Bridge Type
Main Span(s): Steel [3] Stringer/Multi-beam or girder [02]
Approach Span(s): Other [00]
Deck: Wood or Timber [8] with Wearing Surface: Wood or Timber [7]
Bridge Dimensions
Length: 35.3 m = 115.8 ft
Main Spans: 3 at 13.1 m = 43.0 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 4.3 m = 14.1 ft (1 Lanes) and Out-To-Out: 4.6 m = 15.1 ft for a 7.3 m = 24.0 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A
Location
Deering [18510]: Northwest Arctic Borough [188], Alaska [02]
Owned by State Highway Agency [01], DOT District: 4
MILE POINT 25.7
Condition
Deck: Fair [5]
Superstructure: Fair [5]
Substructure: Fair [5]
Loading
Design: MS 13.5 / HS 15 [3]
Operating: 68.1 metric ton = 74.9 tons (Load Factor(LF) [1])
Inventory: 32.3 metric ton = 35.5 tons (Load Factor(LF) [1])
Appraisal
Structural: Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Deck Geometry: Equal to present minimum criteria [6]
Road Alignment: Better than present minimum criteria [7]
Waterway: Equal to present desirable criteria [8] and Bridge is scour critical; bridge foundations determined to be unstable. [3]
Inspections
Date: August 2020 [0820] and Frequency: 24
Future Work
Work Needed:
Bridge Detour: 19.9 km = 12.3 mi
Traffic
ADT: 18 (2018) and Trucks: 6%
Future ADT: 40 (In 2035
)
