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COUNTY ROAD 21 over NORTH PLATTE RIVER

This bridge is no longer in the current National Bridge Inventory database, and has likely been demolished or abandoned.

Map

Coordinates:
+42.86799, -106.04923
42°52'05" N, 106°02'57" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:COUNTY ROAD 21 over NORTH PLATTE RIVER
Structure number:DSH
Location:10 MILES W. OF GLENROCK
Purpose:Carries highway over waterway
Route classification:Local (Rural) [09]
Length of largest span:19.0 ft. [5.8 m]
Total length:304.1 ft. [92.7 m]
Roadway width between curbs:14.1 ft. [4.3 m]
Deck width edge-to-edge:16.1 ft. [4.9 m]
Owner:County Highway Agency [02]
Year built:1950
Historic significance:Historical significance is not determinable at this time [4]
Number of main spans:16
Main spans material:Wood or timber [7]
Main spans design:Stringer/Multi-beam or girder [02]
Deck type:Wood or Timber [8]
Wearing surface:Wood or Timber [7]

Latest Available Inspection: August 2011

Good/Fair/Poor Condition:Poor
Status:Posted for load [P]
Average daily traffic:120 [as of 2009]
Deck condition:Satisfactory [6 out of 9]
Superstructure condition:Satisfactory [6 out of 9]
Substructure condition:Serious [3 out of 9]
Structural appraisal:Basically intolerable requiring high priority of corrrective action [3]
Deck geometry appraisal:Basically intolerable requiring high priority of replacement [2]
Water adequacy appraisal:Better than present minimum criteria [7]
Roadway alignment appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
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 with "unknown" foundation that has not been evaluated for scour. [U]
Sufficiency rating:25.1
Recommended work:Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Estimated cost of work:$1,453,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
August 2011PoorSatisfactorySatisfactorySerious12025.1
August 2010PoorSatisfactorySatisfactorySerious12025.1
October 2009PoorSatisfactorySatisfactorySerious12025.1
September 2008PoorSatisfactorySatisfactorySerious12025.1
August 2007PoorSatisfactorySatisfactorySerious12025.1
September 2006PoorSatisfactorySatisfactorySerious2529.7
September 2005PoorSatisfactorySatisfactorySerious2529.7
October 2004PoorSatisfactorySatisfactoryPoor2546.8
September 2003PoorGoodSatisfactoryPoor2546.8
September 2002FairGoodSatisfactoryFair2559.8
September 2001PoorSatisfactoryPoorPoor2546.8
September 2000PoorPoorSeriousPoor2521.8
September 1999PoorFairSeriousPoor2523.8
October 1998PoorFairSeriousPoor2523.8
April 1997PoorFairPoorPoor2523.8
October 1996PoorFairPoorPoor2523.8
September 1995PoorFairPoorPoor2524.4
November 1994PoorGoodSeriousFair2525.5
January 1994PoorGoodSeriousFair2525.5
September 1992PoorGoodSeriousFair2525.5
December 1991FairGoodFairFair2531.5