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IRR BIA RTE N12 over TWIN BUTTES WASH

Map

Coordinates:
+35.84089, -109.02278
35°50'27" N, 109°01'22" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:IRR BIA RTE N12 over TWIN BUTTES WASH
Structure number:00000000000N664
Location:5 MI NE OF FORT DEFIANCE
Purpose:Carries highway over waterway
Route classification:Minor Arterial (Rural) [06]
Length of largest span:15.7 ft. [4.8 m]
Total length:59.1 ft. [18.0 m]
Roadway width between curbs:44.3 ft. [13.5 m]
Deck width edge-to-edge:73.2 ft. [22.3 m]
Skew angle:48°
Owner:Bureau of Indian Affairs [62]
Year built:1958
Year reconstructed:1994
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:3
Main spans material:Steel [3]
Main spans design:Culvert [19]
Deck type:Not applicable [N]

Latest Available Inspection: September 2016

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:7,111 [as of 2012]
Truck traffic:10% of total traffic
Structural appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Deck geometry appraisal:Superior to present desirable criteria [9]
Water adequacy appraisal:Meets minimum tolerable limits to be left in place as is [4]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Channel protection:Bank protection is being eroded. River control devices and/or embankment have major damage. Trees and rush restrict the channel. [5]
Culvert condition:Moderate to major deterioration or disintegration, extensive cracking and leaching or spalls on concrete or masonry walls and slabs. Minor settlement or misalignment. Noticeable scouring or erosion at curtain walls, wingwalls or pipes. Metal culverts have significant distortion and deflection in one section, significant corrosion or deep pitting. [5]
Scour condition:Bridge foundations determined to be stable for assessed or calculated scour conditions; field review indicates action is required. [4]
Sufficiency rating:85.0

Previous Inspections

DateConditionCulvert ConditionADTSuff. Rating
September 2016Fair5 out of 10711185.0
October 2014Fair6 out of 10711176.8
January 2012Fair6 out of 10711176.8
January 2010Fair6 out of 10711196.3
November 2007Fair6 out of 10711196.3
August 2004Good7 out of 10711195.3
March 2002Good7 out of 10711195.3
October 1998Good7 out of 10711196.3
December 1996Good7 out of 10711196.3
July 1994Fair5 out of 10545283.6
May 1990Fair6 out of 10513698.0