Bridge Type
Main Span(s): Steel [3] Truss - Thru [10]
Approach Span(s): Concrete continuous [2] Tee beam [04]
Deck: Concrete Cast-in-Place [1] with Wearing Surface: Integral Concrete (separate non-modified layer of concrete added to structural deck) [2]
Bridge Dimensions
Length: 269.4 m = 883.9 ft
Main Spans: 2 at 31.1 m = 102.0 ft
Approach Spans: 18
Skew: 26
Width, Roadway: 9.2 m = 30.2 ft (2 Lanes) and Out-To-Out: 11 m = 36.1 ft for a 11.3 m = 37.1 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 7 m = 23.0 ft
Location
Eureka [23042]: Humboldt County [023], California [06]
Owned by State Highway Agency [01], DOT District: 1
01-HUM-101-79.78-EUR
Condition
Deck: Good [7]
Superstructure: Good [7]
Substructure: Good [7]
Loading
Design: M 18 / H 20 [4]
Operating: 29.2 metric ton = 32.1 tons (Load and Resistance Factor Rating (LRFR) rating reported by rating factor (RF) method using HL-93 loadings [8])
Inventory: 22.7 metric ton = 25.0 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: Superior to present desirable criteria [9] and Bridge foundations determined to be stable for assessed or calculated scour condition. [5]
Inspections
Date: January 2021 [0121] and Frequency: 24
Future Work
Work Needed:
Bridge Detour: 0.2 km = 0.1 mi
Traffic
ADT: 17000 (2009) and Trucks: 7%
Future ADT: 26229 (In 2043
)