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US 310 over ROCK CREEK

Carbon County, Montana

Map

Coordinates:
+45.51785, -108.86258
45°31'04" N, 108°51'45" W

Facts

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

Name:	US 310 over ROCK CREEK
Structure number:	P00004042+04541
Location:	ROCKVALE
Purpose:	Carries highway over waterway
Route classification:	Principal Arterial - Other (Rural) `[02]`
Length of largest span:	44.9 ft. `[13.7 m]`
Total length:	137.1 ft. `[41.8 m]`
Roadway width between curbs:	39.0 ft. `[11.9 m]`
Deck width edge-to-edge:	42.3 ft. `[12.9 m]`
Owner:	State Highway Agency `[01]`
Year built:	1934
Year reconstructed:	1968
Historic significance:	Bridge is not eligible for the National Register of Historic Places `[5]`
Design load:	M 13.5 / H 15 `[2]`
Number of main spans:	3
Main spans material:	Concrete `[1]`
Main spans design:	Tee beam `[04]`
Deck type:	Not applicable `[N]`
Wearing surface:	Bituminous `[6]`

Latest Available Inspection: October 2018

Good/Fair/Poor Condition:	Fair
Status:	Open, no restriction `[A]`
Average daily traffic:	4,323 `[as of 2017]`
Truck traffic:	8% of total traffic
Deck condition:	Good `[7 out of 9]`
Superstructure condition:	Satisfactory `[6 out of 9]`
Substructure condition:	Satisfactory `[6 out of 9]`
Structural appraisal:	Equal to present minimum criteria `[6]`
Deck geometry appraisal:	Somewhat better than minimum adequacy to tolerate being left in place as is `[5]`
Water adequacy appraisal:	Equal to present desirable criteria `[8]`
Roadway alignment appraisal:	Equal to present desirable criteria `[8]`
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 is scour critical; bridge foundations determined to be unstable. `[3]`
Sufficiency rating:	88.9

Previous Inspections

Date	Condition	Deck	Superstructure	Substructure	ADT	Suff. Rating
October 2018	Fair	Good	Satisfactory	Satisfactory	4323	88.9
October 2016	Fair	Good	Satisfactory	Satisfactory	4420	57.7
October 2014	Fair	Good	Satisfactory	Satisfactory	4030	57.7
October 2012	Fair	Good	Satisfactory	Satisfactory	4030	57.7
October 2010	Fair	Good	Satisfactory	Satisfactory	4030	57.7
October 2008	Fair	Good	Satisfactory	Good	3950	57.7
October 2006	Fair	Good	Satisfactory	Good	4420	57.7
November 2004	Good	Good	Good	Good	3900	57.7
December 2002	Good	Good	Good	Good	3330	54.7
April 2001	Good	Very Good	Good	Good	3330	54.7
January 1999	Good	Very Good	Good	Good	3030	54.7
December 1996	Fair	Satisfactory	Good	Good	2886	54.7
March 1995	Good	Good	Good	Good	2886	57.5
December 1992	Good	Good	Good	Good	2922	64.6
February 1991	Good	Good	Good	Good	2889	64.6

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
Reinforced Concrete Girder/Beam	linear ft.	958	843	115	0	0
Deck
Reinforced Concrete Top Flange	sq. ft.	5,791	5,617	174	0	0
Wearing Surfaces	sq. ft.	5,791	5,559	232	0	0
Substructure
Reinforced Concrete Column	each	8	0	8	0	0
Reinforced Concrete Abutment	linear ft.	92	38	54	0	0
Reinforced Concrete Pier Cap	linear ft.	79	75	4	0	0
Bearings
Movable Bearing	each	7	0	5	2	0
Steel Protective Coating	sq. ft.	14	0	5	3	6
Fixed Bearing	each	21	0	21	0	0
Steel Protective Coating	sq. ft.	21	0	15	0	6
Bridge Rail
Steel or Aluminum Bridge Rail	linear ft.	276	265	11	0	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/1317771