Bridge Type
Main Span(s): Prestressed concrete [5] Slab [01]
Approach Span(s): Other [00]
Deck: Concrete Cast-in-Place [1] with Wearing Surface: Bituminous [6]
Bridge Dimensions
Length: 25.9 m = 85.0 ft
Main Spans: 3 at 9.5 m = 31.2 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 9.6 m = 31.5 ft (2 Lanes) and Out-To-Out: 9.8 m = 32.2 ft for a 9.6 m = 31.5 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A
Location
Unknown [00000]: Columbia County [009], Oregon [41]
Owned by State Highway Agency [01], DOT District: 1
1.0 MI S VERNONIA
Condition
Deck: Good [7]
Superstructure: Good [7]
Substructure: Fair [5]
Loading
Design: MS 18 / HS 20 [5]
Operating: 43.7 metric ton = 48.1 tons (Load and Resistance Factor Rating (LRFR) rating reported by rating factor (RF) method using HL-93 loadings [8])
Inventory: 33.7 metric ton = 37.1 tons (Load and Resistance Factor Rating (LRFR) rating reported by rating factor (RF) method using HL-93 loadings [8])
Appraisal
Structural: Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Deck Geometry: Meets minimum tolerable limits to be left in place as is [4]
Road Alignment: Equal to present desirable criteria [8]
Waterway: Equal to present minimum criteria [6] and Bridge is scour critical; bridge foundations determined to be unstable. [3]
Inspections
Date: May 2020 [0520] and Frequency: 24
Future Work
Work Needed: Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Bridge Detour: 3 km = 1.9 mi
Traffic
ADT: 3700 (2018) and Trucks: 15%
Future ADT: 3800 (In 2038
)