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N14 over MISSOURI RIVER

Map

Coordinates:
+42.76600, -97.99000
42°45'58" N, 97°59'24" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:N14 over MISSOURI RIVER
Structure number:S014 20330
Location:1.5NE NIOBRARA
Purpose:Carries highway over waterway
Route classification:Minor Arterial (Rural) [06]
Length of largest span:185.0 ft. [56.4 m]
Total length:2953.2 ft. [900.1 m]
Roadway width between curbs:35.4 ft. [10.8 m]
Deck width edge-to-edge:37.7 ft. [11.5 m]
Owner:State Highway Agency [01]
Year built:1996
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:16
Main spans material:Steel continuous [4]
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: October 2018

Good/Fair/Poor Condition:Poor
Status:Open, no restriction [A]
Average daily traffic:830 [as of 2018]
Truck traffic:11% of total traffic
Deck condition:Good [7 out of 9]
Superstructure condition:Very Good [8 out of 9]
Substructure condition:Poor [4 out of 9]
Structural appraisal:Meets minimum tolerable limits to be left in place as is [4]
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 and embankment protection is severely undermined. River control devices have severe damage. Large deposits of debris are in the channel. [4]
Pier/abutment protection:Navigation protection not required [1]
Scour condition:Bridge foundations determined to be stable for assessed or calculated scour conditions; field review indicates action is required. [4]
Sufficiency rating:53.0
Recommended work:Widening of existing bridge with deck rehabilitation or replacement. [34]

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
October 2018PoorGoodVery GoodPoor83053.0
October 2016PoorGoodVery GoodPoor74553.0
October 2014PoorGoodVery GoodPoor74553.0
October 2012GoodVery GoodVery GoodGood74088.1
November 2010GoodVery GoodVery GoodVery Good55589.8
October 2008GoodVery GoodExcellentExcellent55589.8
October 2006GoodExcellentExcellentExcellent70088.5
March 2004GoodExcellentExcellentExcellent72588.2
August 2002GoodExcellentExcellentExcellent54090.0
March 2000GoodExcellentExcellentExcellent48590.5
March 1998GoodExcellentExcellentExcellent48590.5

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
ElementUnitsQuantity1-Good2-Fair3-Poor4-Serious
Superstructure
Steel Girder/Beamlinear ft.11,80811,7208800
Steel Protective Coatingsq. ft.285,349284,9153872621
Deck
Reinforced Concrete Decksq. ft.111,43894,04417,39220
Substructure
Reinforced Concrete Columneach3024600
Reinforced Concrete Abutmentlinear ft.7672310
Reinforced Concrete Pile Cap/Footinglinear ft.20020
Steel Pileeach1010000
Reinforced Concrete Pier Caplinear ft.6115872310
Joints
Pourable Jointlinear ft.7600760
Assembly with Sealeach1903815002
Bearings
Pot Bearingeach80443600
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.5,90405,90400