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IRR/US-491 over UNNAMED WATERWAY

Map

Coordinates:
+35.87918, -108.69368
35°52'45" N, 108°41'37" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:IRR/US-491 over UNNAMED WATERWAY
Structure number:000000000010079
Location:3.7 MI N OF TOHATCHI
Purpose:Carries highway over waterway
Route classification:Principal Arterial - Other (Rural) [02]
Length of largest span:14.1 ft. [4.3 m]
Total length:30.8 ft. [9.4 m]
Owner:State Highway Agency [01]
Year built:1961
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:Steel [3]
Main spans design:Culvert [19]
Deck type:Not applicable [N]

Latest Available Inspection: March 2018

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:4,616 [as of 2017]
Truck traffic:24% of total traffic
Structural 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]
Culvert condition:Deterioration or initial disintegration, minor chloride contamination, cracking with some leaching, or spalls on concrete or masonry walls and slabs. Local minor scouring at curtain walls, wingwalls or pipes. Metal culverts have a smooth curvature, non-symmetrical shape, significant corrosion or moderate pitting. [6]
Scour condition:Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Sufficiency rating:80.0
Recommended work:Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Estimated cost of work:$339,000

Previous Inspections

DateConditionCulvert ConditionADTSuff. Rating
March 2018Fair6 out of 10461680.0
March 2016Fair6 out of 10299580.0
March 2014Fair6 out of 10299580.0
March 2012Fair6 out of 10277380.0
March 2010Fair6 out of 10411480.0
March 2008Fair6 out of 10411480.0
March 2006Fair6 out of 10964380.0
February 2004Fair6 out of 10609180.0
February 2002Fair6 out of 10387080.0
February 2000Fair6 out of 10359980.0
February 1998Fair6 out of 10346780.0
February 1996Fair6 out of 10352980.0
February 1994Fair6 out of 10317380.0

Element Data

Source: National Bridge Elements dataset, 2018 edition. This feature is experimental.
ElementUnitsQuantity1-Good2-Fair3-Poor4-Serious
Culvert
Steel Culvertlinear ft.2990289100
Steel Protective Coatingsq. ft.10,75310,753000