Share:

POTLATCH ROAD over AGATHA CREEK TRESTLE

Map

Coordinates:
+47.26954, -116.07522
47°16'10" N, 116°04'31" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:POTLATCH ROAD over AGATHA CREEK TRESTLE
Structure number:000000000030994
Location:5.7 E. CALDER
Purpose:Carries highway over waterway
Route classification:Minor Collector (Rural) [08]
Length of largest span:14.1 ft. [4.3 m]
Total length:116.1 ft. [35.4 m]
Roadway width between curbs:12.5 ft. [3.8 m]
Deck width edge-to-edge:14.1 ft. [4.3 m]
Owner:County Highway Agency [02]
Year built:1912
Year reconstructed:1991
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:8
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 2016

Good/Fair/Poor Condition:Fair
Status:Posted for load [P]
Average daily traffic:100 [as of 2015]
Truck traffic:5% 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:Meets minimum tolerable limits to be left in place as is [4]
Water adequacy appraisal:Better than present minimum criteria [7]
Roadway alignment appraisal:Equal to present minimum criteria [6]
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]
Operating rating:58.9 tons [53.5 metric tons]
Inventory rating:43.9 tons [39.9 metric tons]
Sufficiency rating:68.9
Recommended work:Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Estimated cost of work:$1,121,000

Previous Inspections

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
August 201668.9FairSatisfactorySatisfactoryFair-100
August 201468.9FairSatisfactorySatisfactoryFair-100
August 201268.9FairSatisfactorySatisfactoryFair-100
August 201068.9FairSatisfactorySatisfactoryFair-100
August 200868.9FairSatisfactorySatisfactoryFair-100
August 200679.9FairSatisfactorySatisfactorySatisfactory-100
August 200479.9FairSatisfactorySatisfactorySatisfactory-100
August 200279.9FairSatisfactorySatisfactorySatisfactory-100
August 200079.9FairSatisfactorySatisfactorySatisfactory-100
August 199879.9FairSatisfactorySatisfactorySatisfactory-100
August 199679.9FairSatisfactorySatisfactorySatisfactory-100
August 199479.9FairSatisfactorySatisfactorySatisfactory-100
August 199279.9FairSatisfactorySatisfactoryGood-100

Element Data

Source: National Bridge Elements dataset, 2016 edition. This feature is experimental.
ElementUnitsQuantity1. Good2. Fair3. Poor4. Serious
Superstructure
Timber Girder/Beamlinear ft.1,4701,23802320
Substructure
Other Material Abutmentlinear ft.54270270
Timber Pileeach4203930
Timber Pier Caplinear ft.9909900
Deck
Timber Decksq. ft.1,5935731,02000
Wearing Surfacessq. ft.1,02623279400