4 votes

I-5 - Ebey Slough Bridge (Southbound)


Ebey Slough Bridge

Northern section from West

Photo taken by K. A. Erickson in April 2011


BH Photo #197244


Street View 


Steel stringer bridge over Ebey Slough BNSF RR WA 529 on Southbound I-5
Marysville, Snohomish County, Washington
Open to traffic
Built 1954; rehabilitated 1968
Steel stringer
Length of largest span: 124.0 ft.
Total length: 1,920.0 ft.
Deck width: 54.1 ft.
Also called
I-5 Bridge
Approximate latitude, longitude
+48.04667, -122.18167   (decimal degrees)
48°02'48" N, 122°10'54" W   (degrees°minutes'seconds")
Approximate UTM coordinates
10/560988/5321811 (zone/easting/northing)
Quadrangle map:
Average daily traffic (as of 2016)
Inventory number
BH 48610 (Bridgehunter.com ID)
Inspection report (as of September 2018)
Overall condition: Fair
Superstructure condition rating: Satisfactory (6 out of 9)
Substructure condition rating: Satisfactory (6 out of 9)
Deck condition rating: Satisfactory (6 out of 9)
Sufficiency rating: 60.4 (out of 100)
View more at BridgeReports.com

Update Log 

  • April 12, 2011: Added by K. A. Erickson


  • K. A. Erickson


Ebey Slough Bridge
Posted April 21, 2011, by Michael Goff (michael [dot] goff [at] odot [dot] state [dot] or [dot] us)


I am glad to see you adding these pre-WWII girder/stringer bridges in Washington State. I am currently working on collecting data and photos of these types of bridge in Oregon. While the Ebey Slough Bridge may not be the prettiest bridge in the world, it does deserve inclusion in the collection of our nationís historic bridges (in my opinion).

Keep up the solid work.

Ebey Slough Bridge
Posted April 19, 2011, by Nathan Holth (form3 [at] historicbridges [dot] org)

I think its a nice looking bridge. It would definitely qualify for HistoricBridges.org if I were to visit and photograph the bridge.

Ebey Slough Bridge
Posted April 19, 2011, by K. A. Erickson

A one star rating? Ok so let me explain something, this bridge does qualify for inclusion as it is 50 years or older, it does have a style of concrete railing that others have found interest in, and the concrete curved sections of span that someone here liked, and some steel girders that are present on another 1950s style bridge that was considered eligible for the NRHP, the Warren Avenue Bridge in Bremerton. This bridge was the second crossing of Ebey Slough on old US 99, the first being the currently doomed swing span to the east. It was constructed to add extra lanes on a bypass of Marysville and became part of the Interstate Highway System years later, hence the rehabilitation date which was mainly the southern portion for alignment purposes.