+40.18476, -95.33139
40°11'05" N, 95°19'53" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:IS 29 N over LIT TARKIO CR
Structure number:1602
Old structure number:A1909 3 (from 1992 edition)
Location:S 17 T 62 N R 39 W
Purpose:Carries highway over waterway
Route classification:Principal Arterial - Interstate (Rural) [01]
Length of largest span:138.1 ft. [42.1 m]
Total length:356.0 ft. [108.5 m]
Roadway width between curbs:39.4 ft. [12.0 m]
Deck width edge-to-edge:42.3 ft. [12.9 m]
Skew angle:45°
Owner:State Highway Agency [01]
Year built:1972
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:MS 18+Mod / HS 20+Mod [6]
Number of main spans:3
Main spans material:Steel continuous [4]
Main spans design:Stringer/Multi-beam or girder [02]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Bituminous [6]

Latest Available Inspection: March 2017

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:7,475 [as of 2016]
Truck traffic:35% of total traffic
Deck condition:Satisfactory [6 out of 9]
Superstructure condition:Good [7 out of 9]
Substructure condition:Good [7 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: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 the assessed or calculated scour condition. [8]
Sufficiency rating:92.5

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
March 2017FairSatisfactoryGoodGood747592.5
March 2015FairFairGoodGood681091.5
March 2013FairFairVery GoodGood550891.6
November 2011FairFairVery GoodGood550891.6
December 2009FairFairVery GoodGood649591.4
December 2008FairSatisfactoryVery GoodGood649592.4
January 2007FairSatisfactoryVery GoodGood644792.4
October 2004FairSatisfactoryVery GoodGood631892.4
January 2003FairSatisfactoryVery GoodGood601795.6
October 2001FairSatisfactoryVery GoodGood570795.6
November 1999FairSatisfactoryVery GoodGood552295.5
November 1998FairSatisfactoryVery GoodGood552295.5
November 1997FairSatisfactoryVery GoodGood552295.5
December 1996FairSatisfactoryVery GoodGood526995.5
December 1995FairSatisfactorySatisfactoryGood526997.6
December 1994FairSatisfactorySatisfactoryGood518697.6
October 1993FairSatisfactorySatisfactoryGood491597.6
October 1992FairSatisfactorySatisfactoryGood491597.6
January 1992FairSatisfactorySatisfactoryGood471797.6

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
Steel Girder/Beamlinear ft.1,78001,78000
Steel Protective Coatingsq. ft.28,583028,1284550
Reinforced Concrete Decksq. ft.15,0607,6634,5172,8800
Wearing Surfacessq. ft.14,06214,062000
Reinforced Concrete Columneach66000
Reinforced Concrete Abutmentlinear ft.184094900
Concrete Protective Coatingsq. ft.2900732170
Reinforced Concrete Pier Caplinear ft.112112000
Strip Seal Jointlinear ft.110110000
Movable Bearingeach1541100
Steel Protective Coatingsq. ft.150555
Fixed Bearingeach55000
Steel Protective Coatingsq. ft.55000
Bridge Rail
Steel or Aluminum Bridge Raillinear ft.71265050120
Reinforced Concrete Bridge Raillinear ft.71261201000