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US 20 over Niobrara River

Map

Coordinates:
+42.76280, -104.44574
42°45'46" N, 104°26'45" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:US 20 over Niobrara River
Structure number:LJA
Location:Lusk Streets, 3Rd Street
Purpose:Carries highway and pedestrian walkway over waterway
Route classification:Principal Arterial - Other (Rural) [02]
Length of largest span:12.1 ft. [3.7 m]
Total length:53.5 ft. [16.3 m]
Roadway width between curbs:53.5 ft. [16.3 m]
Deck width edge-to-edge:66.3 ft. [20.2 m]
Skew angle:25°
Owner:State Highway Agency [01]
Year built:2003
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:MS 18 / HS 20 [5]
Number of main spans:4
Main spans material:Concrete [1]
Main spans design:Culvert [19]
Deck type:Concrete Cast-in-Place [1]

Latest Available Inspection: April 2017

Good/Fair/Poor Condition:Good
Status:Open, no restriction [A]
Average daily traffic:664 [as of 2016]
Truck traffic:7% of total traffic
Structural appraisal:Better than present minimum criteria [7]
Deck geometry appraisal:Superior to present desirable criteria [9]
Water adequacy appraisal:Equal to present desirable criteria [8]
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]
Culvert condition:Shrinkage cracks, light scaling and insignificant spalling which does not expose reinforcing steel. Insignificant damage caused by drift with no misalignment and not requiring corrective action. Some minor scouring has occured near curtain walls, wingwalls or pipes. Metal culverts have a smooth symmetrical curvature with superficial corrosion and no pitting. [7]
Scour condition:Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Sufficiency rating:95.6

Previous Inspections

DateConditionCulvert ConditionADTSuff. Rating
April 2017Good7 out of 1066495.6
April 2015Good8 out of 10180189.8
April 2013Good8 out of 10180189.8
May 2011Good8 out of 10176981.8
May 2009Good8 out of 10175082.0
April 2007Good8 out of 10178081.7
April 2005Good8 out of 10274080.0
June 2003Good8 out of 10165091.6

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
ElementUnitsQuantity1-Good2-Fair3-Poor4-Serious
Culvert
Reinforced Concrete Culvertlinear ft.2221427550
Joints
Pourable Jointlinear ft.121960250