Bridge Type
Main Span(s): Steel [3] Arch - Thru [12]
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: 89.5 m = 293.6 ft
Main Spans: 1 at 87.9 m = 288.4 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 12.8 m = 42.0 ft (3 Lanes) and Out-To-Out: 19.4 m = 63.7 ft for a 12.8 m = 42.0 ft approaching roadway.
Vertical Clearance: 6.35 m = 20.8 ft and Navigational Clearance: 0 = N/A
Location
Unknown [03720]: Hardin County [083], Iowa [19]
Owned by State Highway Agency [01], DOT District: 1
0.1 MI. S JCT. S.R. D20
Condition
Deck: Very Good [8]
Superstructure: Very Good [8]
Substructure: Very Good [8]
Loading
Design: HL93 [A]
Operating: 50.5 metric ton = 55.6 tons (Load and Resistance Factor Rating (LRFR) rating reported by rating factor (RF) method using HL-93 loadings [8])
Inventory: 38.9 metric ton = 42.8 tons (Load and Resistance Factor Rating (LRFR) rating reported by rating factor (RF) method using HL-93 loadings [8])
Appraisal
Structural: Equal to present desirable criteria [8]
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 the assessed or calculated scour condition. [8]
Inspections
Date: October 1999 [1099] and Frequency: 24
Future Work
Work Needed:
Bridge Detour: 0.2 km = 0.1 mi
Traffic
ADT: 9400 (2019) and Trucks: 9%
Future ADT: 9400 (In 2039
)