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US 287 over MILLIGAN CREEK

Broadwater County, Montana

Map

Coordinates:
+45.85651, -111.65435
45°51'23" N, 111°39'16" W

Facts

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

Name:	US 287 over MILLIGAN CREEK
Structure number:	P00013089+01061
Location:	6M SW THREE FORKS
Purpose:	Carries highway over waterway
Route classification:	Minor Arterial (Rural) `[06]`
Length of largest span:	50.9 ft. `[15.5 m]`
Total length:	102.0 ft. `[31.1 m]`
Roadway width between curbs:	37.4 ft. `[11.4 m]`
Deck width edge-to-edge:	39.0 ft. `[11.9 m]`
Owner:	State Highway Agency `[01]`
Year built:	1968
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:	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: December 2017

Good/Fair/Poor Condition:	Good
Status:	Open, no restriction `[A]`
Average daily traffic:	1,580 `[as of 2016]`
Truck traffic:	13% 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:	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:	92.4

Previous Inspections

Date	Condition	Deck	Superstructure	Substructure	ADT	Suff. Rating
December 2017	Good	Good	Good	Good	1580	92.4
January 2014	Good	Very Good	Very Good	Good	1510	93.7
June 2010	Good	Very Good	Very Good	Very Good	1510	93.7
June 2006	Good	Very Good	Very Good	Very Good	1460	93.9
June 2002	Good	Very Good	Very Good	Very Good	1190	94.9
February 1998	Good	Very Good	Very Good	Very Good	1030	95.6
March 1994	Good	Very Good	Very Good	Very Good	850	92.3
April 1992	Good	Very Good	Very Good	Good	810	94.5
February 1990	Good	Good	Very Good	Very Good	544	95.5

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.	509	509	0	0	0
Deck
Reinforced Concrete Deck	sq. ft.	4,004	3,148	817	39	0
Concrete Protective Coating	sq. ft.	4,004	3,187	0	0	817
Substructure
Reinforced Concrete Column	each	2	2	0	0	0
Reinforced Concrete Abutment	linear ft.	102	102	0	0	0
Reinforced Concrete Pier Cap	linear ft.	36	34	2	0	0
Bearings
Fixed Bearing	each	10	10	0	0	0
Steel Protective Coating	sq. ft.	10	10	0	0	0
Bridge Rail
Steel or Aluminum Bridge Rail	linear ft.	203	0	203	0	0
Steel Protective Coating	sq. ft.	400	0	352	40	8

© 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/1317922