1 vote

Grays River Covered Bridge 47-35-01


Grays River Covered Bridge

Photo taken by Michael Goff on October 2, 2009


BH Photo #147030


Two-span covered bridge over Grays River on Covered Bridge Road
Wahkiakum County, Washington
Open to traffic
Built 1905; reconstructed 1989
- Dulin Construction (Rehabilitation Contractor)
- Ferguson and Houston (Original Design Firm)
- Sargent Engineers (Rehabilitation Firm)
Constructed in 1905, the 148-foot Howe truss Grays River Covered Bridge was the first vehicular bridge to span the Grays River. The bridge facilitated transportation of dairy and lumber products from western Wahkiakum County to the community of Grays River, located about 1.5 miles to the west, and to marketing and shipping centers a Grays Bay on the Columbia River to the southwest. It is the oldest covered bridge in Washington State this is a functional part of a public highway system.
(HAER Grays River Covered Bridge)
Length of largest span: 73.2 ft.
Total length: 191.9 ft.
Deck width: 12.5 ft.
Vertical clearance above deck: 11.5 ft.
Posted to the National Register of Historic Places on November 23, 1971
Approximate latitude, longitude
+46.35464, -123.58092   (decimal degrees)
46°21'17" N, 123°34'51" W   (degrees°minutes'seconds")
Approximate UTM coordinates
10/455306/5133615 (zone/easting/northing)
Quadrangle map:
Grays River
Average daily traffic (as of 2014)
Inventory numbers
WGCB 47-35-01 (World Guide to Covered Bridges number)
NRHP 71000880 (National Register of Historic Places reference number)
BH 34577 (Bridgehunter.com ID)
Inspection report (as of November 2018)
Overall condition: Good
Superstructure condition rating: Good (7 out of 9)
Substructure condition rating: Good (7 out of 9)
Deck condition rating: Good (7 out of 9)
Sufficiency rating: 43 (out of 100)
View more at BridgeReports.com

Update Log 

  • April 14, 2018: New photos from Leslie R trick
  • April 7, 2018: New photos from Richard Doody
  • April 15, 2015: New photos from Mike Garland
  • October 5, 2009: New photos from Michael Goff



Grays River Covered Bridge 47-35-01
Posted April 18, 2015, by Will Truax (Bridgewright [at] gmail [dot] com)

The pier is not original, the truss is clearly intended to be a clearspan truss and would've been configured far differently had a pier been part of the original planning.

The HAER report suggests there was a pier em-placed by sometime in the 40's, though photo's suggest no truss terminus load paths were in place at mid-span until the most recent rehab.

It was also at some point underslung with the cable support system seen in some of the photos Though there is no suggestion as to when, or if such was perhaps driven by system replacements like the corrugated steel deck placed in the 50's, or if that decking supported a concrete or asphalt surface

I find it all rather puzzling in that this is not a particularly long span for a Howe, and it is a truss type easily tuned and conditioned.

Grays River Covered Bridge 47-35-01
Posted April 17, 2015, by Barry (bllauver [at] toad [dot] net)

Did this bridge have a center pier when it was first built? I can't make one out on the old plans. If not, when was the center pier first added?