Bridge Type
Main Span(s): Steel [3] Truss - Deck [09]
Approach Span(s): Steel continuous [4] Stringer/Multi-beam or girder [02]
Deck: Corrugated Steel [6] with Wearing Surface: Bituminous [6]
Bridge Dimensions
Length: 121.9 m = 400.0 ft
Main Spans: 2 at 48.8 m = 160.1 ft
Approach Spans: 9
Skew: 0
Width, Roadway: 8.2 m = 26.9 ft (2 Lanes) and Out-To-Out: 12.2 m = 40.0 ft for a 10.8 m = 35.4 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A
Location
Portland [59000]: Multnomah County [051], Oregon [41]
Owned by City or Municipal Highway Agency [04], DOT District: 2
BALCH GULCH AT FOREST PK
Condition
Deck: Good [7]
Superstructure: Fair [5]
Substructure: Fair [5]
Loading
Design: M 9 / H 10 [1]
Operating: 20.7 metric ton = 22.8 tons (Load and Resistance Factor Rating (LRFR) rating reported by rating factor (RF) method using HL-93 loadings [8])
Inventory: 16.2 metric ton = 17.8 tons (Load and Resistance Factor Rating (LRFR) rating reported by rating factor (RF) method using HL-93 loadings [8])
Appraisal
Structural: Meets minimum tolerable limits to be left in place as is [4]
Deck Geometry: Basically intolerable requiring high priority of corrrective action [3]
Road Alignment: Equal to present minimum criteria [6]
Waterway: N/A [N] and Bridge not over waterway. [N]
Inspections
Date: September 2020 [0920] and Frequency: 24
Future Work
Work Needed: Widening of existing bridge or other major structure without deck rehabilitation or replacement [33]
Bridge Detour: 0 km = 0.0 mi
Traffic
ADT: 4501 (2020) and Trucks: 1%
Future ADT: 4736 (In 2025
)
