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MILL IRON CAMP CRO over BOX ELDER CREEK 006

Carter County, Montana

Map

Coordinates:
+45.83918, -104.16896
45°50'21" N, 104°10'08" W

Facts

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

Name:	MILL IRON CAMP CRO over BOX ELDER CREEK 006
Structure number:	L06100019+00001
Location:	2M SE MILL IRON
Purpose:	Carries highway over waterway
Route classification:	Minor Collector (Rural) `[08]`
Length of largest span:	56.1 ft. `[17.1 m]`
Total length:	226.7 ft. `[69.1 m]`
Roadway width between curbs:	27.9 ft. `[8.5 m]`
Deck width edge-to-edge:	30.8 ft. `[9.4 m]`
Owner:	County Highway Agency `[02]`
Year built:	1965
Historic significance:	Bridge is not eligible for the National Register of Historic Places `[5]`
Design load:	MS 13.5 / HS 15 `[3]`
Number of main spans:	4
Main spans material:	Prestressed concrete `[5]`
Main spans design:	Stringer/Multi-beam or girder `[02]`
Deck type:	Concrete Cast-in-Place `[1]`
Wearing surface:	Monolithic Concrete (concurrently placed with structural deck) `[1]`

Latest Available Inspection: August 2017

Good/Fair/Poor Condition:	Good
Status:	Open, no restriction `[A]`
Average daily traffic:	62 `[as of 2016]`
Deck condition:	Good `[7 out of 9]`
Superstructure condition:	Good `[7 out of 9]`
Substructure condition:	Good `[7 out of 9]`
Structural appraisal:	Equal to present minimum criteria `[6]`
Deck geometry appraisal:	Better than present minimum criteria `[7]`
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 foundations determined to be stable for assessed or calculated scour condition. `[5]`
Sufficiency rating:	84.6

Previous Inspections

Date	Condition	Deck	Superstructure	Substructure	ADT	Suff. Rating
August 2017	Good	Good	Good	Good	62	84.6
August 2015	Good	Good	Very Good	Good	100	84.3
August 2013	Good	Good	Very Good	Good	100	84.3
September 2009	Good	Good	Very Good	Good	100	84.3
September 2007	Good	Good	Very Good	Very Good	100	84.3
February 2004	Good	Good	Very Good	Very Good	100	84.3
November 1999	Good	Good	Very Good	Very Good	100	84.3
February 1998	Good	Good	Very Good	Very Good	100	84.3
November 1995	Good	Very Good	Very Good	Very Good	96	82.2
October 1993	Good	Very Good	Very Good	Very Good	96	82.2
February 1992	Good	Very Good	Very Good	Very Good	252	86.9

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.	879	879	0	0	0
Deck
Reinforced Concrete Deck	sq. ft.	7,029	0	7,029	0	0
Substructure
Reinforced Concrete Column	each	6	2	4	0	0
Reinforced Concrete Abutment	linear ft.	92	92	0	0	0
Reinforced Concrete Pier Cap	linear ft.	92	92	0	0	0
Joints
Assembly without Seal Joint	linear ft.	30	30	0	0	0
Bearings
Movable Bearing	each	8	8	0	0	0
Steel Protective Coating	sq. ft.	8	8	0	0	0
Fixed Bearing	each	16	16	0	0	0
Steel Protective Coating	sq. ft.	16	16	0	0	0
Bridge Rail
Steel or Aluminum Bridge Rail	linear ft.	453	453	0	0	0
Steel Protective Coating	sq. ft.	1,133	1,076	57	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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