US 18 over Niobrara River
Map
Coordinates:
+42.76696, -104.4523942°46'01" N, 104°27'09" W
Facts
Source: National Bridge Inventory. Information not verified; use at your own risk.
Name: | US 18 over Niobrara River |
Structure number: | FDE |
Location: | Lusk |
Purpose: | Carries highway and pedestrian walkway over waterway |
Route classification: | Principal Arterial - Other (Rural) [02] |
Length of largest span: | 102.7 ft. [31.3 m] |
Total length: | 108.9 ft. [33.2 m] |
Roadway width between curbs: | 49.9 ft. [15.2 m] |
Deck width edge-to-edge: | 65.0 ft. [19.8 m] |
Skew angle: | 45° |
Owner: | State Highway Agency [01] |
Year built: | 1988 |
Historic significance: | Bridge is not eligible for the National Register of Historic Places [5] |
Design load: | MS 18 / HS 20 [5] |
Main span material: | Steel [3] |
Main span design: | Stringer/Multi-beam or girder [02] |
Deck type: | Concrete Cast-in-Place [1] |
Wearing surface: | Latex Concrete or similar additive [3] |
Latest Available Inspection: March 2018
Good/Fair/Poor Condition: | Fair |
Status: | Open, no restriction [A] |
Average daily traffic: | 4,206 [as of 2017] |
Truck traffic: | 14% 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: | 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: | 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: | 90.7 |
Previous Inspections
Date | Condition | Deck | Superstructure | Substructure | ADT | Suff. Rating |
---|
March 2018 | Fair | Good | Good | Satisfactory | 4206 | 90.7 |
March 2016 | Good | Good | Good | Good | 3095 | 92.6 |
March 2014 | Good | Good | Good | Good | 4505 | 90.2 |
January 2012 | Good | Good | Good | Good | 4452 | 90.3 |
March 2010 | Good | Good | Good | Good | 4519 | 80.0 |
March 2008 | Good | Good | Good | Good | 4470 | 80.0 |
February 2006 | Good | Good | Good | Good | 4400 | 80.0 |
February 2004 | Good | Good | Good | Good | 4970 | 80.0 |
March 2002 | Good | Good | Good | Good | 5100 | 80.0 |
March 2000 | Good | Good | Excellent | Good | 4150 | 80.0 |
February 1998 | Good | Good | Excellent | Good | 4000 | 80.0 |
January 1996 | Fair | Satisfactory | Excellent | Good | 1750 | 80.0 |
February 1994 | Good | Good | Good | Good | 3870 | 80.0 |
March 1992 | Good | Very Good | Very Good | Very Good | 3850 | 80.0 |
April 1990 | Good | Very Good | Very Good | Very Good | 3850 | 80.0 |
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. | 700 | 700 | 0 | 0 | 0 |
Steel Protective Coating | sq. ft. | 9,849 | 9,849 | 0 | 0 | 0 |
Deck |
Reinforced Concrete Deck | sq. ft. | 7,085 | 6,685 | 400 | 0 | 0 |
Wearing Surfaces | sq. ft. | 5,450 | 5,450 | 0 | 0 | 0 |
Substructure |
Reinforced Concrete Abutment | linear ft. | 172 | 160 | 12 | 0 | 0 |
Joints |
Compression Joint | linear ft. | 88 | 0 | 88 | 0 | 0 |
Bearings |
Elastomeric Bearing | each | 14 | 0 | 13 | 1 | 0 |
Bridge Rail |
Reinforced Concrete Bridge Rail | linear ft. | 215 | 195 | 20 | 0 | 0 |