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IRR BIA RTE 12 over HIGHLAND CANAL

Map 

Coordinates:
+41.92584, -116.11193
41°55'33" N, 116°06'43" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.

Facts 

Name:IRR BIA RTE 12 over HIGHLAND CANAL
Structure number:00000000000H309
Location:2.9 MI. SW OF OWYHEE
Purpose:Carries highway over waterway
Route classification:Local (Rural) [09]
Length of largest span:20.7 ft. [6.3 m]
Total length:22.3 ft. [6.8 m]
Roadway width between curbs:14.8 ft. [4.5 m]
Deck width edge-to-edge:26.2 ft. [8.0 m]
Owner:Bureau of Indian Affairs [62]
Year built:1940
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:M 18 / H 20 [4]
Main span material:Wood or timber [7]
Main span design:Stringer/Multi-beam or girder [02]
Deck type:Wood or Timber [8]
Wearing surface:Wood or Timber [7]

Latest Available Inspection: October 2014 

Status:Posted for load [P]
Average daily traffic:20 [as of 2014]
Truck traffic:10% of total traffic
Deck condition:Serious [3 out of 9]
Superstructure condition:Fair [5 out of 9]
Substructure condition:Fair [5 out of 9]
Structural appraisal:Meets minimum tolerable limits to be left in place as is [4]
Deck geometry appraisal:Equal to present minimum criteria [6]
Water adequacy appraisal:Superior to present desirable criteria [9]
Roadway alignment appraisal:Equal to present minimum criteria [6]
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:Scour calculation/evaluation has not been made. [6]
Operating rating:19.1 tons [17.4 metric tons]
Inventory rating:13.8 tons [12.5 metric tons]
Evaluation:Structurally deficient [1]
Sufficiency rating:41.6
Recommended work:Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Estimated cost of work:$150,000

Previous Inspections 

DateSuff. ratingEvaluationDeckSuper.Sub.ADT
October 201441.6Structurally deficientSeriousFairFair20
November 201128.4Structurally deficientSeriousFairFair20
April 201030.4Structurally deficientPoorSatisfactoryFair20
June 200836.6Structurally deficientPoorFairFair50
September 200532.0Not deficientFairSatisfactoryFair50
May 200332.0Not deficientFairGoodFair50
September 200142.1Not deficientFairGoodSatisfactory50
October 199743.1Not deficientVery GoodGoodSatisfactory50
October 199520.9Functionally obsoleteGoodGoodFair49
October 199349.1Functionally obsoleteGoodGoodFair30