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N14 over MISSOURI RIVER

Map

Coordinates:
+42.75114, -97.98745
42°45'04" N, 97°59'15" 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 [3]
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 2016

Good/Fair/Poor Condition:Poor
Status:Open, no restriction [A]
Average daily traffic:745 [as of 2012]
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 the assessed or calculated scour condition. [8]
Operating rating:78.9 tons [71.7 metric tons]
Inventory rating:46.9 tons [42.6 metric tons]
Sufficiency rating:53.0
Recommended work:Widening of existing bridge with deck rehabilitation or replacement. [34]

Previous Inspections

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
October 201653.0PoorGoodVery GoodPoorSD745
October 201453.0PoorGoodVery GoodPoorSD745
October 201288.1GoodVery GoodVery GoodGood-740
November 201089.8GoodVery GoodVery GoodVery Good-555
October 200889.8GoodVery GoodExcellentExcellent-555
October 200688.5GoodExcellentExcellentExcellent-700
March 200488.2GoodExcellentExcellentExcellent-725
August 200290.0GoodExcellentExcellentExcellent-540
March 200090.5GoodExcellentExcellentExcellent-485
March 199890.5GoodExcellentExcellentExcellent-485

Element Data

Source: National Bridge Elements dataset, 2016 edition. This feature is experimental.
ElementUnitsQuantity1. Good2. Fair3. Poor4. Serious
Substructure
Reinforced Concrete Pier Walllinear ft.1919000
Reinforced Concrete Pile Cap/Footinglinear ft.31020
Steel Pileeach1600160