and construction updates.
  • Check real-time travel conditions via our mobile app.

Needs & benefits

On Tuesday, Feb. 16, due to heavy seasonal rainstorms and harsh winter weather, the existing culvert drainage system that runs underneath a portion of US 101 at milepost 1.2, just north of the Astoria-Megler Bridge, began to fail, causing a portion of the road to give way and sink.

WSDOT maintenance crews assessed the situation and determined that the concrete culvert is failing in two locations on each shoulder of the roadway. To address the immediate safety concerns, crews closed the northbound lane of the highway, and installed steel plates over the southbound lane where the culvert is located. This temporary solution ensures the traveling public can safely move through the area until long-term repairs can be made.  

In spring 2021, contractor crews working for the Washington State Department of Transportation, will begin work to replace the aging and failing 18-inch concrete culvert pipe with a larger 24-inch plastic culvert pipe. Installing a new larger culvert pipe will improve the drainage system in this area for years to come.   

Running along the Pacific Ocean coastline, the historic US 101 highway connects California, Oregon and enters Washington state, where is spans a total of 365 miles, along the west coast. Keeping this historic highway safe for travel ensures the connection between all three west coast states, remains intact.  

  • Safety: Replacing the aging and failing culvert pipe with a larger culvert pipe that meets WSDOT standards, improves drainage and ensures travelers have reliable, safe travel route. 
  • Preservation: This culvert replacement project extends the life of the highway by removing excess storm water from the roadway surface, which reduces erosion.   
  • Cost: Replacing the existing failing culvert reduces the need for costly emergency maintenance repairs and unexpected closures of the highway.


  • Feb. 16: WSDOT closed the northbound lane of US 101 at milepost 1.2, and installed temporary steel plates over the southbound lanes and a temporary traffic signal 
  • March 3: Emergency Contract was signed 
  • March 8: Construction is scheduled to begin 
  • March 26: Crews reopened both lanes of US 101 to traffic
  • Spring 2021: Construction is complete 


Financial Data for PIN 410121C
Funding Source Amount ($ in thousands)
2003 Gas Tax (Nickel Funding) $0
2005 Gas Tax (TPA) $0
Pre-Existing Funds (PEF) $800
CWA $0
Total $800


Joanna Lowrey
WSDOT Project Engineer
(360) 442-1350

Celeste Dimichina 
WSDOT Communications 
(360) 905-2057 

US 101 - 0.8 miles North of Astoria-Megler Bridge - Emergency Culvert Replacement project location in Pacific County, WA