Bridge Type
Main Span(s): Prestressed concrete [5] Stringer/Multi-beam or girder [02]
Approach Span(s): Other [00]
Deck: Concrete Cast-in-Place [1] with Wearing Surface: Monolithic Concrete (concurrently placed with structural deck) [1]
Bridge Dimensions
Length: 153.6 m = 504.0 ft
Main Spans: 8 at 16.4 m = 53.8 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 6.6 m = 21.7 ft (2 Lanes) and Out-To-Out: 7.5 m = 24.6 ft for a 6.6 m = 21.7 ft approaching roadway.
Vertical Clearance: 30.17 m = 99.0 ft and Navigational Clearance: 0 = N/A
Location
Little Goose [39755]: Columbia County [013], Washington [53]
Owned by Corps of Engineers (Civil) [70], DOT District: 0
LITTLE GOOSE DAM
Condition
Deck: Good [7]
Superstructure: Good [7]
Substructure: Good [7]
Loading
Design: MS 18 / HS 20 [5]
Operating: 95.6 metric ton = 105.2 tons (Load and Resistance Factor Rating (LRFR) rating reported by rating factor (RF) method using HL-93 loadings [8])
Inventory: 73.9 metric ton = 81.3 tons (Load and Resistance Factor Rating (LRFR) rating reported by rating factor (RF) method using HL-93 loadings [8])
Appraisal
Structural: Better than present minimum criteria [7]
Deck Geometry: Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Road Alignment: Equal to present minimum criteria [6]
Waterway: Superior to present desirable criteria [9] and Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Inspections
Date: October 2018 [1018] and Frequency: 48
Future Work
Work Needed:
Bridge Detour: 10.5 km = 6.5 mi
Traffic
ADT: 50 (2008) and Trucks: 5%
Future ADT: 50 (In 2036
)
