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POWERLINE RD over DRAINAGE 025

Cascade County, Montana

Map

Coordinates:
+47.63814, -111.17603
47°38'17" N, 111°10'34" W

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Facts

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

Name:	POWERLINE RD over DRAINAGE 025
Structure number:	L07063002+05001
Location:	9M N GREAT FALLS
Purpose:	Carries highway over waterway
Route classification:	Local (Rural) `[09]`
Length of largest span:	19.0 ft. `[5.8 m]`
Total length:	134.8 ft. `[41.1 m]`
Roadway width between curbs:	19.0 ft. `[5.8 m]`
Deck width edge-to-edge:	20.0 ft. `[6.1 m]`
Owner:	County Highway Agency `[02]`
Year built:	1931
Year reconstructed:	1963
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:	7
Main spans material:	Wood or timber `[7]`
Main spans design:	Stringer/Multi-beam or girder `[02]`
Deck type:	Wood or Timber `[8]`
Wearing surface:	Bituminous `[6]`

Latest Available Inspection: November 2017

Good/Fair/Poor Condition:	Fair
Status:	Open, no restriction `[A]`
Average daily traffic:	100 `[as of 2002]`
Deck condition:	Satisfactory `[6 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:	Meets minimum tolerable limits to be left in place as is `[4]`
Water adequacy appraisal:	Equal to present desirable criteria `[8]`
Roadway alignment appraisal:	Equal to present minimum criteria `[6]`
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 assessed or calculated scour condition. `[5]`
Sufficiency rating:	90.9

Previous Inspections

Date	Condition	Deck	Superstructure	Substructure	ADT	Suff. Rating
November 2017	Fair	Satisfactory	Good	Satisfactory	100	90.9
November 2015	Fair	Satisfactory	Good	Satisfactory	100	91.9
December 2013	Fair	Satisfactory	Good	Satisfactory	100	91.9
January 2012	Fair	Satisfactory	Good	Satisfactory	100	91.9
January 2010	Fair	Satisfactory	Good	Satisfactory	100	91.9
January 2008	Fair	Satisfactory	Good	Satisfactory	100	91.9
January 2006	Fair	Satisfactory	Good	Satisfactory	100	91.9
March 2004	Fair	Good	Good	Satisfactory	100	91.9
March 2002	Fair	Good	Good	Satisfactory	100	91.9
January 2000	Fair	Satisfactory	Good	Satisfactory	100	91.9
February 1998	Good	Good	Very Good	Good	100	91.9
September 1995	Fair	Good	Very Good	Satisfactory	31	90.0
February 1993	Good	Good	Very Good	Good	31	90.0
January 1991	Good	Good	Very Good	Good	31	90.0

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
Timber Girder/Beam	linear ft.	1,621	1,531	90	0	0
Substructure
Timber Column	each	36	8	21	7	0
Reinforced Concrete Pier Wall	linear ft.	39	27	12	0	0
Masonry Abutment	linear ft.	39	36	1	2	0
Timber Pier Cap	linear ft.	157	133	14	10	0
Deck
Timber Deck	sq. ft.	2,702	1,893	809	0	0
Wearing Surfaces	sq. ft.	2,702	1,890	812	0	0
Bridge Rail
Timber Bridge Rail	linear ft.	269	225	40	4	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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