2 votes

Dennis L. Edwards Tunnel


Dennis L. Edwards Tunnel

West Portal

Photo taken by Michael Goff on October 19, 2009


BH Photo #147920


Street Views 


The Dennis L. Edwards Tunnel is a 772-foot long tunnel at the summit of the Oregon Coast Range on US Route 26. The tunnel was originally designed by the Oregon State Highway Department under the guidance of former state bridge engineer Glenn S. Paxson.

The tunnel originally named the Sunset Tunnel for its location on the Sunset Highway (US 26) has a tragic history. The tunnel had a partial failure on January 28, 1999 that killed Oregon Department of Transportation bridge maintenance supervisor Dennis L. Edwards. Edwards was killed when a portion of the tunnel collapsed onto him while conducting an inspection of the tunnel after heavy rains raised questions about the tunnels safety. In 2002 the tunnel was remained the Dennis L. Edwards Tunnel in honor of Edwards.


Tunnel on US 26
Washington County, Oregon
Open to traffic
Built in 1940
Total length: 772.0 ft.
Vertical clearance above deck: 14.0 ft.
Also called
Sunset Tunnel
Approximate latitude, longitude
+45.73069, -123.25210   (decimal degrees)
45°43'50" N, 123°15'08" W   (degrees°minutes'seconds")
Approximate UTM coordinates
10/480384/5064156 (zone/easting/northing)
Quadrangle map:
Average daily traffic (as of 1998)
Inventory numbers
OR 02552 (Oregon Dept. of Transportation structure number)
BH 30181 (Bridgehunter.com ID)
Inspection report (as of September 1998)
View more at BridgeReports.com


Built 1940 (1,082)
Built during 1940s (4,115)
Have street view (27,196)
Open (40,007)
Oregon (1,188)
Owned by state (16,133)
Total length 500-1000 feet (2,888)
Tunnel (1,326)
US 26 (19)
Washington County, Oregon (20)

Update Log 

  • September 7, 2010: New Street View added by Michael Goff
  • October 19, 2009: New photos from Michael Goff
  • September 2, 2008: Updated by Michael Goff



Dennis L. Edwards Tunnel
Posted October 22, 2017, by Luke
Dennis L. Edwards Tunnel
Posted October 22, 2017, by J.L.O. (Pwrstrok4u [at] yahoo [dot] com)

What was that building used for. I was curious when we drove by it. It's all boarded up now but it had to be built for something. Maybe a Toll booth??



Dennis L. Edwards Tunnel
Posted September 12, 2012, by Mike Goff (michael [dot] goff [at] hotmail [dot] com)

The tunnel has a clearance of 14-feet at the shoulder and 20-feet at the crown. The RV should have no problem at all.

The tunnel is on a major route to the Oregon coast and numerous RV/trucks travel through it weekly.

Dennis L. Edwards Tunnel
Posted September 11, 2012, by Matt Lohry


Your RV should have no problems. The minimum required height for a structure over a roadway in the U.S. is 15 feet. Clearances less than 15 feet are required by law to display low clearance signs, and there are no signs posted for this tunnel. Also, this is a US highway, so it would certainly have signage posted if clearances were an issue.

Dennis L. Edwards Tunnel
Posted September 11, 2012, by Sydney Horn (sydhorn [at] gmail [dot] con)

You left off the most important information about this tunnel.

What is the vertical clearance. I have a RV that is 13'4" tall. I would kinda like to know if it will fit.