Bridge Type
Main Span(s): Steel [3] Box beam or girders - Multiple [05]
Approach Span(s): Other [00]
Deck: Steel plate (includes orthotropic) [5] with Wearing Surface: Gravel [8]
Bridge Dimensions
Length: 21.3 m = 69.9 ft
Main Spans: 1 at 20.7 m = 67.9 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 8 m = 26.2 ft (2 Lanes) and Out-To-Out: 8.1 m = 26.6 ft for a 8.5 m = 27.9 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A
Location
Unknown [00000]: Johnson County [103], Iowa [19]
Owned by County Highway Agency [02], DOT District: 0
T79N:R05W: Section 11
Condition
Deck: Very Good [8]
Superstructure: Very Good [8]
Substructure: Excellent [9]
Loading
Design: HL93 [A]
Operating: 97.2 metric ton = 106.9 tons (Load and Resistance Factor Rating (LRFR) rating reported by rating factor (RF) method using HL-93 loadings [8])
Inventory: 79.1 metric ton = 87.0 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: Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Road Alignment: Equal to present desirable criteria [8]
Waterway: Equal to present desirable criteria [8] and Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Inspections
Date: August 1999 [899] and Frequency: 24
Future Work
Work Needed:
Bridge Detour: 0.2 km = 0.1 mi
Traffic
ADT: 120 (2018) and Trucks: 0%
Future ADT: 120 (In 2039
)