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BROWNS BRIDGE RD over BIG HOLE RIVER 123

Map

Coordinates:
+45.54731, -112.69344
45°32'50" N, 112°41'36" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:BROWNS BRIDGE RD over BIG HOLE RIVER 123
Structure number:L01320003+01001
Location:6.2M S MELROSE
Purpose:Carries highway over waterway
Route classification:Local (Rural) [09]
Length of largest span:174.9 ft. [53.3 m]
Total length:174.9 ft. [53.3 m]
Roadway width between curbs:17.1 ft. [5.2 m]
Deck width edge-to-edge:17.4 ft. [5.3 m]
Vertical clearance above deck:17.4 ft. [5.3 m]
Owner:County Highway Agency [02]
Year built:1915
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Main span material:Steel [3]
Main span design:Truss - Thru [10]
Deck type:Wood or Timber [8]
Wearing surface:Wood or Timber [7]

Latest Available Inspection: July 2018

Good/Fair/Poor Condition:Poor
Status:Open, no restriction [A]
Average daily traffic:100 [as of 2008]
Deck condition:Satisfactory [6 out of 9]
Superstructure condition:Poor [4 out of 9]
Substructure condition:Poor [4 out of 9]
Structural appraisal:Meets minimum tolerable limits to be left in place as is [4]
Deck geometry appraisal:Basically intolerable requiring high priority of corrrective action [3]
Water adequacy appraisal:Equal to present desirable criteria [8]
Roadway alignment appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Channel protection:Bank and embankment protection is severely undermined. River control devices have severe damage. Large deposits of debris are in the channel. [4]
Scour condition:Bridge is scour critical; field review indicates that extensive scour has occurred at bridge foundations. [2]
Sufficiency rating:37.3
Recommended work:Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Estimated cost of work:$273,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
July 2018PoorSatisfactoryPoorPoor10037.3
November 2016PoorGoodPoorPoor10037.3
November 2014PoorGoodPoorFair10037.3
January 2013FairGoodSatisfactoryFair10042.5
January 2011FairGoodSatisfactorySatisfactory10058.9
January 2009FairGoodSatisfactorySatisfactory10058.9

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
ElementUnitsQuantity1-Good2-Fair3-Poor4-Serious
Superstructure
Steel Stringerlinear ft.1,2241,224000
Steel Protective Coatingsq. ft.2,9622,962000
Steel Trusslinear ft.351351000
Steel Protective Coatingsq. ft.2,6002,600000
Steel Floor Beamlinear ft.157157000
Steel Protective Coatingsq. ft.853853000
Steel Gusset Plateeach6868000
Steel Protective Coatingsq. ft.680680000
Substructure
Reinforced Concrete Abutmentlinear ft.7272000
Deck
Timber Decksq. ft.3,0573,057000
Wearing Surfacessq. ft.2,1002,100000
Bearings
Movable Bearingeach22000
Steel Protective Coatingsq. ft.22000
Fixed Bearingeach22000
Steel Protective Coatingsq. ft.22000
Bridge Rail
Steel or Aluminum Bridge Raillinear ft.351351000
Steel Protective Coatingsq. ft.740740000