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N97 over NIOBRARA RIVER

Map 

Coordinates:
+42.80735, -100.67272
42°48'26" N, 100°40'22" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.

Facts 

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