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US 20 over S Fork Niobrara River

Niobrara County, Wyoming

Map

Coordinates:
+42.68800, -104.19123
42°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

© Copyright 2012-20, James Baughn
Disclaimer: All data is taken from the National Bridge Inventory and has not been verified.
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