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FRNTAGE ROAD 81020 over COTTONWOOD CREEK 083

Map

Coordinates:
+46.61094, -105.55853
46°36'39" N, 105°33'31" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:FRNTAGE ROAD 81020 over COTTONWOOD CREEK 083
Structure number:L09004003+01001
Location:19M NE MILES CITY
Purpose:Carries highway over waterway
Route classification:Local (Rural) [09]
Length of largest span:19.0 ft. [5.8 m]
Total length:172.6 ft. [52.6 m]
Roadway width between curbs:30.2 ft. [9.2 m]
Deck width edge-to-edge:32.2 ft. [9.8 m]
Owner:State Highway Agency [01]
Year built:1928
Year reconstructed:1948
Historic significance:Bridge is eligible for the National Register of Historic Places [2]
Design load:M 13.5 / H 15 [2]
Number of main spans:9
Main spans material:Wood or timber [7]
Main spans design:Stringer/Multi-beam or girder [02]
Deck type:Wood or Timber [8]
Wearing surface:Bituminous [6]

Latest Available Inspection: October 2016

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:630 [as of 2015]
Deck condition:Good [7 out of 9]
Superstructure condition:Fair [5 out of 9]
Substructure condition:Fair [5 out of 9]
Structural appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
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:Bank is beginning to slump. River control devices and embankment protection have widespread minor damage. There is minor stream bed movement evident. Debris is restricting the channel slightly. [6]
Scour condition:Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Sufficiency rating:69.0
Recommended work:Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Estimated cost of work:$360,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
October 2016FairGoodFairFair63069.0
October 2014FairGoodFairFair10069.3
October 2012PoorGoodPoorFair10053.3
November 2010PoorSatisfactoryPoorFair10054.3
September 2008FairSatisfactoryFairFair10070.3
February 2007FairGoodFairFair10070.3
February 2005PoorGoodFairPoor10054.3
January 2003PoorGoodFairPoor10054.3
January 2001PoorGoodFairPoor10054.3
January 1999PoorGoodFairPoor10054.3
December 1996FairVery GoodFairSatisfactory10068.3
March 1995FairGoodSatisfactoryGood3178.2
December 1992FairVery GoodSatisfactoryVery Good3178.2
February 1991GoodVery GoodGoodVery Good3183.6

Element Data

Source: National Bridge Elements dataset, 2018 edition. This feature is experimental.
ElementUnitsQuantity1-Good2-Fair3-Poor4-Serious
Superstructure
Timber Girder/Beamlinear ft.3,1042,91893930
Substructure
Timber Abutmentlinear ft.8989000
Reinforced Concrete Pile Cap/Footinglinear ft.20200
Timber Pileeach6206020
Timber Pier Caplinear ft.3513024900
Deck
Timber Decksq. ft.5,5225,4675500
Wearing Surfacessq. ft.5,5225,32919300
Bridge Rail
Timber Bridge Raillinear ft.3443281510