Bridge Type
Main Span(s): Steel continuous [4] Truss - Thru [10]
Approach Span(s): Mixed types [20]
Deck: Concrete Cast-in-Place [1] with Wearing Surface: Monolithic Concrete (concurrently placed with structural deck) [1]
Bridge Dimensions
Length: 621.8 m = 2040.1 ft
Main Spans: 3 at 158.5 m = 520.0 ft
Approach Spans: 8
Skew: 0
Width, Roadway: 6.1 m = 20.0 ft (2 Lanes) and Out-To-Out: 6.7 m = 22.0 ft for a 8.5 m = 27.9 ft approaching roadway.
Vertical Clearance: 4.57 m = 15.0 ft and Navigational Clearance: 15.2 m = 49.9 ft
Location
Unknown [00000]: Columbia County [013], Washington [53]
Owned by State Highway Agency [01], DOT District: 5
14.8 N JCT US 12
Condition
Deck: Satisfactory [6]
Superstructure: Satisfactory [6]
Substructure: Satisfactory [6]
Loading
Design: M 18 / H 20 [4]
Operating: 52.6 metric ton = 57.9 tons (Load Factor(LF) [1])
Inventory: 31.7 metric ton = 34.9 tons (Load Factor(LF) [1])
Appraisal
Structural: Equal to present minimum criteria [6]
Deck Geometry: Basically intolerable requiring high priority of corrrective action [3]
Road Alignment: Equal to present desirable criteria [8]
Waterway: Equal to present desirable criteria [8] and Bridge foundations determined to be stable for assessed or calculated scour condition. [5]
Inspections
Date: October 2020 [1020] and Frequency: 24
Future Work
Work Needed: Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Bridge Detour: 15.9 km = 9.9 mi
Traffic
ADT: 430 (2019) and Trucks: 22%
Future ADT: 471 (In 2039
)