Bridge Type
Main Span(s): Steel [3] Arch - Thru [12]
Approach Span(s): Steel continuous [4] Girder and floorbeam system [03]
Deck: Concrete Cast-in-Place [1] with Wearing Surface: Monolithic Concrete (concurrently placed with structural deck) [1]
Bridge Dimensions
Length: 780.6 m = 2561.1 ft
Main Spans: 1 at 140.8 m = 462.0 ft
Approach Spans: 12
Skew: 0
Width, Roadway: 12.2 m = 40.0 ft (2 Lanes) and Out-To-Out: 13.4 m = 44.0 ft for a 12.2 m = 40.0 ft approaching roadway.
Vertical Clearance: 7.09 m = 23.3 ft and Navigational Clearance: 18.6 m = 61.0 ft
Location
Unknown [04782]: Clayton County [043], Iowa [19]
Owned by State Highway Agency [01], DOT District: 2
IN MARQUETTE
Condition
Deck: Fair [5]
Superstructure: Good [7]
Substructure: Good [7]
Loading
Design: MS 18 / HS 20 [5]
Operating: 45.7 metric ton = 50.3 tons (Load Factor(LF) [1])
Inventory: 27.8 metric ton = 30.6 tons (Load Factor(LF) [1])
Appraisal
Structural: Equal to present minimum criteria [6]
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 assessed or calculated scour condition. [5]
Inspections
Date: April 1999 [499] and Frequency: 24
Future Work
Work Needed:
Bridge Detour: 10.1 km = 6.3 mi
Traffic
ADT: 10500 (2019) and Trucks: 12%
Future ADT: 10500 (In 2039
)
