+47.83844, -117.85264
47°50'18" N, 117°51'10" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:SR 231 over SPOKANE RIVER
Structure number:0003558A0000000
Location:13.6 N JCT US 2
Purpose:Carries highway and pedestrian walkway over waterway
Route classification:Major Collector (Rural) [07]
Length of largest span:200.1 ft. [61.0 m]
Total length:485.9 ft. [148.1 m]
Roadway width between curbs:24.0 ft. [7.3 m]
Deck width edge-to-edge:31.2 ft. [9.5 m]
Owner:State Highway Agency [01]
Year built:1949
Historic significance:Bridge is on the National Register of Historic Places [1]
Design load:M 13.5 / H 15 [2]
Main span material:Concrete [1]
Main span design:Arch - Deck [11]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Monolithic Concrete (concurrently placed with structural deck) [1]

Latest Available Inspection: October 2018

Good/Fair/Poor Condition:Good
Status:Open, no restriction [A]
Average daily traffic:1,208 [as of 2016]
Truck traffic:16% of total traffic
Deck condition:Good [7 out of 9]
Superstructure condition:Good [7 out of 9]
Substructure condition:Good [7 out of 9]
Structural appraisal:Basically intolerable requiring high priority of corrrective action [3]
Deck geometry appraisal:Meets minimum tolerable limits to be left in place as is [4]
Water adequacy appraisal:Equal to present desirable criteria [8]
Roadway alignment appraisal:Equal to present minimum criteria [6]
Channel protection:Banks are protected or well vegetated. River control devices such as spur dikes and embankment protection are not required or are in a stable condition. [8]
Scour condition:Bridge foundations (including piles) on dry land well above flood water elevations. [9]
Sufficiency rating:34.7
Recommended work:Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Estimated cost of work:$5,443,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
October 2018GoodGoodGoodGood120834.7
October 2016GoodGoodGoodGood113245.0
October 2014GoodGoodGoodGood113244.8
October 2012FairGoodSatisfactoryGood116744.8
October 2010FairGoodSatisfactoryGood94944.8
August 2008FairGoodSatisfactoryGood94944.8
September 2006PoorPoorSatisfactoryGood72348.5
October 2004PoorPoorSatisfactoryGood72348.5
October 2002PoorPoorGoodGood72346.0
June 2000PoorSeriousGoodGood64044.0
September 1998PoorSeriousGoodGood64044.0
March 1996PoorSeriousGoodGood64044.8
June 1994PoorSeriousGoodGood64044.8
October 1992FairSatisfactoryGoodGood45054.1
April 1990FairSatisfactoryGoodGood39055.9