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COTTONWOOD CR RD over S COTTONWOOD CREEK 021

Carter County, Montana

Map

Coordinates:
+45.18528, -104.51356
45°11'07" N, 104°30'49" W

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Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.

Name:	COTTONWOOD CR RD over S COTTONWOOD CREEK 021
Structure number:	L06042014+00001
Location:	15M NW ALZADA
Purpose:	Carries highway over waterway
Route classification:	Local (Rural) `[09]`
Length of largest span:	85.3 ft. `[26.0 m]`
Total length:	85.3 ft. `[26.0 m]`
Roadway width between curbs:	20.0 ft. `[6.1 m]`
Deck width edge-to-edge:	21.0 ft. `[6.4 m]`
Owner:	County Highway Agency `[02]`
Year built:	2014
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:	Corrugated Steel `[6]`
Wearing surface:	Gravel `[8]`

Latest Available Inspection: September 2017

Good/Fair/Poor Condition:	Good
Status:	Open, no restriction `[A]`
Average daily traffic:	100 `[as of 2004]`
Deck condition:	Good `[7 out of 9]`
Superstructure condition:	Good `[7 out of 9]`
Substructure condition:	Good `[7 out of 9]`
Structural appraisal:	Better than present minimum criteria `[7]`
Deck geometry appraisal:	Somewhat better than minimum adequacy to tolerate being left in place as is `[5]`
Water adequacy appraisal:	Somewhat better than minimum adequacy to tolerate being left in place as is `[5]`
Roadway alignment appraisal:	Meets minimum tolerable limits to be left in place as is `[4]`
Channel protection:	Bank is beginning to slump. River control devices and embankment protection have widespread minor damage. There is minor stream bed movement evident. Debris is restricting the channel slightly. `[6]`
Scour condition:	Bridge foundations determined to be stable for the assessed or calculated scour condition. `[8]`
Sufficiency rating:	94.6

Previous Inspections

Date	Condition	Deck	Superstructure	Substructure	ADT	Suff. Rating
September 2017	Good	Good	Good	Good	100	94.6
September 2015	Good	Good	Good	Good	100	94.6
September 2013	Poor	Satisfactory	Serious	Satisfactory	100	24.3
September 2011	Poor	Satisfactory	Poor	Satisfactory	100	28.4
September 2009	Fair	Satisfactory	Fair	Good	100	40.1
September 2007	Fair	Satisfactory	Fair	Good	100	40.1
October 2005	Poor	Satisfactory	Poor	Good	100	23.7
February 2004	Poor	Satisfactory	Poor	Good	100	23.7
November 2001	Poor	Satisfactory	Serious	Good	100	19.1
November 1999	Poor	Satisfactory	Serious	Good	100	19.1
February 1998	Poor	Satisfactory	Serious	Serious	100	19.1
November 1995	Poor	Very Good	Serious	Poor	31	21.4
May 1994	Poor	Very Good	Serious	Poor	31	21.4
February 1992	Poor	Very Good	Serious	Poor	31	21.4
January 1990	Poor	Good	Serious	Serious	31	19.1

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.	768	0	768	0	0
Substructure
Steel Abutment	linear ft.	46	46	0	0	0
Steel Protective Coating	sq. ft.	368	368	0	0	0
Steel Pile	each	10	0	10	0	0
Steel Pier Cap	linear ft.	49	0	49	0	0
Deck
Corrugated or Orthotropic Deck	sq. ft.	1,787	1,787	0	0	0
Wearing Surfaces	sq. ft.	1,787	1,787	0	0	0
Steel Protective Coating	sq. ft.	1,787	1,787	0	0	0

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