Share:

OVANDO HELMVILLE R over BIG BLACKFOOT RIVER 006

Map

Coordinates:
+46.89670, -113.06072
46°53'48" N, 113°03'39" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:OVANDO HELMVILLE R over BIG BLACKFOOT RIVER 006
Structure number:L39001011+04001
Location:6M N HELMVILLE
Purpose:Carries highway over waterway
Route classification:Local (Rural) [09]
Length of largest span:101.1 ft. [30.8 m]
Total length:189.0 ft. [57.6 m]
Roadway width between curbs:20.0 ft. [6.1 m]
Deck width edge-to-edge:21.7 ft. [6.6 m]
Owner:County Highway Agency [02]
Year built:1931
Year reconstructed:1953
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:MS 13.5 / HS 15 [3]
Main span material:Steel [3]
Main span design:Truss - Thru [10]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Monolithic Concrete (concurrently placed with structural deck) [1]

Latest Available Inspection: April 2018

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:20 [as of 2017]
Deck condition:Satisfactory [6 out of 9]
Superstructure condition:Satisfactory [6 out of 9]
Substructure condition:Satisfactory [6 out of 9]
Structural appraisal:Meets minimum tolerable limits to be left in place as is [4]
Deck geometry appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Water adequacy appraisal:Equal to present desirable criteria [8]
Roadway alignment appraisal:Better than present minimum criteria [7]
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 determined to be stable for assessed or calculated scour condition. [5]
Sufficiency rating:67.2

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
April 2018FairSatisfactorySatisfactorySatisfactory2067.2
April 2016FairSatisfactorySatisfactorySatisfactory2067.2
April 2014FairGoodSatisfactoryGood10069.0
April 2012FairGoodSatisfactoryGood10068.0
April 2010FairGoodSatisfactoryGood10068.0
April 2008GoodGoodGoodGood10068.0
March 2006GoodGoodGoodGood10068.0
August 2004GoodGoodGoodGood10068.0
April 2002GoodGoodVery GoodVery Good10068.0
January 2000GoodGoodVery GoodVery Good10068.0
April 1998GoodGoodVery GoodVery Good10068.0
June 1995GoodGoodVery GoodVery Good3166.9
October 1992GoodGoodVery GoodVery Good3182.4
September 1990GoodGoodGoodVery Good9684.4

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
ElementUnitsQuantity1-Good2-Fair3-Poor4-Serious
Superstructure
Reinforced Concrete Girder/Beamlinear ft.262262000
Steel Stringerlinear ft.50920430500
Steel Protective Coatingsq. ft.2,0361,873416161
Deck
Reinforced Concrete Decksq. ft.2,2021,0631,119200
Superstructure
Steel Trusslinear ft.203020300
Steel Protective Coatingsq. ft.4,23302,539847847
Steel Floor Beamlinear ft.1743513900
Steel Protective Coatingsq. ft.1,196777120120179
Deck
Reinforced Concrete Top Flangesq. ft.1,91895995900
Superstructure
Steel Gusset Plateeach2602600
Steel Protective Coatingsq. ft.364200733655
Substructure
Reinforced Concrete Columneach40400
Reinforced Concrete Abutmentlinear ft.5656000
Reinforced Concrete Pier Caplinear ft.43261700
Joints
Open Jointlinear ft.2002000
Assembly without Seal Jointlinear ft.2002000
Bearings
Movable Bearingeach20020
Steel Protective Coatingsq. ft.20011
Fixed Bearingeach20200
Steel Protective Coatingsq. ft.20011
Bridge Rail
Steel or Aluminum Bridge Raillinear ft.380038000
Steel Protective Coatingsq. ft.1,5870794476317