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GIBSON RD over ROCK CREEK 029

Carbon County, Montana

Map

Coordinates:
+45.52087, -108.83687
45°31'15" N, 108°50'13" W

Facts

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

Name:	GIBSON RD over ROCK CREEK 029
Structure number:	L05304001+07001
Location:	1M E ROCKVALE
Purpose:	Carries highway over waterway
Route classification:	Minor Collector (Rural) `[08]`
Length of largest span:	67.9 ft. `[20.7 m]`
Total length:	139.1 ft. `[42.4 m]`
Roadway width between curbs:	24.0 ft. `[7.3 m]`
Deck width edge-to-edge:	25.9 ft. `[7.9 m]`
Owner:	County Highway Agency `[02]`
Year built:	1979
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:	2
Main spans material:	Prestressed concrete `[5]`
Main spans design:	Tee beam `[04]`
Deck type:	Not applicable `[N]`
Wearing surface:	Monolithic Concrete (concurrently placed with structural deck) `[1]`

Latest Available Inspection: September 2017

Good/Fair/Poor Condition:	Fair
Status:	Open, no restriction `[A]`
Average daily traffic:	100 `[as of 2003]`
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:	Equal to present minimum criteria `[6]`
Water adequacy appraisal:	Equal to present desirable criteria `[8]`
Roadway alignment appraisal:	Equal to present minimum criteria `[6]`
Channel protection:	Bank protection is in need of minor repairs. River control devices and embankment protection have a little minor damage. Banks and/or channel have minor amounts of drift. `[7]`
Scour condition:	Bridge foundations determined to be stable for assessed or calculated scour condition. `[5]`
Sufficiency rating:	98.8

Previous Inspections

Date	Condition	Deck	Superstructure	Substructure	ADT	Suff. Rating
September 2017	Fair	Satisfactory	Good	Satisfactory	100	98.8
September 2015	Fair	Satisfactory	Good	Satisfactory	100	98.8
September 2013	Fair	Satisfactory	Good	Satisfactory	100	99.8
September 2011	Fair	Satisfactory	Good	Satisfactory	100	100.0
September 2009	Fair	Satisfactory	Good	Satisfactory	100	99.0
September 2007	Fair	Good	Satisfactory	Good	100	99.0
November 2005	Fair	Fair	Fair	Good	100	87.0
November 2003	Fair	Good	Satisfactory	Good	100	99.0
February 2002	Fair	Good	Satisfactory	Good	100	100.0
May 2000	Fair	Good	Satisfactory	Good	100	100.0
June 1998	Fair	Good	Satisfactory	Good	100	100.0
February 1994	Fair	Good	Satisfactory	Good	96	98.0
January 1992	Fair	Very Good	Satisfactory	Good	96	98.0
March 1990	Fair	Very Good	Satisfactory	Good	96	98.0

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
Prestressed Concrete Girder/Beam	linear ft.	554	554	0	0	0
Deck
Reinforced Concrete Top Flange	sq. ft.	3,617	3,436	181	0	0
Substructure
Reinforced Concrete Abutment	linear ft.	69	67	2	0	0
Steel Pile	each	6	6	0	0	0
Steel Protective Coating	sq. ft.	30	30	0	0	0
Reinforced Concrete Pier Cap	linear ft.	23	23	0	0	0
Joints
Open Joint	linear ft.	23	0	23	0	0
Bearings
Fixed Bearing	each	16	0	16	0	0
Steel Protective Coating	sq. ft.	16	0	0	16	0
Bridge Rail
Steel or Aluminum Bridge Rail	linear ft.	279	265	14	0	0
Steel Protective Coating	sq. ft.	698	349	0	349	0

© Copyright 2012-20, James Baughn
Disclaimer: All data is taken from the National Bridge Inventory and has not been verified.
This page's URL is http://bridgereports.com/1315737