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N97 over NIOBRARA RIVER

Map

Coordinates:
+42.80738, -100.66636
42°48'27" N, 100°39'59" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:N97 over NIOBRARA RIVER
Structure number:S097 13367
Location:9SW VALENTINE
Purpose:Carries highway over waterway
Route classification:Major Collector (Rural) [07]
Length of largest span:100.1 ft. [30.5 m]
Total length:203.1 ft. [61.9 m]
Roadway width between curbs:36.1 ft. [11.0 m]
Deck width edge-to-edge:38.4 ft. [11.7 m]
Owner:State Highway Agency [01]
Year built:1994
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:MS 22.5 / HS 25 [9]
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: March 2017

Good/Fair/Poor Condition:Good
Status:Open, no restriction [A]
Average daily traffic:515 [as of 2012]
Truck traffic:10% of total traffic
Deck condition:Very Good [8 out of 9]
Superstructure condition:Very Good [8 out of 9]
Substructure condition:Very Good [8 out of 9]
Structural appraisal:Equal to present desirable criteria [8]
Deck geometry appraisal:Better than present minimum criteria [7]
Water adequacy appraisal:Superior to present desirable criteria [9]
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]
Pier/abutment protection:Navigation protection not required [1]
Scour condition:Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Sufficiency rating:80.0

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
March 2017GoodVery GoodVery GoodVery Good51580.0
March 2015GoodVery GoodVery GoodVery Good51580.0
March 2013GoodVery GoodVery GoodVery Good51597.3
March 2011GoodVery GoodExcellentVery Good39597.8
March 2009GoodVery GoodExcellentVery Good39597.8
March 2007GoodVery GoodExcellentVery Good35098.0
March 2005GoodVery GoodExcellentExcellent39097.8
July 2003GoodExcellentExcellentExcellent34598.0
February 2001GoodExcellentExcellentExcellent38097.9
June 1999GoodExcellentExcellentExcellent30098.2
July 1997GoodExcellentExcellentExcellent27098.3
July 1995GoodExcellentExcellentExcellent23098.5
December 1994GoodExcellentExcellentExcellent23098.5

Element Data

Source: National Bridge Elements dataset, 2018 edition. This feature is experimental.
ElementUnitsQuantity1-Good2-Fair3-Poor4-Serious
Superstructure
Prestressed Concrete Girder/Beamlinear ft.797797000
Deck
Reinforced Concrete Decksq. ft.7,7637,7511200
Substructure
Reinforced Concrete Pier Walllinear ft.8282000
Steel Abutmentlinear ft.7067300
Steel Protective Coatingsq. ft.280280000
Prestressed Concrete Pileeach1818000
Reinforced Concrete Pier Caplinear ft.3042911300
Bearings
Elastomeric Bearingeach2424000
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.405405000