Share:

OLD US 91 over MISSOURI RIVER-RR 069

Map

Coordinates:
+47.16701, -111.83439
47°10'01" N, 111°50'04" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:OLD US 91 over MISSOURI RIVER-RR 069
Structure number:L07604006+04001
Location:11M S CASCADE
Purpose:Carries highway over railroad and waterway
Route classification:Major Collector (Rural) [07]
Length of largest span:199.5 ft. [60.8 m]
Total length:549.9 ft. [167.6 m]
Roadway width between curbs:19.7 ft. [6.0 m]
Deck width edge-to-edge:20.7 ft. [6.3 m]
Vertical clearance above deck:14.1 ft. [4.3 m]
Vertical clearance below bridge:23.0 ft. [7.0 m]
Owner:State Highway Agency [01]
Year built:1931
Historic significance:Bridge is on the National Register of Historic Places [1]
Design load:M 13.5 / H 15 [2]
Number of main spans:3
Main spans material:Steel [3]
Main spans design:Truss - Thru [10]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Monolithic Concrete (concurrently placed with structural deck) [1]

Latest Available Inspection: August 2018

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:255 [as of 2017]
Truck traffic:2% of total traffic
Deck condition:Fair [5 out of 9]
Superstructure condition:Fair [5 out of 9]
Substructure condition:Satisfactory [6 out of 9]
Structural appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Deck geometry appraisal:Basically intolerable requiring high priority of corrrective action [3]
Underclearances appraisal:Superior to present desirable criteria [9]
Water adequacy appraisal:Equal to present desirable criteria [8]
Roadway alignment appraisal:Equal to present minimum criteria [6]
Channel protection:Bank protection is in need of minor repairs. River control devices and embankment protection have a little minor damage. Banks and/or channel have minor amounts of drift. [7]
Scour condition:Bridge foundations determined to be stable for assessed or calculated scour condition. [5]
Sufficiency rating:47.3

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
August 2018FairFairFairSatisfactory25547.3
September 2016FairFairFairSatisfactory33047.2
September 2014FairFairFairSatisfactory10059.5
September 2012FairFairSatisfactorySatisfactory10069.5
September 2010FairFairSatisfactorySatisfactory10070.5
August 2008FairSatisfactorySatisfactorySatisfactory10071.5
August 2006FairSatisfactorySatisfactorySatisfactory10071.5
September 2004FairSatisfactorySatisfactoryGood10071.5
October 2002FairSatisfactorySatisfactoryGood10071.5
August 2000FairSatisfactorySatisfactoryGood10071.5
May 1998FairSatisfactorySatisfactoryGood10077.5
May 1996FairSatisfactorySatisfactoryGood10075.5
January 1994FairSatisfactorySatisfactoryGood25255.1
September 1992FairSatisfactorySatisfactoryGood25255.1
January 1991FairSatisfactorySatisfactoryGood3172.5

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
ElementUnitsQuantity1-Good2-Fair3-Poor4-Serious
Superstructure
Reinforced Concrete Girder/Beamlinear ft.7968830
Steel Stringerlinear ft.2,58002,3052750
Steel Protective Coatingsq. ft.13,00811,708260390650
Deck
Reinforced Concrete Decksq. ft.10,90408,7232,1810
Superstructure
Steel Trusslinear ft.1,047001,0470
Steel Protective Coatingsq. ft.7,7944,6777797791,559
Steel Floor Beamlinear ft.5460480660
Steel Protective Coatingsq. ft.4,7323,785237237473
Deck
Reinforced Concrete Top Flangesq. ft.5490534150
Superstructure
Steel Gusset Plateeach88038500
Steel Protective Coatingsq. ft.88529918
Substructure
Reinforced Concrete Columneach84310
Reinforced Concrete Pier Walllinear ft.2302300
Reinforced Concrete Abutmentlinear ft.5649700
Reinforced Concrete Pier Caplinear ft.725210100
Joints
Pourable Jointlinear ft.43210220
Assembly without Seal Jointlinear ft.4308350
Bearings
Movable Bearingeach90090
Steel Protective Coatingsq. ft.92115
Fixed Bearingeach60060
Steel Protective Coatingsq. ft.63111
Bridge Rail
Steel or Aluminum Bridge Raillinear ft.1,09901,081180
Steel Protective Coatingsq. ft.1,563468313313469