Share:

WILLIAMSPORT/PILE over ILIAMNA RIVER

Map

Coordinates:
+59.75838, -153.84638
59°45'30" N, 153°50'47" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:WILLIAMSPORT/PILE over ILIAMNA RIVER
Structure number:2137
Location:MILE POINT 11.0
Purpose:Carries highway over waterway
Route classification:Minor Collector (Rural) [08]
Length of largest span:188.0 ft. [57.3 m]
Total length:190.0 ft. [57.9 m]
Roadway width between curbs:13.8 ft. [4.2 m]
Deck width edge-to-edge:13.8 ft. [4.2 m]
Owner:State Highway Agency [01]
Year built:2003
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:MS 22.5 / HS 25 [9]
Main span material:Steel [3]
Main span design:Truss - Thru [10]
Deck type:Open Grating [3]

Latest Available Inspection: July 2018

Good/Fair/Poor Condition:Good
Status:Open, no restriction [A]
Average daily traffic:19 [as of 2017]
Truck traffic:24% of total traffic
Deck condition:Very Good [8 out of 9]
Superstructure condition:Good [7 out of 9]
Substructure condition:Very Good [8 out of 9]
Structural appraisal:Better than present minimum criteria [7]
Deck geometry appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Water adequacy appraisal:Equal to present minimum criteria [6]
Roadway alignment appraisal:Equal to present minimum criteria [6]
Channel protection:Banks are protected or well vegetated. River control devices such as spur dikes and embankment protection are not required or are in a stable condition. [8]
Pier/abutment protection:Navigation protection not required [1]
Scour condition:Bridge is scour critical; bridge foundations determined to be unstable. [3]
Sufficiency rating:73.8

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
July 2018GoodVery GoodGoodVery Good1973.8
July 2016GoodVery GoodGoodVery Good2076.0
July 2014GoodVery GoodGoodVery Good2076.0
October 2012FairVery GoodSatisfactoryVery Good2076.0
July 2010GoodVery GoodVery GoodVery Good1076.0
May 2008GoodVery GoodVery GoodVery Good1025.0
June 2006GoodVery GoodVery GoodVery Good2025.0
June 2004GoodVery GoodVery GoodVery Good2025.0
December 2003GoodVery GoodVery GoodVery Good2070.8

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
ElementUnitsQuantity1-Good2-Fair3-Poor4-Serious
Superstructure
Steel Trusslinear ft.3803423800
Steel Protective Coatingsq. ft.7,6003,3003,800200300
Steel Floor Beamlinear ft.3703333700
Steel Protective Coatingsq. ft.1,200600300150150
Substructure
Reinforced Concrete Abutmentlinear ft.2020000
Steel Abutmentlinear ft.110011000
Deck
Open Grid Decksq. ft.2,6302,57826260
Steel Protective Coatingsq. ft.5,2605,260000
Bearings
Movable Bearingeach88000
Steel Protective Coatingsq. ft.8080000
Bridge Rail
Steel or Aluminum Bridge Raillinear ft.380380000
Steel Protective Coatingsq. ft.760760000