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S 308 over ROCK CREEK

Carbon County, Montana

Map

Coordinates:
+45.17394, -109.24998
45°10'26" N, 109°14'60" W

Facts

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

Name:	S 308 over ROCK CREEK
Structure number:	S00308000+01001
Location:	RED LODGE
Purpose:	Carries highway over waterway
Route classification:	Major Collector (Rural) `[07]`
Length of largest span:	72.2 ft. `[22.0 m]`
Total length:	72.2 ft. `[22.0 m]`
Roadway width between curbs:	39.4 ft. `[12.0 m]`
Deck width edge-to-edge:	47.2 ft. `[14.4 m]`
Skew angle:	15°
Owner:	State Highway Agency `[01]`
Year built:	2003
Historic significance:	Bridge is not eligible for the National Register of Historic Places `[5]`
Design load:	MS 18 / HS 20 `[5]`
Main span material:	Prestressed concrete `[5]`
Main span design:	Tee beam `[04]`
Deck type:	Concrete Cast-in-Place `[1]`
Wearing surface:	Monolithic Concrete (concurrently placed with structural deck) `[1]`

Latest Available Inspection: November 2015

Good/Fair/Poor Condition:	Good
Status:	Open, no restriction `[A]`
Average daily traffic:	1,340 `[as of 2009]`
Truck traffic:	2% of total traffic
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:	Equal to present minimum criteria `[6]`
Water adequacy appraisal:	Equal to present desirable criteria `[8]`
Roadway alignment appraisal:	Equal to present desirable criteria `[8]`
Channel protection:	There are no noticeable or noteworthy deficiencies which affect the condition of the channel. `[9]`
Scour condition:	Bridge foundations determined to be stable for the assessed or calculated scour condition. `[8]`
Sufficiency rating:	99.9

Previous Inspections

Date	Condition	Deck	Superstructure	Substructure	ADT	Suff. Rating
November 2015	Good	Good	Good	Good	1340	99.9
November 2011	Good	Good	Good	Good	1340	99.9
November 2007	Good	Good	Good	Good	1070	99.9
December 2005	Good	Very Good	Very Good	Very Good	1300	99.9
December 2003	Good	Good	Good	Good	1590	91.3
April 2002	Poor	Fair	Fair	Poor	1590	37.6
April 2000	Poor	Satisfactory	Fair	Poor	1110	38.8
July 1998	Poor	Good	Fair	Poor	1220	38.7
February 1996	Poor	Good	Fair	Poor	1010	38.8
December 1993	Poor	Good	Fair	Poor	830	38.8
March 1992	Poor	Good	Fair	Poor	930	39.3
December 1989	Fair	Good	Fair	Fair	890	52.4

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.	505	505	0	0	0
Deck
Reinforced Concrete Deck	sq. ft.	3,412	3,412	0	0	0
Substructure
Reinforced Concrete Abutment	linear ft.	187	178	9	0	0
Bearings
Fixed Bearing	each	14	14	0	0	0
Steel Protective Coating	sq. ft.	999	999	0	0	0
Bridge Rail
Steel or Aluminum Bridge Rail	linear ft.	144	144	0	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/1318788