Bridge Type
Main Span(s): Concrete [1] Arch - Deck [11]
Approach Span(s): Concrete continuous [2] Tee beam [04]
Deck: Concrete Cast-in-Place [1] with Wearing Surface: Bituminous [6]
Bridge Dimensions
Length: 100.7 m = 330.4 ft
Main Spans: 1 at 39.6 m = 129.9 ft
Approach Spans: 6
Skew: 0
Width, Roadway: 15.8 m = 51.8 ft (1 Lanes) and Out-To-Out: 6.8 m = 22.3 ft for a 15.8 m = 51.8 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A
Location
Lake Oswego [40550]: Clackamas County [005], Oregon [41]
Owned by State Highway Agency [01], DOT District: 2
1.0 M S OF TERWILLIGER BV
Condition
Deck: Satisfactory [6]
Superstructure: Fair [5]
Substructure: Fair [5]
Loading
Design: M 13.5 / H 15 [2]
Operating: 20.4 metric ton = 22.4 tons (Load and Resistance Factor Rating (LRFR) rating reported by rating factor (RF) method using HL-93 loadings [8])
Inventory: 15.9 metric ton = 17.5 tons (Load and Resistance Factor Rating (LRFR) rating reported by rating factor (RF) method using HL-93 loadings [8])
Appraisal
Structural: Basically intolerable requiring high priority of corrrective action [3]
Deck Geometry: Superior to present desirable criteria [9]
Road Alignment: Equal to present desirable criteria [8]
Waterway: Equal to present desirable criteria [8] and Bridge is scour critical; bridge foundations determined to be unstable. [3]
Inspections
Date: December 1999 [1299] and Frequency: 24
Future Work
Work Needed: Widening of existing bridge or other major structure without deck rehabilitation or replacement [33]
Bridge Detour: 0.2 km = 0.1 mi
Traffic
ADT: 8850 (2018) and Trucks: 1%
Future ADT: 10100 (In 2038
)