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Prosser Sixth Street Bridge


Sixth Street Bridge

Photo taken by Richard Doody 1995


BH Photo #420004


Street View 


The original Sixth Street Bridge, a seven span wooden truss structure, was built in 1906 by F.W. Berndt and L.A. Heinz for $10,500. Most of the cost was covered by subscription of real estate developers, It survived flooding in November of that year when sand bagging kept the waters from lifting the structure off its piers.

McRae Brothers of Seattle began construction of the present Sixth Street bridge began in June 1930. The structure composed of five open spandrel concrete arches and six small approach spans is 677 feet in length and cost $85,153. Twelve concrete lampposts topped by ionic capitals line its railings. Governor Roland Hartley addressed a crowd of 3,000, including town founder Colonel William Prosserís widow and son, at the formal opening on May 6, 1931.


Concrete arch bridge over Yakima River on Sixth Street in Prosser
Prosser, Benton County, Washington
Open to traffic
Built 1930 - 31
Open Spandrel Arch
Length of largest span: 128.0 ft.
Total length: 676.9 ft.
Deck width: 24.0 ft.
Also called
Yakima River Bridge
Approximate latitude, longitude
+46.20972, -119.77667   (decimal degrees)
46°12'35" N, 119°46'36" W   (degrees°minutes'seconds")
Approximate UTM coordinates
11/285813/5121097 (zone/easting/northing)
Quadrangle map:
Average daily traffic (as of 2017)
Inventory number
BH 34145 (Bridgehunter.com ID)
Inspection report (as of August 2017)
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: 72.1 (out of 100)
View more at BridgeReports.com

Update Log 

  • April 20, 2018: Updated by Richard Doody: Added historical data to description
  • March 28, 2018: New photos from Richard Doody
  • December 16, 2016: New Street View added by Dana and Kay Klein