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NM-456 over UNNAMED WATERWAY

Map

Coordinates:
+36.91266, -103.66685
36°54'46" N, 103°40'01" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:NM-456 over UNNAMED WATERWAY
Structure number:000000000006266
Location:27.7 M NE OF JCT US-64/87
Purpose:Carries highway over waterway
Route classification:Major Collector (Rural) [07]
Length of largest span:30.8 ft. [9.4 m]
Total length:63.0 ft. [19.2 m]
Roadway width between curbs:31.8 ft. [9.7 m]
Deck width edge-to-edge:33.1 ft. [10.1 m]
Owner:State Highway Agency [01]
Year built:1961
Historic significance:Bridge is possibly eligible for the National Register of Historic Places [3]
Design load:MS 18 / HS 20 [5]
Number of main spans:2
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: April 2018

Good/Fair/Poor Condition:Fair
Status:Open, would be posted or closed except for temporary shoring [D]
Average daily traffic:63 [as of 2017]
Truck traffic:19% of total traffic
Deck condition:Satisfactory [6 out of 9]
Superstructure condition:Satisfactory [6 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:Better than present minimum criteria [7]
Water adequacy appraisal:Equal to present minimum criteria [6]
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 with "unknown" foundation that has not been evaluated for scour. [U]
Sufficiency rating:85.9
Recommended work:Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Estimated cost of work:$300,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
April 2018FairSatisfactorySatisfactoryFair6385.9
April 2016FairSatisfactorySatisfactoryFair6885.8
April 2014FairSatisfactorySatisfactoryFair6885.8
April 2013PoorSatisfactorySatisfactorySerious3952.8
October 2011PoorSatisfactorySatisfactorySerious3952.8
October 2010PoorSatisfactorySatisfactorySerious7752.5
October 2009PoorSatisfactorySatisfactorySerious7752.5
October 2008PoorSatisfactorySatisfactorySerious7754.5
October 2007PoorSatisfactorySatisfactorySerious7954.4
October 2006PoorSatisfactorySatisfactorySerious8154.4
April 2006PoorSatisfactorySatisfactorySerious8354.4
October 2004PoorSatisfactorySatisfactorySerious8554.4
April 2003PoorGoodGoodSerious8754.4
April 2002PoorGoodGoodSerious6254.6
May 2000PoorGoodGoodPoor6271.8
March 1998FairGoodGoodFair8487.8
February 1996FairGoodGoodFair7687.8
June 1994GoodGoodGoodGood4599.0
June 1992GoodGoodGoodGood3099.1
September 1990GoodGoodGoodGood7298.9

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
ElementUnitsQuantity1-Good2-Fair3-Poor4-Serious
Superstructure
Timber Girder/Beamlinear ft.1,35501,35500
Substructure
Timber Columneach28012160
Timber Abutmentlinear ft.161079820
Timber Pier Caplinear ft.1211061500
Deck
Timber Decksq. ft.2,07702,07700
Wearing Surfacessq. ft.2,0772,077000
Bridge Rail
Other Material Bridge Raillinear ft.125012500