US 20 over S Fork Niobrara River
Map
Coordinates:
+42.68800, -104.1912342°41'17" N, 104°11'28" W
Facts
Source: National Bridge Inventory. Information not verified; use at your own risk.
Name: | US 20 over S Fork Niobrara River |
Structure number: | FDY |
Location: | Lusk - Nebr. State Line |
Purpose: | Carries highway over waterway |
Route classification: | Principal Arterial - Other (Rural) [02] |
Length of largest span: | 44.0 ft. [13.4 m] |
Total length: | 118.1 ft. [36.0 m] |
Roadway width between curbs: | 36.1 ft. [11.0 m] |
Deck width edge-to-edge: | 39.0 ft. [11.9 m] |
Skew angle: | 40° |
Owner: | State Highway Agency [01] |
Year built: | 1986 |
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: | 3 |
Main spans material: | Steel continuous [4] |
Main spans design: | Stringer/Multi-beam or girder [02] |
Deck type: | Concrete Cast-in-Place [1] |
Latest Available Inspection: April 2017
Good/Fair/Poor Condition: | Fair |
Status: | Open, no restriction [A] |
Average daily traffic: | 468 [as of 2016] |
Truck traffic: | 26% of total traffic |
Deck condition: | Good [7 out of 9] |
Superstructure condition: | Good [7 out of 9] |
Substructure condition: | Satisfactory [6 out of 9] |
Structural appraisal: | Equal to present minimum criteria [6] |
Deck geometry appraisal: | Better than present minimum criteria [7] |
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] |
Scour condition: | Bridge foundations determined to be stable for the assessed or calculated scour condition. [8] |
Sufficiency rating: | 96.6 |
Previous Inspections
Date | Condition | Deck | Superstructure | Substructure | ADT | Suff. Rating |
---|
April 2017 | Fair | Good | Good | Satisfactory | 468 | 96.6 |
April 2015 | Fair | Good | Good | Satisfactory | 398 | 96.9 |
March 2013 | Fair | Good | Good | Satisfactory | 484 | 96.5 |
February 2011 | Fair | Good | Good | Satisfactory | 479 | 99.8 |
January 2009 | Fair | Good | Good | Satisfactory | 500 | 99.7 |
January 2007 | Fair | Good | Good | Satisfactory | 350 | 99.8 |
February 2005 | Fair | Good | Good | Satisfactory | 590 | 99.7 |
February 2003 | Fair | Good | Good | Satisfactory | 570 | 99.7 |
February 2001 | Fair | Good | Good | Satisfactory | 520 | 99.7 |
February 1999 | Fair | Good | Excellent | Satisfactory | 490 | 97.7 |
February 1997 | Good | Good | Excellent | Good | 450 | 97.8 |
March 1995 | Fair | Satisfactory | Excellent | Good | 450 | 97.8 |
May 1993 | Good | Very Good | Very Good | Very Good | 430 | 97.8 |
March 1991 | Good | Very Good | Very Good | Very Good | 400 | 97.8 |
Element Data
Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
Element | Units | Quantity | 1-Good | 2-Fair | 3-Poor | 4-Serious |
---|
Superstructure |
Steel Girder/Beam | linear ft. | 578 | 558 | 20 | 0 | 0 |
Steel Protective Coating | sq. ft. | 4,260 | 4,240 | 0 | 0 | 20 |
Deck |
Reinforced Concrete Deck | sq. ft. | 4,602 | 4,442 | 152 | 8 | 0 |
Wearing Surfaces | sq. ft. | 4,248 | 4,248 | 0 | 0 | 0 |
Substructure |
Reinforced Concrete Abutment | linear ft. | 101 | 101 | 0 | 0 | 0 |
Steel Pile | each | 10 | 0 | 10 | 0 | 0 |
Steel Protective Coating | sq. ft. | 408 | 168 | 0 | 60 | 180 |
Reinforced Concrete Pier Cap | linear ft. | 95 | 95 | 0 | 0 | 0 |
Joints |
Pourable Joint | linear ft. | 92 | 92 | 0 | 0 | 0 |
Bearings |
Elastomeric Bearing | each | 10 | 10 | 0 | 0 | 0 |
Bridge Rail |
Reinforced Concrete Bridge Rail | linear ft. | 314 | 110 | 204 | 0 | 0 |
Concrete Protective Coating | sq. ft. | 2,052 | 1,539 | 0 | 0 | 513 |