+47.01112, -109.87224
47°00'40" N, 109°52'20" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:US 87 over JUDITH RIVER
Structure number:P00057058+02611
Location:1M N HOBSON
Purpose:Carries highway over waterway
Route classification:Principal Arterial - Other (Rural) [02]
Length of largest span:71.9 ft. [21.9 m]
Total length:208.0 ft. [63.4 m]
Roadway width between curbs:43.6 ft. [13.3 m]
Deck width edge-to-edge:45.9 ft. [14.0 m]
Owner:State Highway Agency [01]
Year built:1971
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:MS 18 / HS 20 [5]
Number of main spans:3
Main spans material:Prestressed concrete [5]
Main spans design:Stringer/Multi-beam or girder [02]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Monolithic Concrete (concurrently placed with structural deck) [1]

Latest Available Inspection: January 2017

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:2,250 [as of 2015]
Truck traffic:17% of total traffic
Deck condition:Satisfactory [6 out of 9]
Superstructure condition:Good [7 out of 9]
Substructure condition:Satisfactory [6 out of 9]
Structural appraisal:Equal to present minimum criteria [6]
Deck geometry appraisal:Equal to present minimum criteria [6]
Water adequacy appraisal:Equal to present desirable criteria [8]
Roadway alignment appraisal:Equal to present desirable criteria [8]
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:79.0

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
January 2017FairSatisfactoryGoodSatisfactory225079.0
January 2013GoodGoodGoodGood204080.0
January 2009GoodGoodGoodGood226080.0
January 2005GoodGoodGoodGood244080.0
November 2000GoodGoodGoodGood240080.0
December 1996GoodGoodGoodGood198079.0
March 1993GoodGoodGoodGood184080.0
April 1991GoodVery GoodVery GoodVery Good196480.0

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
Prestressed Concrete Girder/Beamlinear ft.1,4571,457000
Reinforced Concrete Decksq. ft.9,5694,7844,78500
Reinforced Concrete Columneach40400
Reinforced Concrete Abutmentlinear ft.112101740
Reinforced Concrete Pier Caplinear ft.92741800
Fixed Bearingeach2726100
Steel Protective Coatingsq. ft.2726010
Bridge Rail
Steel or Aluminum Bridge Raillinear ft.4173962100
Steel Protective Coatingsq. ft.6265950310