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N97 over NIOBRARA RIVER

Map

Coordinates:
+42.80735, -100.67272
42°48'26" N, 100°40'22" 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]
Operating rating:98.8 tons [89.8 metric tons]
Inventory rating:60.8 tons [55.3 metric tons]
Sufficiency rating:80.0

Previous Inspections

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
March 201780.0GoodVery GoodVery GoodVery Good-515
March 201580.0GoodVery GoodVery GoodVery Good-515
March 201397.3GoodVery GoodVery GoodVery Good-515
March 201197.8GoodVery GoodExcellentVery Good-395
March 200997.8GoodVery GoodExcellentVery Good-395
March 200798.0GoodVery GoodExcellentVery Good-350
March 200597.8GoodVery GoodExcellentExcellent-390
July 200398.0GoodExcellentExcellentExcellent-345
February 200197.9GoodExcellentExcellentExcellent-380
June 199998.2GoodExcellentExcellentExcellent-300
July 199798.3GoodExcellentExcellentExcellent-270
July 199598.5GoodExcellentExcellentExcellent-230
December 199498.5GoodExcellentExcellentExcellent-230

Element Data

Source: National Bridge Elements dataset, 2016 edition. This feature is experimental.
ElementUnitsQuantity1. Good2. Fair3. Poor4. Serious
Superstructure
Prestressed Concrete Girder/Beamlinear ft.242242000
Deck
Reinforced Concrete Decksq. ft.721720100
Substructure
Reinforced Concrete Pier Walllinear ft.2424000
Steel Abutmentlinear ft.2020000
Steel Protective Coatingsq. ft.2626000
Prestressed Concrete Pileeach1818000
Reinforced Concrete Pier Caplinear ft.9292000
Bearings
Elastomeric Bearingeach2424000
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.123123000